Professor Alan Tilbrook
Professorial Research Fellow
Centre for Animal Science
Professorial Research Fellow
School of Veterinary Science
0409 213958
Queensland to lead Australia’s animal welfare research
With the appointment of Professor Alan Tilbrook to lead animal welfare research at QAAFI, Queensland will become the leader of animal welfare research in Australia. Since 2013, Professor Tilbrook has operated as Research Provider Champion and Chair of the Steering Committee for the National Animal Welfare Research, Development and Extension Strategy. He will continue in these roles, while Andrew Spencer, CEO of Australian Pork Ltd, remains as the Research Funder Champion. Professor Tilbrook will also continue to chair the annual National Animal Welfare Research, Development and Extension Forum.
Researcher biography
Professor Alan Tilbrook is nationally and internationally recognised for leading scientific research in animal science and biomedical science (endocrinology, neuroendocrinology, behaviour, stress, and reproduction). He is a global leader in animal welfare science. Professor Tilbrook has an outstanding balanced portfolio in leadership, strategic planning, research, academia, education and government. He is Professor of Animal Welfare in the School of Veterinary Science and has an affiliate appointment in the Centre for Animal Science, Queensland Alliance for Agriculture and Food Innovation at The University of Queensland. Professor Tilbrook is one of three expert members of a Strategy Advisory Group to provide expert strategic advice to the Department of Agriculture, Fisheries and Forestry to assist the development of the renewed Australian Animal Welfare Strategy. He is Chair and Research Champion of the National Primary Industries Animal Welfare Research, Development and Extension Strategy, represents Universities Australia on the Board of the Australian and New Zealand Council for the Care of Animals in Research and Teaching, represents The University of Queensland on the World Organisation for Animal Health and is a member of the Australian Government's Live Export Animal Welfare Advisory Group. Professor Tilbrook established The Animal Welfare Collaborative, a university-facilitated network of individuals, companies, and organisations working together to make evidence-based improvements in animal welfare. This was a collaborative venture with The University of Newcastle, The University of Western Australia and The University of Adelaide. He was a founder, Deputy Director and Co-Director of the Animal Welfare Science Centre, was the Research Chief of Livestock and Farming Systems at the South Australian Research and Development Institute and was Deputy Head of the Department of Physiology at Monash University. He has held numerous national and local leadership roles. Professor Tilbrook's research is conceptually driven with a multidisciplinary and integrative approach. He has developed cutting edge research programs across a range of species including sheep, pigs, poultry, cattle, goats, rodents, horses, buffalo and humans. Professor Tilbrook places a huge emphasis on collaboration, training and professional development.
Publications
Book Chapters
Turner, Anne I., Keating, Charlotte L. and Tilbrook, Alan J. (2011). Sex Differences and the Role of Sex Steroids in Sympatho-Adrenal Medullary System and Hypothalamo-Pituitary Adrenal Axis Responses to Stress. Sex Steroids. (pp. 115-136) Rijeka, Croatia: InTech. doi: 10.5772/25611
Clarke, I. J. and Tilbrook, A. J. (2010). Gonadotropin, neural and hormonal control. Encyclopedia of neuroscience. (pp. 959-965) Amsterdam, Netherlands: Elsevier. doi: 10.1016/B978-008045046-9.01165-7
Tilbrook, A. J. (2007). Neuropeptides, Stress-Related. Encyclopedia of Stress. (pp. 903-908) Elsevier Inc.. doi: 10.1016/B978-012373947-6.00735-2
Journal Articles
Tomas, Katelyn, Savaglia, Jemma, Hewitt, Robert J.E., Plush, Kate J., D'Souza, Darryl N., Butler, Kym L., Hemsworth, Paul H. and Tilbrook, Alan J. (2025). Effects of maternal contact and positive human contact during lactation on pork quality: Positive human contact to piglets during lactation improves pork loin muscle pH. Meat Science, 219 109650, 109650. doi: 10.1016/j.meatsci.2024.109650
Blache, Dominique, Kho, Elise A., Tilbrook, Alan J., Tomas, Katelyn, Plush, Kate, D'Souza, Darryl, Maloney, Shane K. and Cozzolino, Daniel (2024). Near or mid-infra-red spectroscopy of the prefrontal cortex to identify previous stressful experience in an animal. Scientific Reports, 14 (1) 27594. doi: 10.1038/s41598-024-79171-y
Tomas, Katelyn, Savaglia, Jemma, Plush, Kate J., D’Souza, Darryl N., Butler, Kym L., Hemsworth, Paul H. and Tilbrook, Alan J. (2024). Maternal contact and positive human interactions during lactation impact on pig stress resilience post-weaning. Applied Animal Behaviour Science, 276 106326, 106326. doi: 10.1016/j.applanim.2024.106326
Lucas, M.E., Hemsworth, L.M., Butler, K.L., Morrison, R.S., Tilbrook, A.J., Marchant, J.N., Rault, J.-L., Galea, R.Y. and Hemsworth, P.H. (2024). Early human contact and housing for pigs - Part 1: Responses to humans, novelty and isolation. animal, 18 (6) 101164, 101164. doi: 10.1016/j.animal.2024.101164
Lucas, M. E., Hemsworth, L.M., Butler, K. L., Morrison, R. S., Tilbrook, A. J., Marchant, J. N., Rault, J.-L., Galea, R. Y. and Hemsworth, P. H. (2024). Early human contact and housing for pigs - Part 3: Ability to cope with the environment. animal, 18 (6) 101166, 101166. doi: 10.1016/j.animal.2024.101166
Lucas, M. E., Hemsworth, L. M., Butler, K. L., Morrison, R. S., Tilbrook, A. J., Marchant, J. N., Rault, J.-L., Galea, R. Y. and Hemsworth, P. H. (2024). Early human contact and housing for pigs - Part 2: resilience to routine husbandry practices. animal, 18 (6) 101165, 101165. doi: 10.1016/j.animal.2024.101165
Babington, Sarah, Tilbrook, Alan J., Maloney, Shane K., Fernandes, Jill N., Crowley, Tamsyn M., Ding, Luoyang, Fox, Archa H., Zhang, Song, Kho, Elise A., Cozzolino, Daniel, Mahony, Timothy J. and Blache, Dominique (2024). Finding biomarkers of experience in animals. Journal of Animal Science and Biotechnology, 15 (1) 28, 1-20. doi: 10.1186/s40104-023-00989-z
Müller, Maximiliano, Van Liefferinge, Elout, Tilbrook, Alan, van Barneveld, Robert and Roura, Eugeni (2024). Excess dietary Lys reduces feed intake, stimulates jejunal CCK secretion and alters essential and non-essential blood AA profile in pigs. Journal of Animal Science and Biotechnology, 15 (1) 24, 24. doi: 10.1186/s40104-023-00971-9
Tomas, Katelyn, Savaglia, Jemma, Plush, Kate J., D’Souza, Darryl N., Butler, Kym L., Hemsworth, Paul H. and Tilbrook, Alan J. (2024). Maternal contact and positive human interactions during lactation impacts piglet performance and behaviour during lactation. Frontiers in Animal Science, 4 1289518. doi: 10.3389/fanim.2023.1289518
Hemsworth, Paul H., Tilbrook, Alan J., Galea, Rutu Y., Lucas, Megan E., Chidgey, Kirsty L. and Hemsworth, Lauren M. (2023). Review of the influence of farrowing and lactation housing and positive human contact on sow and piglet welfare. Frontiers in Animal Science, 4 1230830, 1-18. doi: 10.3389/fanim.2023.1230830
Müller, Maximiliano, Xu, Chenjing, Navarro, Marta, Masiques, Nuria Elias, Tilbrook, Alan, van Barneveld, Robert and Roura, Eugeni (2023). Leucine (and lysine) increased plasma levels of the satiety hormone CCK, and phenylalanine of the incretin GLP-1 after oral gavages in pigs. Journal of Animal Science, 101 skad175. doi: 10.1093/jas/skad175
Kho, Elise A., Fernandes, Jill N., Tilbrook, Alan J., Fox, Glen P., Sikulu-Lord, Maggy T., Kotze, Andrew C., Beasley, Anne M., James, Peter J., Tolleson, Douglas R. and Cozzolino, Daniel (2023). State of the art and the future of fecal analysis using infrared spectroscopy. Applied Spectroscopy Reviews, 58 (10), 755-785. doi: 10.1080/05704928.2022.2143795
Müller, Maximiliano, Xu, Chenjing, Navarro, Marta, Masiques, Nuria Elias, Tilbrook, Alan, van Barneveld, Robert and Roura, Eugeni (2022). An oral gavage of lysine elicited early satiation while gavages of lysine, leucine, or isoleucine prolonged satiety in pigs. Journal of Animal Science, 100 (12) skac361, 1-8. doi: 10.1093/jas/skac361
Kleemann, D. O., Kelly, J. M., Arney, L. J., Tilbrook, A. J. and Walker, S. K. (2022). Melatonin dose: testicular and testosterone response in Border Leicester rams during spring. Livestock Science, 260 104928, 104928. doi: 10.1016/j.livsci.2022.104928
Hantzopoulou, Georgia-Constantina, Sawyer, Gregory, Tilbrook, Alan J. and Narayan, Edward (2022). Intra-and Inter-sample variation in wool cortisol concentrations of Australian Merino lambs between twice or single shorn ewes. Frontiers in Animal Science, 3 890914. doi: 10.3389/fanim.2022.890914
Narayan, Edward, Sawyer, Gregory, Fox, Dylan, Smith, Ryan and Tilbrook, Alan (2022). Interplay between stress and reproduction: Novel epigenetic markers in response to shearing patterns in Australian Merino sheep (Ovis aries). Frontiers in Veterinary Science, 9 830450, 1-13. doi: 10.3389/fvets.2022.830450
Müller, Maximiliano, Van Liefferinge, Elout, Navarro, Marta, Garcia-Puig, Elisabet, Tilbrook, Alan, van Barneveld, Robert and Roura, Eugeni (2022). CCK and GLP-1 release in response to proteinogenic amino acids using a small intestine ex vivo model in pigs. Journal of Animal Science, 100 (4) skac093. doi: 10.1093/jas/skac093
Engel, Joanna M., Hemsworth, Paul H., Butler, Kym L. and Tilbrook, Alan J. (2022). Measurement of corticosterone in the plasma, eggs and faeces of laying hens. Animal Production Science, 62 (9), 828-835. doi: 10.1071/an21535
Kleemann, D. O., Kelly, J. M., Arney, L. J., Len, J., Tilbrook, A. J. and Walker, S. K. (2021). Sexual behaviour, semen quality and fertility of young Border Leicester rams administered melatonin during spring. Animal Reproduction Science, 231 106804, 106804. doi: 10.1016/j.anireprosci.2021.106804
Hemsworth, Paul H., Tilbrook, Alan J., Campbell, Dana L. M. and Fisher, Andrew D. (2021). Layer hen welfare. Animal Production Science, 61 (10), i-i. doi: 10.1071/ANv61n10_FO
Hayes, Megan E., Hemsworth, Lauren M., Morrison, Rebecca S., Tilbrook, Alan J. and Hemsworth, Paul H. (2021). Positive human contact and housing systems impact the responses of piglets to various stressors. Animals, 11 (6) 1619, 1-19. doi: 10.3390/ani11061619
Narayan, Edward , Barreto, Michelle , Hantzopoulou, Georgia-Constantina and Tilbrook, Alan (2021). A retrospective literature evaluation of the integration of stress physiology indices, animal welfare and climate change assessment of production livestock. Animals, 11 (5) 1287, 1287. doi: 10.3390/ani11051287
Narayan, Edward, McElligott, Alan and Tilbrook, Alan J. (2021). Editorial: Animal Welfare Assessment: Edition 1. Frontiers in Veterinary Science, 8 653422, 653422. doi: 10.3389/fvets.2021.653422
Baptista, Jacqueline, Blache, Dominique, Cox-Witton, Keren, Craddock, Nicola, Dalziel, Toni, de Graaff, Nicolas, Fernandes, Jill, Green, Ronda, Jenkins, Helen, Kahn, Sarah, Kelly, Deborah, Lauber, Mariko, Maloney, Shane K., Peachey, Bridget, Rodger, Ian, Skuse, Jeremy, Tilbrook, Alan J., Walker, Frederick Rohan, Wall, Kelly and Zito, Sarah (2021). Impact of the COVID-19 Pandemic on the welfare of animals in Australia. Frontiers in Veterinary Science, 7 621843, 621843. doi: 10.3389/fvets.2020.621843
Fernandes, Jill N., Hemsworth, Paul H., Coleman, Grahame J. and Tilbrook, Alan J. (2021). Costs and benefits of improving farm animal welfare. Agriculture, 11 (2) 104, 1-14. doi: 10.3390/agriculture11020104
Weaver, S. J., Hynd, P. I., Ralph, C. R., Hocking Edwards, J. E., Burnard, C. L., Narayan, E. and Tilbrook, A. J. (2021). Chronic elevation of plasma cortisol causes differential expression of predominating glucocorticoid in plasma, saliva, fecal, and wool matrices in sheep. Domestic Animal Endocronology, 74 106503, 106503. doi: 10.1016/j.domaniend.2020.106503
Logan, Kathryn J., Leury, Brian J., Russo, Vicki M., Cameron, A.W.N. (Sandy), Tilbrook, Alan J. and Dunshea, Frank R. (2020). An extended photoperiod increases milk yield and decreases ovulatory activity in dairy goats. Animals, 10 (10) 1879, 1879-10. doi: 10.3390/ani10101879
Glatz, P. C. and Tilbrook, A. J. (2020). Welfare issues associated with moulting of laying hens. Animal Production Science, 61 (10), 1006-1012. doi: 10.1071/AN19700
Tilbrook, A. J. and Fisher, A. D. (2020). Stress, health and the welfare of laying hens. Animal Production Science, 61 (10), 931-943. doi: 10.1071/an19666
Barekatain, R., Nattrass, G., Tilbrook, A. J., Chousalkar, K. and Gilani, S. (2019). Reduced protein diet and amino acid concentration alter intestinal barrier function and performance of broiler chickens with or without synthetic glucocorticoid. Poultry Science, 98 (9), 3662-3675. doi: 10.3382/ps/pey563
Fernandes, Jill, Blache, Dominique, Maloney, Shane K., Martin, Graeme B., Venus, Bronwyn, Walker, Frederick Rohan, Head, Brian and Tilbrook, Alan (2019). Addressing animal welfare through collaborative stakeholder networks. Agriculture, 9 (6) 132, 132. doi: 10.3390/agriculture9060132
Tilbrook, A. J. (2019). Understanding Nature’s Way of Regulating Stress will Improve Animal Welfare and Productivity. Journal of Dairy & Veterinary Sciences, 9 (1). doi: 10.19080/jdvs.2019.09.555755
Tilbrook, A.J. (2019). Understanding Nature’s Way of Regulating Stress will Improve Animal Welfare and Productivity. Journal of Dairy & Veterinary Sciences. doi: 10.19080/JDVS.2019.09.555755
Seyfang, Jemma, Ralph, Cameron R., Hebart, Michelle L., Tilbrook, Alan J. and Kirkwood, Roy N. (2018). Anogenital distance reflects the sex ratio of a gilt's birth litter and predicts her reproductive success. Journal of Animal Science, 96 (9), 3856-3862. doi: 10.1093/jas/sky248
Engel, J.M., Widowski, T.M., Tilbrook, A.J., Butler, K.L. and Hemsworth, P.H. (2018). The effects of floor space and nest box access on the physiology and behavior of caged laying hens. Poultry Science, 98 (2), 533-547. doi: 10.3382/ps/pey378
Seyfang, Jemma, Kirkwood, Roy N., Tilbrook, Alan J. and Ralph, Cameron R. (2018). Sex bias of the birth litter affects surge but not tonic LH secretion in gilts. Journal of Animal Science, 96 (6), 2195-2203. doi: 10.1093/jas/sky151
Seyfang, J., Kirkwood, R. N., Tilbrook, A. J. and Ralph, C. R. (2018). The sex ratio of a gilt's birth litter can affect her fitness as a breeding female. Animal Production Science, 58 (9), 1567-1574. doi: 10.1071/AN17192
Tilbrook, A. J. and Ralph, C. R. (2018). Hormones, stress and the welfare of animals. Animal Production Science, 58 (3), 408-415. doi: 10.1071/AN16808
Seyfang, Jemma, Plush, Kate J., Kirkwood, Roy N., Tilbrook, Alan J. and Ralph, Cameron R. (2017). The sex ratio of a litter affects the behaviour of its female pigs until at least 16 weeks of age. Applied Animal Behaviour Science, 200, 45-50. doi: 10.1016/j.applanim.2017.12.001
Tilbrook, A. J. and Ralph, C. R. (2017). Neurophysiological assessment of animal welfare. Animal Production Science, 57 (12), 2370-2375. doi: 10.1071/AN17312
Seyfang, Jemma, Ralph, C. R., Tilbrook, A. J. and Kirkwood, R. N. (2017). Response to gonadotrophins differs for gilts from female- and male-biased litters. Animal Reproduction Science, 182, 134-137. doi: 10.1016/j.anireprosci.2017.05.012
Burnard, C., Ralph, C., Hynd, P., Hocking Edwards, J. and Tilbrook, A. (2017). Hair cortisol and its potential value as a physiological measure of stress response in human and non-human animals. Animal Production Science, 57 (3), 401-414. doi: 10.1071/AN15622
Hemsworth, P. H., Morrison, R. S., Tilbrook, A. J., Butler, K. L., Rice, M. and Moeller, S. J. (2016). Effects of varying floor space on aggressive behavior and cortisol concentrations in group-housed sows. Journal of Animal Science, 94 (11), 4809-4818. doi: 10.2527/jas.2016-0583
Condous, P. C., Plush, K. J., Tilbrook, A. J. and van Wettere, W. H. E. J. (2016). Reducing sow confinement during farrowing and in early lactation increases piglet mortality1. Journal of Animal Science, 94 (7), 3022-3029. doi: 10.2527/jas.2015-0145
Ralph, C. R. and Tilbrook, A. J. (2016). The hypothalamo-pituitary-adrenal (HPA) axis in sheep is attenuated during lactation in response to psychosocial and predator stress. Domestic Animal Endocrinology, 55, 66-73. doi: 10.1016/j.domaniend.2015.11.003
Ralph, C. R. and Tilbrook, A. J. (2016). Invited review: the usefulness of measuring glucocorticoids for assessing animal welfare. Journal of Animal Science, 94 (2), 457-470. doi: 10.2527/jas.2015-9645
Ralph, C. R., Lehman, M. N., Goodman, R. L. and Tilbrook, A. J. (2016). Impact of psychosocial stress on gonadotrophins and sexual behaviour in females: role for cortisol?. Reproduction, 152 (1), R1-R14. doi: 10.1530/REP-15-0604
Ralph, C. R., Hemsworth, P. H., Leury, B. J. and Tilbrook, A. J. (2015). Relationship between plasma and tissue corticosterone in laying hens (Gallus gallus domesticus): implications for stress physiology and animal welfare. Domestic Animal Endocrinology, 50, 72-82. doi: 10.1016/j.domaniend.2014.09.002
Hemsworth, P. H., Mellor, D. J., Cronin, G. M. and Tilbrook, A. J. (2015). Scientific assessment of animal welfare. New Zealand Veterinary Journal, 63 (1), 24-30. doi: 10.1080/00480169.2014.966167
Kleemann, D. O., Kelly, J. M., Arney, L. J., Farley, I. L., Tilbrook, A. J. and Walker, S. K. (2014). Positive effects of melatonin treatment on the reproductive performance of young border leicester rams mated to merino ewes in spring: preliminary observations. Reproduction in Domestic Animals, 49 (6), 894-898. doi: 10.1111/rda.12387
Jayasinghe, S. U., Torres, S. J., Nowson, C. A., Tilbrook, A. J. and Turner, A. I. (2014). Physiological responses to psychological stress: importance of adiposity in men aged 50-70 years. Endocrine Connections, 3 (3), 110-119. doi: 10.1530/EC-14-0042
Jayasinghe, Sisitha U., Torres, Susan J., Nowson, Caryl A., Tilbrook, Alan J. and Turner, Anne I. (2014). Cortisol, alpha amylase, blood pressure and heart rate responses to food intake in men aged 50-70 years: Importance of adiposity. BMC Obesity, 1 (1) 14. doi: 10.1186/s40608-014-0014-4
Hemsworth, P. H., Rice, M., Nash, J., Giri, K., Butler, K. L., Tilbrook, A. J. and Morrison, R. S. (2013). Effects of group size and floor space allowance on grouped sows: Aggression, stress, skin injuries, and reproductive performance. Journal of Animal Science, 91 (10), 4953-4964. doi: 10.2527/jas.2012-5807
Russo, V. M., Cameron, A. W. N., Dunshea, F. R., Tilbrook, A. J. and Leury, B. J. (2013). Artificially extending photoperiod improves milk yield in dairy goats and is most effective in late lactation. Small Ruminant Research, 113 (1), 179-186. doi: 10.1016/j.smallrumres.2013.01.002
Keating, Charlotte, Dawood, Tye, Barton, David A., Lambert, Gavin W. and Tilbrook, Alan J. (2013). Effects of selective serotonin reuptake inhibitor treatment on plasma oxytocin and cortisol in major depressive disorder. BMC Psychiatry, 13 (1) 124, 124.1-124.7. doi: 10.1186/1471-244X-13-124
Hawken, P. A. R., Luckins, N., Tilbrook, A., Fiol, C., Martin, G. B. and Blache, D. (2013). Genetic selection for temperament affects behaviour and the secretion of adrenal and reproductive hormones in sheep subjected to stress. Stress: The International Journal On the Biology of Stress, 16 (1), 130-142. doi: 10.3109/10253890.2012.690114
Straznicky, Nora E., Grima, Mariee T., Sari, Carolina I., Eikelis, Nina, Lambert, Elisabeth A., Nestel, Paul J., Esler, Murray D., Dixon, John B., Chopra, Reena, Tilbrook, Alan J., Schlaich, Markus P. and Lambert, Gavin W. (2012). Neuroadrenergic dysfunction along the diabetes continuum: a comparative study in obese metabolic syndrome subjects. Diabetes, 61 (10), 2506-2516. doi: 10.2337/db12-0138
Keating, Charlotte, Tilbrook, Alan J., Rossell, Susan L., Enticott, Peter G. and Fitzgerald, Paul B. (2012). Reward processing in anorexia nervosa. Neuropsychologia, 50 (5), 567-575. doi: 10.1016/j.neuropsychologia.2012.01.036
Straznicky, N. E., Lambert, E. A., Grima, M. T., Eikelis, N., Nestel, P. J., Dawood, T., Schlaich, M. P., Masuo, K., Chopra, R., Sari, C. I., Dixon, J. B., Tilbrook, A. J. and Lambert, G. W. (2012). The effects of dietary weight loss with or without exercise training on liver enzymes in obese metabolic syndrome subjects. Diabetes, Obesity and Metabolism, 14 (2), 139-148. doi: 10.1111/j.1463-1326.2011.01497.x
Straznicky, Nora E., Eikelis, Nina, Nestel, Paul J., Dixon, John B., Dawood, Tye, Grima, Mariee T., Sari, Carolina I., Schlaich, Markus P., Esler, Murray D., Tilbrook, Alan J., Lambert, Gavin W. and Lambert, Elisabeth A. (2012). Baseline sympathetic nervous system activity predicts dietary weight loss in obese metabolic syndrome subjects. Journal of Clinical Endocrinology and Metabolism, 97 (2), 605-613. doi: 10.1210/jc.2011-2320
Papargiris, M. M., Rivalland, E. T. A., Hemsworth, P. H., Morrissey, A. D. and Tilbrook, A. J. (2011). Acute and chronic stress-like levels of cortisol inhibit the oestradiol stimulus to induce sexual receptivity but have no effect on sexual attractivity or proceptivity in female sheep. Hormones and Behavior, 60 (4), 336-345. doi: 10.1016/j.yhbeh.2011.06.008
Lambert, Elisabeth, Lambert, Gavin, Ika-Sari, Carolina, Dawood, Tye, Lee, Katie, Chopra, Reena, Straznicky, Nora, Eikelis, Nina, Drew, Sara, Tilbrook, Alan, Dixon, John, Esler, Murray and Schlaich, Markus P. (2011). Ghrelin modulates sympathetic nervous system activity and stress response in lean and overweight men. Hypertension, 58 (1), 43-50. doi: 10.1161/HYPERTENSIONAHA.111.171025
Spencer, Sarah J. and Tilbrook, Alan (2011). The glucocorticoid contribution to obesity. Stress: The International Journal On the Biology of Stress, 14 (3), 233-246. doi: 10.3109/10253890.2010.534831
Keating, Charlotte, Tilbrook, Alan and Kulkarni, Jayashri (2011). Oestrogen: an overlooked mediator in the neuropsychopharmacology of treatment response?. International Journal of Neuropsychopharmacology, 14 (4), 553-566. doi: 10.1017/S1461145710000982
Papargiris, M. M., Rivalland, E. T. A., Clarke, I. J., Smith, J. T., Pereira, A. and Tilbrook, A. J. (2011). Evidence that RF-amide related peptide-3 is not a mediator of the inhibitory effects of psychosocial stress on gonadotrophin secretion in ovariectomised ewes. Journal of Neuroendocrinology, 23 (3), 208-215. doi: 10.1111/j.1365-2826.2010.02094.x
Dunshea, F. R., Cronin, G. M., Barnett, J. L., Hemsworth, P. H., Hennessy, D. P., Campbell, R. G., Luxford, B., Smits, R. J., Tilbrook, A. J., King, R. H. and McCauley, I. (2011). Immunisation against gonadotrophin-releasing hormone (GnRH) increases growth and reduces variability in group-housed boars. Animal Production Science, 51 (8), 695-701. doi: 10.1071/AN11021
Turner, A. I., Rivalland, E. T. A., Clarke, I. J. and Tilbrook, A. J. (2010). Stressor specificity of sex differences in hypothalamo-pituitary-adrenal axis activity: cortisol responses to exercise, endotoxin, wetting, and isolation/restraint stress in gonadectomized male and female sheep. Endocrinology, 151 (9), 4324-4331. doi: 10.1210/en.2010-0234
Turner, A. I., Rivalland, E. T A., Clarke, I. J. and Tilbrook, A. J. (2010). Stressor specificity of sex differences in hypothalamo-pituitary-adrenal axis activity: cortisol responses to exercise, endotoxin, wetting, and isolation/restraint stress in gonadectomized male and female sheep. Journal of Clinical Endocrinology and Metabolism, 95 (8), 4081-4081. doi: 10.1210/jcem.95.8.9987
Wagenmaker, Elizabeth R., Breen, Kellie M., Oakley, Amy E., Tilbrook, Alan J. and Karsch, Fred J. (2010). The estrous cycle of the ewe is resistant to disruption by repeated, acute psychosocial stress. Biology of Reproduction, 82 (6), 1206-1215. doi: 10.1095/biolreprod.109.078774
Sari, Ika P., Rao, Alexandra, Smith, Jeremy T., Tilbrook, Alan J. and Clarke, Iain J. (2009). Effect of RF-amide-related peptide-3 on luteinizing hormone and follicle-stimulating hormone synthesis and secretion in ovine pituitary gonadotropes. Endocrinology, 150 (12), 5549-5556. doi: 10.1210/en.2009-0775
Spencer, Sarah J. and Tilbrook, Alan (2009). Neonatal overfeeding alters adult anxiety and stress responsiveness. Psychoneuroendocrinology, 34 (8), 1133-1143. doi: 10.1016/j.psyneuen.2009.02.013
Oakley, Amy E., Breen, Kellie M., Tilbrook, Alan J., Wagenmaker, Elizabeth R. and Karsch, Fred J. (2009). Role of estradiol in cortisol-induced reduction of luteinizing hormone pulse frequency. Endocrinology, 150 (6), 2775-2782. doi: 10.1210/en.2008-1754
Pierce, B. N., Clarke, I. J., Turner, A. I., Rivalland, E. T. A. and Tilbrook, A. J. (2009). Cortisol disrupts the ability of estradiol-17β to induce the LH surge in ovariectomized ewes. Domestic Animal Endocrinology, 36 (4), 202-208. doi: 10.1016/j.domaniend.2008.11.003
Wagenmaker, Elizabeth R., Breen, Kellie M., Oakley, Amy E., Pierce, Bree N., Tilbrook, Alan J., Turner, Anne I. and Karsch, Fred J. (2009). Cortisol interferes with the estradiol-induced surge of luteinizing hormone in the ewe. Biology of Reproduction, 80 (3), 458-463. doi: 10.1095/biolreprod.108.074252
Wagenmaker, Elizabeth R., Breen, Kellie M., Oakley, Amy E., Tilbrook, Alan J. and Karsch, Fred J. (2009). Psychosocial stress inhibits amplitude of gonadotropin-releasing hormone pulses Independent of cortisol action on the type II glucocorticoid receptor. Endocrinology, 150 (2), 762-769. doi: 10.1210/en.2008-0757
Oakley, Amy E., Breen, Kellie M., Clarke, Iain J., Karsch, Fred J., Wagenmaker, Elizabeth R. and Tilbrook, Alan J. (2009). Cortisol reduces gonadotropin-releasing hormone pulse frequency in follicular phase ewes: Influence of ovarian steroids. Endocrinology, 150 (1), 341-349. doi: 10.1210/en.2008-0587
Pierce, B. N., Stackpole, C. A., Breen, K. M., Clarke, I. J., Karsch, F. J., Rivalland, E. T. A., Turner, A. I., Caddy, D. J., Wagenmaker, E. R., Oakley, A. E. and Tilbrook, A. J. (2009). Estradiol enables cortisol to act directly upon the pituitary to suppress pituitary responsiveness to GnRH in sheep. Neuroendocrinology, 89 (1), 86-97. doi: 10.1159/000151543
Smith, Jeremy T., Coolen, Lique M., Kriegsfeld, Lance J., Sari, Ika P., Jaafarzadehshirazi, Mohammad R., Maltby, Matthew, Bateman, Katherine, Goodman, Robert L., Tilbrook, Alan J., Ubuka, Takayoshi, Bentley, George E., Clarke, Iain J. and Lehman, Michael N. (2008). Variation in kisspeptin and RFamide-related peptide (RFRP) expression and terminal connections to gonadotropin-releasing hormone neurons in the brain: A novel medium for seasonal breeding in the sheep. Endocrinology, 149 (11), 5770-5782. doi: 10.1210/en.2008-0581
Clarke, Iain J., Sari, Ika P., Qi, Yue, Smith, Jeremy T., Parkington, Helena C., Ubuka, Takayoshi, Iqbal, Javed, Li, Qun, Tilbrook, Alan, Morgan, Kevin, Pawson, Adam J., Tsutsui, Kazuyoshi, Millar, Robert P. and Bentley, George E. (2008). Potent action of RFamide-related peptide-3 on pituitary gonadotropes indicative of a hypophysiotropic role in the negative regulation of gonadotropin secretion. Endocrinology, 149 (11), 5811-5821. doi: 10.1210/en.2008-0575
Morrissey, A. D., Cameron, A. W. N. and Tilbrook, A. J. (2008). Artificial lighting during winter increases milk yield in dairy ewes. Journal of Dairy Science, 91 (11), 4238-4243. doi: 10.3168/jds.2007-0918
Pierce, B. N., Hemsworth, P. H., Rivalland, E. T. A., Wagenmaker, E. R., Morrissey, A. D., Papargiris, M. M., Clarke, I. J., Karsch, F. J., Turner, A. I. and Tilbrook, A. J. (2008). Psychosocial stress suppresses attractivity, proceptivity and pulsatile LH secretion in the ewe. Hormones and Behavior, 54 (3), 424-434. doi: 10.1016/j.yhbeh.2008.04.005
Tilbrook, Alan J., Rivalland, Elizabeth A. T., Turner, Anne I., Lambert, Gavin W. and Clarke, Iain J. (2008). Responses of the hypothalamopituitary adrenal axis and the sympathoadrenal system to isolation/restraint stress in sheep of different adiposity. Neuroendocrinology, 87 (4), 193-205. doi: 10.1159/000117576
Scott, Christopher J., Clarke, Iain J. and Tilbrook, Alan J. (2008). The effect of testosterone and season on prodynorphin messenger RNA expression in the preoptic area-hypothalamus of the ram. Domestic Animal Endocrinology, 34 (4), 440-450. doi: 10.1016/j.domaniend.2008.01.001
Morrissey, A. D., Cameron, A. W. N. and Tilbrook, A. J. (2008). Pregnancy does not affect commercial milk yield in dairy ewes managed to lamb at 9-month intervals. Small Ruminant Research, 76 (3), 211-214. doi: 10.1016/j.smallrumres.2007.12.021
Morrissey, A. D., Cameron, A. W. N., Caddy, D. J. and Tilbrook, A. J. (2007). Predicting milk yield in sheep used for dairying in Australia. Journal of Dairy Science, 90 (11), 5056-5061. doi: 10.3168/jds.2007-0336
Hemsworth, P. H. and Tilbrook, A. J. (2007). Sexual behavior of male pigs. Hormones and Behavior, 52 (1), 39-44. doi: 10.1016/j.yhbeh.2007.03.013
Breen, Kellie M., Oakley, Amy E., Pytiak, Andrew V., Tilbrook, Alan J., Wagenmaker, Elizabeth R. and Karsch, Fred J. (2007). Does cortisol acting via the type II glucocorticoid receptor mediate suppression of pulsatile luteinizing hormone secretion in response to psychosocial stress?. Endocrinology, 148 (4), 1882-1890. doi: 10.1210/en.2006-0973
Rivalland, E. T. A., Clarke, I. J., Turner, A. I., Pompolo, S. and Tilbrook, J. (2007). Isolation and restraint stress results in differential activation of corticotrophin-releasing hormone and arginine vasopressin neurons in sheep. Neuroscience, 145 (3), 1048-1058. doi: 10.1016/j.neuroscience.2006.12.045
Rivalland, Elizabeth T. A., Tilbrook, Alan J., Turner, Anne I., Iqbal, Javed, Pompolo, Sueli and Clarke, Iain J. (2006). Projections to the preoptic area from the paraventricular nucleus, arcuate nucleus and the bed nucleus of the stria terminalis are unlikely to be involved in stress-induced suppression of GnRH secretion in sheep. Neuroendocrinology, 84 (1), 1-13. doi: 10.1159/000096372
Tilbrook, A. J. and Clarke, I. J. (2006). Neuroendocrine mechanisms of innate states of attenuated responsiveness of the hypothalamo-pituitary adrenal axis to stress. Frontiers in Neuroendocrinology, 27 (3), 285-307. doi: 10.1016/j.yfrne.2006.06.002
Turner, AI, Hosking, BJ, Parr, RA and Tilbrook, AJ (2006). A sex difference in the cortisol response to tail docking an ACTH develops between 1 and 8 weeks of age in lambs. Journal of Endocrinology, 188 (3), 443-449. doi: 10.1677/joe.1.06328
Stackpole, Catherine A., Clarke, Iain J., Breen, Kellie M., Turner, Anne I., Karsch, Fred J. and Tilbrook, Alan J. (2006). Sex difference in the suppressive effect of cortisol on pulsatile secretion of luteinizing hormone in sheep. Endocrinology, 147 (12), 5921-5931. doi: 10.1210/en.2006-0667
Tilbrook, AJ, Turner, AI, Ibbott, MD and Clarke, IJ (2006). Activation of the hypothalamo-pituitary-adrenal axis by isolation and restraint stress during lactation in ewes: Effect of the presence of the lamb and suckling. Endocrinology, 147 (7), 3501-3509. doi: 10.1210/en.2005-1632
Turner, A. I. and Tilbrook, A. J. (2006). Stress, cortisol and reproduction in female pigs. Society of Reproduction and Fertility supplement, 62, 191-203.
Clarke, IJ, Backholer, K and Tilbrook, AJ (2005). Y2 receptor-selective agonist delays the estrogen-induced luteinizing hormone surge in ovariectomized ewes, but Y1-receptor-selective agonist stimulates voluntary food intake. Endocrinology, 146 (2), 769-775. doi: 10.1210/en.2004-1085
Rivalland, ETA, Iqbal, J, Clarke, IJ, Turner, AI and Tilbrook, AJ (2005). Co-localization and distribution of corticotrophin-releasing hormone, arginine vasopressin and enkephalin in the paraventricular nucleus of sheep: A sex comparison. Neuroscience, 132 (3), 755-766. doi: 10.1016/j.neuroscience.2005.01.045
Scott, CJ, Clarke, IJ, Rao, A and Tilbrook, AJ (2004). Sex differences in the distribution and abundance of androgen receptor mRNA-containing cells in the preoptic area and hypothalamus of the ram and ewe. Journal of Neuroendocrinology, 16 (12), 956-963. doi: 10.1111/j.1365-2826.2005.01261.x
Breen, KM, Stackpole, CA, Clarke, IJ, Pytiak, AV, Tilbrook, AJ, Wagenmaker, ER, Young, EA and Karsch, FJ (2004). Does the type II glucocorticoid receptor mediate cortisol-induced suppression in pituitary responsiveness to gonadotropin-releasing hormone?. Endocrinology, 145 (6), 2739-2746. doi: 10.1210/en.2004-0123
Keenan, DM, Alexander, S, Irvine, CHG, Clarke, I, Scott, C, Turner, A, Tilbrook, AJ, Canny, BJ and Veldhuis, JD (2004). Reconstruction of in vivo time-evolving neuroendocrine dose-response properties unveils admixed deterministic and stochastic elements. Proceedings of the National Academy of Sciences of the United States of America, 101 (17), 6740-6745. doi: 10.1073/pnas.0300619101
Henry, BA, Goding, JW, Tilbrook, AJ, Dunshea, FR, Blache, D and Clarke, IJ (2004). Leptin-mediated effects of undernutrition or fasting on luteinizing hormone and growth hormone secretion in ovariectomized ewes depend on the duration of metabolic perturbation. Journal of Neuroendocrinology, 16 (3), 244-255. doi: 10.1111/j.0953-8194.2004.01157.x
Scott, Christopher J., Mariani, Michael, Clarke, Iain J. and Tilbrook, Alan J. (2003). Effect of Testosterone and Season on Proenkephalin Messenger RNA Expression in the Preoptic Area of the Hypothalamus in the Ram. Biology of Reproduction, 69 (6), 2015-2021. doi: 10.1095/biolreprod.103.016956
Estrada, KM, Pompolo, S, Morris, MJ, Tilbrook, AJ and Clarke, IJ (2003). Neuropeptide Y (NPY) delays the oestrogen-induced luteinizing hormone (LH) surge in the ovariectomized ewe: Further evidence that NPY has a predominant negative effect on LH secretion in the ewe. Journal of Neuroendocrinology, 15 (11), 1011-1020. doi: 10.1046/j.1365-2826.2003.01087.x
Stackpole, CA, Turner, AL, Clarke, IJ, Lambert, GW and Tilbrook, AJ (2003). Seasonal differences in the effect of isolation and restraint stress on the luteinizing hormone response to gonadotropin-releasing hormone in hypothalamopituitary disconnected, gonadectomized rams and ewes. Biology of Reproduction, 69 (4), 1158-1164. doi: 10.1095/biolreprod.103.016428
Scott, CJ, Clarke, LJ and Tilbrook, AJ (2003). Neuronal inputs from the hypothalamus and brain stem to the medial preoptic area of the ram: Neurochemical correlates and comparison to the ewe. Biology of Reproduction, 68 (4), 1119-1133. doi: 10.1095/biolreprod.102.010595
Turner, AI, Canny, BJ, Hobbs, RJ, Bond, JD, Clarke, IJ and Tilbrook, AJ (2002). Influence of sex and gonadal status of sheep on cortisol secretion in response to ACTH and on cortisol and LH secretion in response to stress: Importance of different stressors. Journal of Endocrinology, 173 (1), 113-122. doi: 10.1677/joe.0.1730113
Turner, AI, Rivalland, ETA, Clarke, IJ, Lambert, GW, Morris, MJ and Tilbrook, AJ (2002). Noradrenaline, but not neuropeptide Y, is elevated in cerebrospinal fluid from the third cerebral ventricle following audiovisual stress in gonadectomised rams and ewes. Neuroendocrinology, 76 (6), 373-380. doi: 10.1159/000067584
Turner, AI, Hemsworth, PH and Tilbrook, AJ (2002). Susceptibility of reproduction in female pigs to impairment by stress and the role of the hypothalamo-pituitary-adrenal axis. Reproduction Fertility and Development, 14 (6), 377-391. doi: 10.1071/RD02012
Tilbrook, A. J., Turner, A. I. and Clarke, I. J. (2002). Stress and reproduction: Central mechanisms and sex differences in non-rodent species. Stress-The International Journal On the Biology of Stress, 5 (2), 83-100. doi: 10.1080/10253890290027912
Henry, BA, Rao, A, Ikenasio, BA, Mountjoy, KG, Tilbrook, AJ and Clarke, IJ (2001). Differential expression of cocaine- and amphetamine-regulated transcript and agouti related-protein in chronically food-restricted sheep. Brain Research, 918 (1-2), 40-50. doi: 10.1016/S0006-8993(01)02918-3
Henry, BA, Rao, A, Tilbrook, AJ and Clarke, IJ (2001). Chronic food-restriction alters the expression of somatostatin and growth hormone-releasing hormone in the ovariectomised ewe. Journal of Endocrinology, 170 (1), R1-R5. doi: 10.1677/joe.0.170R001
Hughan, SC, Loose, JM, Caddy, DJ, Canny, BJ, Tilbrook, AJ and Young, IR (2001). Combined xylazine and ketamine as an analgesic regimen in sheep. Australian Veterinary Journal, 79 (3), 207-211. doi: 10.1111/j.1751-0813.2001.tb14582.x
Tilbrook, AJ, de Kretser, DM and Clarke, IJ (2001). Influence of the degree of stimulation of the pituitary by gonadotropin-releasing hormone on the action of inhibin and testosterone to suppress the secretion of the gonadotropins in rams. Biology of Reproduction, 64 (2), 473-481. doi: 10.1095/biolreprod64.2.473
Turner, AI, Tilbrook, AJ, Clarke, IJ and Scott, CJ (2001). Progesterone and testosterone in combination act in the hypothalamus of castrated rams to regulate the secretion of LH. Journal of Endocrinology, 169 (2), 291-298. doi: 10.1677/joe.0.1690291
Scott, CJ, Pereira, AM, Tilbrook, AJ, Rawson, JA and Clarke, IJ (2001). Changes in preoptic and hypothalamic levels of progesterone receptor mRNA across the oestrous cycle of the ewe. Journal of Neuroendocrinology, 13 (5), 401-406. doi: 10.1046/j.1365-2826.2001.00641.x
Henry, BA, Goding, JW, Tilbrook, AJ, Dunshea, FR and Clarke, IJ (2001). Intracerebroventricular infusion of leptin elevates the secretion of luteinising hormone without affecting food intake in long-term food-restricted sheep, but increases growth hormone irrespective of bodyweight. Journal of Endocrinology, 168 (1), 67-77. doi: 10.1677/joe.0.1680067
Clarke, IJ, Tilbrook, AJ, Turner, AI, Doughton, BW and Goding, JW (2001). Sex, fat and the tilt of the earth: Effects of sex and season on the feeding response to centrally administered leptin in sheep. Endocrinology, 142 (6), 2725-2728. doi: 10.1210/en.142.6.2725
Tilbrook, A. J. and Clarke, I. J. (2001). Negative feedback regulation of the secretion and actions of gonadotropin-releasing hormone in males. Biology of Reproduction, 64 (3), 735-742. doi: 10.1095/biolreprod64.3.735
Tilbrook, AJ, Turner, AI and Clarke, IJ (2000). Effects of stress on reproduction in non-rodent mammals: the role of glucocorticoids and sex differences. Reviews of Reproduction, 5 (2), 105-113. doi: 10.1530/ror.0.0050105
Hutson, GD, Ambrose, TJ, Barnett, JL and Tilbrook, AJ (2000). Development of a behavioural test of sensory responsiveness in the growing pig. Applied Animal Behaviour Science, 66 (3), 187-202. doi: 10.1016/S0168-1591(99)00084-2
Scott, CJ, Tilbrook, AJ, Simmons, DM, Rawson, JA, Chu, S, Fuller, PJ, Ing, NH and Clarke, IJ (2000). The distribution of cells containing estrogen receptor- α (ERα) and ERβ messenger ribonucleic acid in the preoptic area and hypothalamus of the sheep: Comparison of males and females. Endocrinology, 141 (8), 2951-2962. doi: 10.1210/en.141.8.2951
Henry, BA, Tilbrook, AJ, Dunshea, FR, Rao, A, Blache, D, Martin, GB and Clarke, IJ (2000). Long-term alterations in adiposity affect the expression of melanin-concentrating hormone and enkephalin but not proopiomelanocortin in the hypothalamus of ovariectomized ewes. Endocrinology, 141 (4), 1506-1514. doi: 10.1210/en.141.4.1506
Turner, AI, Hemsworth, PH, Canny, BJ and Tilbrook, AJ (1999). Inhibition of the secretion of LH in ovariectomised pigs by sustained but not repeated acute elevation of cortisol in the absence but not the presence of oestradiol. Journal of Endocrinology, 163 (3), 477-486. doi: 10.1677/joe.0.1630477
Tilbrook, AJ, Canny, BJ, Serapiglia, MD, Ambrose, TJ and Clarke, IJ (1999). Suppression of the secretion of luteinizing hormone due to isolation/restraint stress in gonadectomised rams and ewes is influenced by sex steroids. Journal of Endocrinology, 160 (3), 469-481. doi: 10.1677/joe.0.1600469
Henry, BA, Goding, JW, Alexander, WS, Tilbrook, AJ, Canny, BJ, Dunshea, F, Rao, A, Mansell, A and Clarke, IJ (1999). Central administration of leptin to ovariectomized ewes inhibits food intake without affecting the secretion of hormones from the pituitary gland: Evidence for a dissociation of effects on appetite and neuroendocrine function. Endocrinology, 140 (3), 1175-1182. doi: 10.1210/en.140.3.1175
Turner, AI, Hemsworth, PH, Canny, BJ and Tilbrook, AJ (1999). Sustained but not repeated acute elevation of cortisol impaired the luteinizing hormone surge, estrus, and ovulation in gilts. Biology of Reproduction, 61 (3), 614-620. doi: 10.1095/biolreprod61.3.614
Tilbrook, AJ, de Kretser, DM and Clarke, IJ (1999). Seasonal changes in the negative feedback regulation of the secretion of the gonadotrophins by testosterone and inhibin in rams. Journal of Endocrinology, 160 (1), 155-167. doi: 10.1677/joe.0.1600155
Tilbrook, AJ, Canny, BJ, Stewart, BJ, Serapiglia, MD and Clarke, IJ (1999). Central administration of corticotrophin releasing hormone but not arginine vasopressin stimulates the secretion of luteinizing hormone in rams in the presence and absence of testosterone. Journal of Endocrinology, 162 (2), 301-311. doi: 10.1677/joe.0.1620301
Canny, BJ, O'Farrell, KA, Clarke, IJ and Tilbrook, AJ (1999). The influence of sex and gonadectomy on the hypothalamo-pituitary- adrenal axis of the sheep. Journal of Endocrinology, 162 (2), 215-225. doi: 10.1677/joe.0.1620215
Flint, S., Knight, S. and Tilbrook, A. (1998). Application of high-resolution sequence stratigraphy to Northwest Hutton field, northern North Sea: Implications for management of a mature Brent Group field. AAPG Bulletin, 82 (7), 1416-1436.
Turner, AI, Hemsworth, PH, Hughes, PE and Tilbrook, AJ (1998). Repeated acute activation of the hypothalamo-pituitary adrenal axis prior to and during estrus did not affect reproductive performance in gilts. Biology of Reproduction, 58 (6), 1458-1462. doi: 10.1095/biolreprod58.6.1458
Canny, BJ, O'Farrell, KA, Clarke, IJ and Tilbrook, AJ (1998). Angiotensin II- and phorbol ester-induced steroidogenesis by ovine adrenocortical cells: Effect of sex and the gonadal status of the donor animal. Clinical and Experimental Pharmacology and Physiology, 25 (6), 401-404. doi: 10.1111/j.1440-1681.1998.tb02222.x
Turner, AI, Hemsworth, PH, Hughes, PE, Canny, BJ and Tilbrook, AJ (1998). The effect of repeated boar exposure on cortisol secretion and reproduction in gilts. Animal Reproduction Science, 51 (2), 143-154. doi: 10.1016/S0378-4320(98)00057-8
Dunshea, FR, Leury, BJ, Tilbrook, AJ and King, RH (1998). Ractopamine increases glucose turnover without affecting lipogenesis in the pig. Australian Journal of Agricultural Research, 49 (7), 1147-1152. doi: 10.1071/A98001
Phillips, DJ, Hedger, MP, McFarlane, JR, Klein, R, Clarke, IJ, Tilbrook, AJ, Nash, AD and deKretser, DM (1996). Follistatin concentrations in male sheep increase following sham castration/castration or injection of interleukin-1 beta. Journal of Endocrinology, 151 (1), 119-124. doi: 10.1677/joe.0.1510119
Turner, AI, Hemsworth, PH and Tilbrook, AJ (1996). The sexual motivation of boars housed adjacent to ovariectomised gilts did not affect the efficiency of detecting hormonally induced oestrus using the back pressure test. Applied Animal Behaviour Science, 49 (4), 343-351. doi: 10.1016/0168-1591(96)01063-5
Tilbrook, AJ, deKretser, DM, Dunshea, FR, Klein, R, Robertson, DM, Clarke, IJ and Maddocks, S (1996). The testis is not the major source of circulating follistatin in the ram. Journal of Endocrinology, 149 (1), 55-63. doi: 10.1677/joe.0.1490055
Tilbrook, AJ, Clarke, IJ and Dekretser, DM (1995). Human recombinant follistatin-288 suppresses plasma concentrations of follicle-stimulating hormone but is not a significant regulator of luteinizing hormone in castrated rams. Biology of Reproduction, 53 (6), 1353-1358. doi: 10.1095/biolreprod53.6.1353
Pomares, CC, Galloway, DB, Holmes, Jhg, Clarke, IJ and Tilbrook, AJ (1995). Lupin and cowpea supplements for growth, wool production, and reproduction in rams. Australian Journal of Experimental Agriculture, 35 (4), 447-452. doi: 10.1071/EA9950447
Tilbrook, AJ and Clarke, IJ (1995). Negative Feedback-Regulation of the Secretion and Actions of Gnrh in Male Ruminants. Journal of Reproduction and Fertility, 49, 297-306.
Tilbrook, AJ, Dekretser, DM and Clarke, IJ (1993). Human Recombinant Inhibin-A Suppresses Plasma Follicle-Stimulating-Hormone to Intact Levels But Has No Effect On Luteinizing-Hormone in Castrated Rams. Biology of Reproduction, 49 (4), 779-788. doi: 10.1095/biolreprod49.4.779
Clarke, IJ, Fletcher, TP, Pomares, CC, Holmes, Jhg, Dunshea, F, Thomas, GB, Tilbrook, AJ, Walton, PE and Galloway, DB (1993). Effect of High-Protein Feed Supplements On Concentrations of Growth-Hormone (Gh), Insulin-Like Growth Factor-I (Igf-I) and Igf-Binding Protein-3 in Plasma and On the Amounts of Gh and Messenger-Rna for Gh in the Pituitary-Glands of Adult Rams. Journal of Endocrinology, 138 (3), 421-427. doi: 10.1677/joe.0.1380421
Tilbrook, AJ, Dekretser, DM and Clarke, IJ (1993). Human Recombinant Inhibin-A and Testosterone Act Directly At the Pituitary to Suppress Plasma-Concentrations of Fsh in Castrated Rams. Journal of Endocrinology, 138 (2), 181-189. doi: 10.1677/joe.0.1380181
Tilbrook, AJ, Galloway, DB, Williams, AH and Clarke, IJ (1993). Treatment of Young Rams with an Agonist of GnRH Delays Reproductive Development. Hormones and Behavior, 27 (1), 5-28. doi: 10.1006/hbeh.1993.1002
Tilbrook, AJ, Johnson, RJ, Eason, PJ, Walsh, JD, Trigg, TE and Clarke, IJ (1992). Short-Term Reduction in Egg Production in Laying Hens Treated with an Agonist of GNRH. British Poultry Science, 33 (3), 621-638. doi: 10.1080/00071669208417501
Tilbrook, AJ, Dekretser, DM and Clarke, IJ (1992). A role for inhibin in the regulation of the secretion of follicle stimulating hormone in male domestic animals. Domestic Animal Endocrinology, 9 (4), 243-260. doi: 10.1016/0739-7240(92)90013-N
Clarke, IJ and Tilbrook, AJ (1992). Influence of non-photoperiodic environmental factors on reproduction in domestic animals. Animal Reproduction Science, 28 (1-4), 219-228. doi: 10.1016/0378-4320(92)90108-P
Tilbrook, AJ and Clarke, IJ (1992). Evidence that Dopaminergic Neurons are not Involved in the Negative Feedback Effect of Testosterone on Luteinizing Hormone in Rams in the Non‐Breeding Season. Journal of Neuroendocrinology, 4 (3), 365-374. doi: 10.1111/j.1365-2826.1992.tb00181.x
Hemsworth, PH, Price, EO and Tilbrook, AJ (1992). Influence of the sexual motivation of the boar on the sexual partner preferences of oestrous gilts. Applied Animal Behaviour Science, 33 (2-3), 209-215. doi: 10.1016/S0168-1591(05)80008-5
Tilbrook, AJ, Dekretser, DM, Cummins, JT and Clarke, IJ (1991). The Negative Feedback Effects of Testicular-Steroids Are Predominantly At the Hypothalamus in the Ram. Endocrinology, 129 (6), 3080-3092. doi: 10.1210/endo-129-6-3080
Tilbrook, AJ, Dekretser, DM and Clarke, IJ (1991). Studies On the Testicular Source of Inhibin and its Route of Secretion in Rams - Failure of the Leydig-Cell to Secrete Inhibin in Response to a Human Chorionic-Gonadotropin Lh Stimulus. Journal of Endocrinology, 130 (1), 107-114. doi: 10.1677/joe.0.1300107
Clarke, IJ, Tilbrook, AJ, Galloway, DB, Earl, CR, Findlay, JK and Dekretser, DM (1991). Inhibin in Rams. Journal of Reproduction and Fertility, 43, 163-170.
Tilbrook, AJ and Hemsworth, PH (1990). Detection of oestrus in gilts housed adjacent or opposite boars or exposed to exogenous boar stimuli. Applied Animal Behaviour Science, 28 (3), 233-245. doi: 10.1016/0168-1591(90)90102-J
Tilbrook, AJ, Hemsworth, PH, Topp, JS and Cameron, Awn (1990). Parallel changes in the proceptive and receptive behaviour of the ewe. Applied Animal Behaviour Science, 27 (1-2), 73-92. doi: 10.1016/0168-1591(90)90008-2
Parr, RA, Davis, IF and Tilbrook, AJ (1989). Effect of Shearing On Estrus and Ovulation in Sheep. Journal of Agricultural Science, 113 (3), 411-412. doi: 10.1017/S0021859600070143
Tilbrook, AJ, Hemsworth, PH, Barnett, JL and Skinner, A (1989). An investigation of the social behaviour and response to humans of young cattle. Applied Animal Behaviour Science, 23 (1-2), 107-116. doi: 10.1016/0168-1591(89)90011-7
Tilbrook, AJ and Cameron, Awn (1989). Ram mating preferences for woolly rather than recently shorn ewes. Applied Animal Behaviour Science, 24 (4), 301-312. doi: 10.1016/0168-1591(89)90058-0
Hemsworth, PH, Barnett, JL, Tilbrook, AJ and Hansen, C (1989). The effects of handling by humans at calving and during milking on the behaviour and milk cortisol concentrations of primiparous dairy cows. Applied Animal Behaviour Science, 22 (3-4), 313-326. doi: 10.1016/0168-1591(89)90026-9
Hemsworth, PH, Winfield, CG, Tilbrook, AJ, Hansen, C and Barnett, JL (1988). Habituation to boar stimuli: Possible mechanism responsible for the reduced detection rate of oestrous gilts housed adjacent to boars. Applied Animal Behaviour Science, 19 (3-4), 255-264. doi: 10.1016/0168-1591(88)90006-8
Tilbrook, AJ and Lindsay, DR (1987). Differences in the sexual "attractiveness" of oestrous ewes to rams. Applied Animal Behaviour Science, 17 (1-2), 129-138. doi: 10.1016/0168-1591(87)90015-3
Cameron, Awn, Tilbrook, AJ, Lindsay, DR, Fairnie, IJ and Keogh, EJ (1987). The number of spermatozoa required by naturally mated ewes and the ability of rams to meet these requirements. Animal Reproduction Science, 13 (2), 91-104. doi: 10.1016/0378-4320(87)90122-9
Tilbrook, AJ (1987). The influence of factors associated with oestrus on the sexual "attractiveness" of ewes to rams. Applied Animal Behaviour Science, 17 (1-2), 117-128. doi: 10.1016/0168-1591(87)90014-1
Tilbrook, AJ, Cameron, Awn and Lindsay, DR (1987). The influence of ram mating preferences and social interaction between rams on the proportion of ewes mated at field joining. Applied Animal Behaviour Science, 18 (2), 173-184. doi: 10.1016/0168-1591(87)90191-2
Tilbrook, AJ (1987). Physical and behavioural factors affecting the sexual "attractiveness" of the ewe. Applied Animal Behaviour Science, 17 (1-2), 109-115. doi: 10.1016/0168-1591(87)90013-X
Cameron, Awn, Tilbrook, AJ, Lindsay, DR, Keogh, EJ and Fairnie, IJ (1986). The effect of testicular weight and insemination technique on fertility of sheep. Animal Reproduction Science, 12 (3), 189-194. doi: 10.1016/0378-4320(86)90039-4
Tilbrook, AJ and Pearce, DT (1986). Pattern of Loss of Spermatozoa From the Vagina of the Ewe. Australian Journal of Biological Sciences, 39 (3), 295-303.
Tilbrook, AJ and Pearce, DT (1986). Time Required for Spermatozoa to Remain in the Vagina of the Ewe to Ensure Conception. Australian Journal of Biological Sciences, 39 (3), 305-309.
Tilbrook, A. J. and Pearce, D. T. (1986). Pattern of loss of spermatozoa from the vagina of the ewe. Australian Journal of Biological Sciences, 39 (3), 295-304. doi: 10.1071/BI9860295
Tilbrook, A. J. and Pearce, D. T. (1986). Time required for spermatozoa to remain in the vagina of the Ewe to ensure conception. Australian Journal of Biological Sciences, 39 (3), 305-310. doi: 10.1071/BI9860305
Conference Papers
Abdallah, A., Kumar, A., Navarro, M., Müller, M., Tilbrook, A.J., Plush, K.J., D'Souza, D.N. and Roura, E. (2023). Stocking density increases the incidence of tail biting in post-weaned pigs. Manipulating Pig Production XIX, Brisbane, QLD Australia, 13-16 November 2023. Amsterdam, Netherlands: Elsevier. doi: 10.1016/j.anscip.2023.09.015
Tomas, K., Savaglia, J., Plush, K.J., D'Souza, D.N., Butler, K.L., Hemsworth, P.H. and Tilbrook, A.J. (2023). Early life maternal contact has long-term impacts on pig growth. Manipulating Pig Production XIX, Brisbane, QLD Australia, 13-16 November 2023. Amsterdam, Netherlands: Elsevier. doi: 10.1016/j.anscip.2023.09.005
Walters, K. L., Dunshea, F. R., Tilbrook, A. J. and Leury, B. J. (2023). Plasma cortisol response to adrenocorticotropin hormone is negativelym related to previous wool growth and is greater in twin than single sheep. ISRP 2009: XIth International Symposium on Ruminant Physiology, Clermont-Ferrand, France, 6-9 September 2009. Leiden, Netherlands: Brill.
Hantzopoulou, Georgia-Constantina, Sawyer, Gregory, Tilbrook, Alan and Narayan, Edward (2022). Variation in wool cortisol concentrations of australian merino lambs between twice or single shorn ewes. QAAFI Student Symposium 2022 – A Future for Sustainable Food Systems 2.0, Brisbane, QLD Australia, 30 September 2022.
Narayan, Edward, Hantzopoulou, Georgia, Sawyer, Gregory and Tilbrook, Alan (2022). Wool provides key insights into the physiological sensitivity of Merino sheep to environment and management intervention. Australasian Association of Animal Sciences, Cairns, QLD, Australia, 5-7 July 2022.
Müller, M., Tilbrook, A. J., van Barneveld, R. J., Navarro, M. and Roura, E. (2021). An oral gavage of leucine decreases feed intake by triggering early satiation and prolonging satiety in young pigs. 18th Biennial Conference of the Australasian Pig Science Association (APSA), Brisbane, Australia, 15-18 November 2021. Amsterdam, Netherlands: Elsevier . doi: 10.1016/j.anscip.2021.09.114
Savaglia, J., Tomas, K., Plush, K.J., Zemitis, J.E., D'Souza, D.N., Butler, K.L., Hemsworth, P.H. and Tilbrook, A.J. (2021). Reduced maternal contact and positive human contact has a limited effect on 18-day old piglet behaviour in a novel arena test. Manipulating Pig Production XVIII, Brisbane, QLD Australia, 15–18 November 2021. Amsterdam, Netherlands: Elsevier. doi: 10.1016/j.anscip.2021.09.146
Tomas, K., Savaglia, J., Plush, K.J., D'Souza, D.N., Fernandes, J.N., Butler, K.L., Hemsworth, P.H. and Tilbrook, A.J. (2021). Maternal contact and human interaction does little to change piglet performance during lactation. Manipulating Pig Production XVIII, Brisbane, QLD Australia, 15–18 November 2021. Amsterdam, Netherlands: Elsevier. doi: 10.1016/j.anscip.2021.09.145
Narayan, E,, Fox, D., Sawyer, G. and Tilbrook, A. (2021). Understanding maternal Merino sheep resilience to stress using wool hormone monitoring, epigenetics and Smart tags. 33rd AAAS Biennial Conference , Perth, 1-3 February 2021.
Narayan, Edward, Fox, Dylan, Sawyer, Gregory and Tilbrook, Alan (2020). Tracking stress remotely via wool cortisol and SMART tags: shearing early in
pregnancy reduces stress and improves productivity of Merino sheep . QAAFI’s Annual Research Meeting 2020, Australia, 17 November 2020. Brisbane, QLD Australia: Queensland Alliance for Agriculture and Food Innovation.
Seyfang, J., Kirkwood, R. N., Tilbrook, A. J. and Ralph, C. R. (2017). The pre-ovulatory luteinising hormone surge is affected by the sex ratio of a gilt's birth litter. Manipulating Pig Production XVI, Melbourne, Australia, November 2017. Clayton, VIC Australia: CSIRO Publishing. doi: 10.1071/ANv57n12Ab016
Ralph, C. R., Kirkwood, R. N. and Tilbrook, A. J. (2017). A single intravenous injection of Kisspeptin evokes an increase in luteinising hormone in 15- and 18-week-old gilts. 2017 Australasian Pig Science Association: Manipulating Pig Production XVI, Melbourne, VIC, Australia, 19 - 22 November 2017. C S I R O Publishing: Clayton, VIC, Australia. doi: 10.1071/ANv57n12Ab067
Vandyk, R. and Tilbrook, A. (2011). The Art of Sexual Science: Grommets, Girly-Girls, and Grandpas ... and Everything in Between. WILEY-BLACKWELL.
Vandyk, R. and Tilbrook, A. (2011). Female Sexual Precocity: a Current and Future Pursuit. WILEY-BLACKWELL.
Papargiris, Melissa M., Hemsworth, Paul H., Rivalland, Elizabeth T. A., Morrissey, Adam D. and Tilbrook, Alan J. (2010). Cortisol Inhibits Sexual Receptivity, but Has No Effect on Attractivity or Proceptivity in Ovariectomized Ewes Treated with Different Doses of Estradiol Benzoate.. 43rd Annual Meeting of the Society-for-the-Study-of-Reproduction, Milwaukee Wi, Jul 31-Aug 03, 2010. SOC STUDY REPRODUCTION.
Keating, C., Dawood, T., Lambert, G., Barton, D., Kulkarni, J. and Tilbrook, A. (2010). Oxytocin levels predict HPA-axis response to selective serotonin reuptake inhibitors (SSRIs) in patients with major depression. 27th CINP Congress Meeting 2010, Hong Kong Peoples R China, Jun 06-10, 2010. CAMBRIDGE UNIV PRESS.
Pierce, Bree, Clarke, Lain, Breen, Kellie, Karsch, Fred, Rivalland, Elizabeth, Caddy, David and Tilbrook, Alan (2007). Estradiol enables the direct pituitary actions of cortisol to suppress gonadotropin-releasing hormone (GNRH)-induced lh secretion in ovariectomized hypothalamo-pituitary disconnected (HPD) ewes during the breeding season.. 40th Annual Meeting of the Society-for-the-Study-of-Reproduction, San Antonio Tx, Jul 21-25, 2007. SOC STUDY REPRODUCTION.
Oakley, Amy, Tilbrook, Alan, Wagen-Maker, Elizabeth and Karsch, Fred (2007). Gonadal steroids of the follicular phase enable cortisol to act centrally and inhibit GNRH pulse frequency.. 40th Annual Meeting of the Society-for-the-Study-of-Reproduction, San Antonio Tx, Jul 21-25, 2007. SOC STUDY REPRODUCTION.
Tilbrook, A. J., Rivalland, E. T. A., Turner, A. I., Pompolo, S. and Clarke, I. J. (2006). Isolation/restraint stress in sheep activates projections to the preoptic area arising from the paraventricular nucleus but not those arising from the bed nucleus of the stria terminalis or the arcuate nucleus. 6th International Congress of Neuroendocrinology, Pittsburgh Pa, Jun 19-22, 2006. ACADEMIC PRESS INC ELSEVIER SCIENCE. doi: 10.1016/j.yfrne.2006.03.081
Oakley, Amy E., Breen, Kellie M., Tilbrook, Alan J., Wagenmaker, Elizabeth R. and Karsch, Fred J. (2006). Differing modes of cortisol-induced suppression of pulsatile LH secretion in ovariectomized vs. ovary-intact ewes.. 39th Annual Meeting of the Society-for-the-Study-of-Reproduction, Omaha Ne, Jul 29-Aug 01, 2006. SOC STUDY REPRODUCTION.
Turner, AI, Hemsworth, PH and Tilbrook, AJ (2005). Susceptibility of reproduction in female pigs to impairment by stress or elevation of cortisol. 5th International Conference on Farm Animal Endocrinology, Budapest Hungary, Jul 04-06, 2004. doi: 10.1016/j.domaniend.2005.02.031
Wagenmaker, ER, Breen, KM, Clarke, IJ, Oakley, AE, Tilbrook, AJ, Turner, AI and Karsch, FJ (2005). Cortisol delays the estradiol-induced LH surge: Is this dependent on prior ovarian steroid exposure?. 38th Annual Meeting of the Society-for-the-Study-of-Reproduction, Quebec City Canada, Jul 24-27, 2005. SOC STUDY REPRODUCTION.
Stackpole, CA, Turner, AI, Clarke, IJ and Tilbrook, AJ (2003). Cortisol does not suppress the luteinizing hormone (LH) response to gonadotropin-releasing hormone (GnRH) in hypothalamo-pituitary disconnected rams and ewes.. 36th Annual Meeting of the Society-for-the-Study-of-Reproduction, Cincinnati Ohio, Jul 19-22, 2003. SOC STUDY REPRODUCTION.
Scott, CJ, Tilbrook, AJ, Rawson, JA and Clarke, IJ (2000). Gonadal steroid receptors in the regulation of GnRH secretion in farm animals. 14th International Congress on Animal Reproduction - Research and Practice II, Stockholm Sweden, Jul 02-06, 2000. doi: 10.1016/S0378-4320(00)00103-2
Turner, AI, Maddocks, S, Dunshea, FR, de Kretser, DM, Phillips, DJ, Clarke, IJ and Tilbrook, AJ (2000). Influence of photoperiod on spermatic and jugular vein concentrations of total follistatin in rams.. SOC STUDY REPRODUCTION.
Tilbrook, AJ, deKretser, DM and Clarke, IJ (1997). Negative feedback regulation of FSH secretion by inhibin in pre-pubertal rams. MADISON: SOC STUDY REPRODUCTION.
Turner, AI, Hemsworth, PH, Hughes, PE and Tilbrook, AJ (1996). Introduction of gilts to boars elevated plasma cortisol but did not affect reproduction.. MADISON: SOC STUDY REPRODUCTION.
Dunshea, FR, Tilbrook, AJ, Leury, BJ and King, RH (1996). Dietary ractopamine increases glucose turnover but not in vivo adipose tissue lipogenesis in the pig. 20th Annual Scientific Meeting of the Nutrition-Society-of-Australia, Sydney Australia, Sep-Oct -, 1996. BENTLEY: NUTRITION SOC AUSTRALIA.
Robertson, D. M., Tilbrook, A., Clarke, I. and deKretser, D. M. (1995). Role of inhibin and related proteins in male reproduction. VIIIth World Congress on Human Reproduction/IVth World Conference on Fallopian Tube in Health and Disease - Advances in Human Reproduction, Bali, Indonesia, 4-9 April 1993. Carnforth, United Kingdom: Parthenon Publishing.
Dekretser, DM, Tilbrook, AJ and Clarke, IJ (1994). The Control of Fsh - Experiments Using Human Recombinant Inhibin. International Symposium on Inhibin and Inhibin-Related Proteins, Siena Italy, Jun 17-18, 1993. ROME: ARES-SERONO SYMPOSIA PUBLICATIONS.
Dekretser, DM, Tilbrook, AJ, Clarke, IJ, Simpson, BJ and Wreford, N (1993). The Role of Inhibin in the Control of Fsh and Spermatogenesis. 3rd Organon Round Table Conference - GnRH, GnRH Analogs, Gonadotropins and Gonadal Peptides, Paris France, 1992. LANCASTER: PARTHENON PUBLISHING GROUP LTD.
Clarke, IJ, Hemsworth, PH, Barnett, JL and Tilbrook, AJ (1992). Stress and Reproduction in Farm-Animals. International Symp On Stress and Reproduction, Port Douglas Australia, Jul 25-27, 1991. NEW YORK: RAVEN PRESS.
Preprint
Research Reports
Narayan, Edward, Gaughan, John, McNeill, David, Krishnasamy, Suresh, Tilbrook, Alan and Hoffman, Louw (2021). Researching the sustainable traceability of ruminant livestock production In Vietnam. 2020 ACIAR Launch Workshop. 21-22nd January, 2021. Online Zoom Event. Technical Report for ACIAR. Brisbane, Australia: The University of Queensland.
Narayan, Edward, Sawyer, Gregory, Fox, Dylan and Tilbrook, Alan (2020). Sheep shearing and epigenetic change. The Rocks, NSW Australia: Australian Wool Innovation.