Pig

Effects of frequent interactions with humans on growing pigs

Repeated handling ameliorated fear and stress responses to people.

Year Published: 1986Animal Type: Pig

Citation: Gonyou, H. W., Hemsworth, P. H., Barnett, J. L. 1986. Effects of frequent interactions with humans on growing pigs. Applied Animal Behaviour Science 16, 269-278.

Endocrine and behaviour changes associated with intensive housing systems for swine

Year Published: 1986Animal Type: Pig

Citation: Becker, B. A., Ford, J. J., Nienaber, J. A. et al. 1986. Endocrine and behaviour changes associated with intensive housing systems for swine. In: Swine in Biomedical Research, Volume 1. Tumbleson, M. E. (ed), 173-189. Plenum Press, New York, NY.

Changes in blood acid-base characteristics, haemoglobin and lactate concentrations due to increasing moderate stress in pigs

Even moderate restraint stress can cause significant changes in the acid-base balance.

Year Published: 1986Animal Type: Pig

Citation: Van de Wal, P. G., Engel, B. v. E. G., Huslhof, H. G. 1986. Changes in blood acid-base characteristics, haemoglobin and lactate concentrations due to increasing moderate stress in pigs. Netherlands Journal of Agricultural Science 34, 108-111.

The effects of pregnancy and parity number on behavioural and physiological responses related to the welfare status of individual and group-housed pigs

Pigs housed in tether stalls showed immunosuppression suggesting that their welfare was impaired. It was concluded that unresolved aggression in tether-housed pigs may result in a chronic stress response.

Year Published: 1987Animal Type: Pig

Citation: Barnett, J. L., Hemsworth, P. H., Winfield, C. G. et al. 1987. The effects of pregnancy and parity number on behavioural and physiological responses related to the welfare status of individual and group-housed pigs. Applied Animal Behaviour Science 17, 229-243.

The impact of handling and environmental factors on the stress response and its consequences in swine

Animals who are fearful of humans show a marked increase in corticosteroid levels both in the presence and in the absence of people. A poor human-animal relationship, in which swine are fearful of human, should be avoided in animal production...

Year Published: 1986Animal Type: Pig

Citation: Barnett, J. L., Hemsworth, P. H. 1986. The impact of handling and environmental factors on the stress response and its consequences in swine. Laboratory Animal Science 36, 366-369.

The effect of environmental enrichment on aggression in newly weaned pigs

The provision of enrichment object [tire hung from chains, pig-pacifier toy , teeter-totter ] reduced aggression among newly weaned pigs.

Year Published: 1987Animal Type: Pig

Citation: Schaefer, A. L., Salomons, M. O., Tong, A. K. W. et al. 1987. The effect of environmental enrichment on aggression in newly weaned pigs. Canadian Journal of Animal Science 67, 1169 (Abstract).

Learning and the training of farm animals

Habituation attenuates the fear normally associated with novel situations.

Year Published: 1987Animal Type: All/General, Cattle, Pig, Sheep

Citation: Kilgour, R. 1987. Learning and the training of farm animals. The Veterinary Clinics of North America 3, 269-284.

Toys, mingling and driving reduce excitability in pigs

Pigs offered toys are less excitable than pigs who have no access to toys.

Year Published: 1987Animal Type: Pig

Citation: Grandin, T., Curtis, S. E., Taylor, I. A. 1987. Toys, mingling and driving reduce excitability in pigs. Journal of Animal Science 65(Supplement 1), 230 (Abstract).

The Veterinary Clinics of North America, Farm Animal Behavior: Animal Handling

Pigs raised in pens with hanging rubber hose toys and weekly petting were less excitable compared to pigs raised with no extra environmental stimulation.

Year Published: 1987Animal Type: Pig

Citation: Grandin, T. 1987. Animal handling. The Veterinary Clinics of North America 3, 323-338.

Food restriction as a cause of stereotypic behaviour in tethered gilts

Food restriction can be a cause of stereotypic behaviors in pigs. The implication is that animals given small amounts of food should not be closely confined and that confined animals should not be deprived of food.

Year Published: 1987Animal Type: Pig

Citation: Appleby, M. C., Lawrence, A. B. 1987. Food restriction as a cause of stereotypic behaviour in tethered gilts. Animal Production 45, 103-110.