Advisory Committee on Genetic Modification. 1989. Guidelines on work with transgenic animals. ACGM/HSE 9. Health and Safety Executive, London.
Aitchison, J. 1986. The statistical analysis of compositional data. Chapman and Hall, London.
Arnold, G. W. 1975. Herbage intake and grazing behaviour in ewes of 4 breeds at different physiological states. Australian Journal of Agricultural Research 26: 1017–1024.
Arnold, G. W. and Mailer, R. A. 1974. Some aspects of competition between sheep for supplementary feed. Animal Production 19: 309–319.
Banner Committee. 1995. Report of the Committee to the Ethical Implications of Emerging Technologies in the Breeding of Farm Animals. Her Majesty's Stationery Office, London.
Broom, D. M. 1981. Biology of behaviour, mechanisms, functions and applications. Oxford University Press, Oxford.
Broom, D. M. 1993. Assessing the welfare of modified or treated animals. Livestock Production Science 36: 39–54.
Chatfield, C. and Collins, A. J. 1980. Introduction to multivariate analysis. Chapter 8. Chapman and Hall, London.
Doi, T., Striker, L. J., Quaife, C., Conti, F. G., Palmiter, R., Behringer, R., Brinster, R. and Striker, G. E. 1988. Progressive glomerulosclerosis develops in transgenic mice chronically expressing growth hormone and growth hormone releasing factor but not in those expressing insulin-like growth factor-1. American Journal of Pathology 131: 398–403.
Done-Currie, J. R., Hecker, J. F. and Wodzicka-Tomaszewska, M. 1984. Behaviour of sheep transferred from pasture to an animal house. Applied Animal Behaviour Science 12: 121–130.
Dove, H., Beilharz, R. G. and Black, J. L. 1974. Dominance patterns and positional behaviour of sheep in yards. Animal Production 19: 157–168.
Dudziński, M. L. and Arnold, G. W. 1979. Factors influencing the grazing behaviour of sheep in a Mediterranean climate. Applied Animal Ethology 5: 125–144.
Evock, C. M., Etherton, T. D., Chung, C. S. and Ivy, R. E. 1988. Pituitary porcine growth hormone (pGH) and a recombinant pGH analog stimulate pig growth in a similar manner. Journal of Animal Science 66: 1928–1941.
Gary, L. A., Sherrit, G. W. and Hale, E. B. 1970. Behaviour of Charolais cattle on pasture. Journal of Animal Science 30: 203–206.
Gonyou, H. W. 1984. The role of behaviour in sheep production: a review of research. Applied Animal Ethology 11: 341–356.
Great Britain Parliament. 1986. Animals (Scientific Procedures) Act. Her Majesty's Stationery Office, London.
Jarman, P. J. 1974. The social organisation of antelope in relation to their ecology. Behaviour 48: 215–267.
Loew, F. M. 1994. Beyond transgenics: ethics and values. British Veterinary Journal 150: 3–5.
Lynch, J. J., Hinch, G. N. and Adams, D. B. 1992. The behaviour of sheep. Biological principles and implications for production. CAB International, Wallingford.
McNatty, K. P. and Young, A. 1973. Diurnal changes of plasma cortisol levels in sheep adapting to a new environment. Journal of Endocrinology 56: 329–330.
Pearson, R. A. and Mellor, D. J. 1976. Some behavioural and physiological changes in pregnant goats and sheep during adaptation to laboratory conditions. Research in Veterinary Science 20: 215–217.
Penning, P. D., Parsons, A. J., Newman, J. A., Orr, R. J. and Harvey, A. 1991. The effects of group size on grazing time of sheep. Applied Animal Behaviour Science 37: 101–109.
Poole, T. B. 1995. Welfare considerations with regard to transgenic animals. Animal Welfare 4: 81–85.
Pursel, V. G., Pinkert, C. A., Miller, K. F., Bolt, D. J., Campbell, R. G., Palmiter, R. D., Brinster, R. L. and Hammer, R. E. 1989. Genetic engineering of livestock. Science 244: 1281–1288.
Reenen, C. G. van and Blokhuis, H. J. 1993. Investigating welfare of dairy calves involved in genetic modification: problems and perspectives. Livestock Production Science 36: 81–90.
Rook, A. J. and Penning, P. J. 1991. Synchronisation of eating, ruminating and idling activity by grazing sheep. Applied Animal Behaviour Science 32: 157–166.
Sherwin, C. M. 1990. Priority of access to limited feed, butting hierarchy and movement order in a large group of sheep. Applied Animal Behaviour Science 25: 9–24.
Sherwin, C. M. and Johnson, K. G. 1987. The influence of social factors on the use of shade by sheep. Applied Animal Behaviour Science 18: 143–155.
Squires, V. R. and Daws, G. T. 1975. Leadership and dominance relationships in Merino and Border Leicester sheep. Applied Animal Ethology 1: 263–274.
Syme, L. A. 1981. Social disruption and forced movement in sheep. Animal Behaviour 29: 283–288.