1. Farm animal (mammal) enrichment;Appleby,1995
2. The investigation of animal perception;Baldwin,1996
3. Genetics of disease resistance in sheep and goats;Bishop;Small Rumin Res.,2007
4. Animal welfare defined in terms of attempts to cope with the environment;Broom;Acta Agri. Scand. A,1996
5. Welfare, stress and the evolution of feelings;Broom;Adv. Study Behav.,1998