Publications

The similarity principle underlying social bonding among female rhesus monkeys

Twenty adult female rhesus monkeys (Macaca mulatta) were observed over a three-year period. They lived in a mixed captive group with kinship relations known for three generations. The study's aim was to test Seyfarth's [J. theor. Biol. 65: 671-698, 1977]...

Year Published: 1986Animal Type: Macaque, Nonhuman Primate

Citation: de Waal, F. B. M., Luttrell, L. M. 1986. The similarity principle underlying social bonding among female rhesus monkeys. Folia Primatologica 46(4), 215-234.

Environmental needs of primates in captivity

A synopsis of a workshop

Year Published: 1986Animal Type: Nonhuman Primate

Citation: Croudace, C. 1986. Environmental needs of primates in captivity. RATEL (Journal of the Association of British Wild Animal Keepers) 13, 139-142.

Effects of aging and housing in an enriched environment on sleep-wake patterns in rats

Rats housed in enriched versus barren cages show brain changes indicative of enhanced cerebral activity, and they spend more time sleeping.

Year Published: 1986Animal Type: Rat, Rodent

Citation: Van Gool, W. A., Mirmiran, M. 1986. Effects of aging and housing in an enriched environment on sleep-wake patterns in rats. Sleep 9, 335-347.

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.

Facts, fiction and rational decisions

Rats showed a significant increase in plasma glucocorticosteroids after being moved by lift from one room to another, even though they remained in their home cages.

Year Published: 1986Animal Type: Rat, Rodent

Citation: Ursin, H., Murison, R. 1986. Facts, fiction and rational decisions. Acta Physiologica Scandinavica 554(Supplement 1), 234-242.

Aversion of sheep to electro-immobilization and physical restraint

Thirty-six Merino wethers were forced along a sheep race and were either electro-immobilized using a commercially-available instrument, restrained with the electro-immobilizer electrodes attached, physically restrained in a sheep-handling machine or allowed to run freely through the race. The degree of...

Year Published: 1986Animal Type: Sheep

Citation: Rushen, J. 1986. Aversion of sheep to electro-immobilization and physical restraint. Applied Animal Behaviour Science 15, 315-324.

Social interactions among rats housed in grouped and enriched conditions

No evidence was found in support of the hypothesis that play is responsible for the effects of environmental enrichment.

Year Published: 1986Animal Type: Rat, Rodent

Citation: Renner, M. J., Rosenzweig, M. R. 1986. Social interactions among rats housed in grouped and enriched conditions. Developmental Psychobiology 19, 303-313.

Social behaviour and reproductive performance in semi-wild Scottish Highland cattle

Social behaviour and reproductive performance in a herd of semi-wild Scottish Highland cattle were assessed over a period of 4 years. Dominance relationships were very firm. Being predictable to each other, the animals had little reason for overt aggressive conflicts...

Year Published: 1986Animal Type: Cattle

Citation: Reinhardt, C., Reinhardt, A., Reinhardt, V. 1986. Social behaviour and reproductive performance in semi-wild Scottish Highland cattle. Applied Animal Behaviour Science 15, 125-136.

Effects of type of cage partition, cage shape, and bird density on productivity and well-being of layers

In Experiment 1 there were no significant differences in rate of lay, egg quality, latency to feeding, and feather condition of hens in cages with wire mesh or solid metal side partitions. Birds in cages with solid metal side partitions...

Year Published: 1986Animal Type: Bird, Chicken

Citation: Ramos, N. C., Anderson, K. E., Adams, A. W. 1986. Effects of type of cage partition, cage shape, and bird density on productivity and well-being of layers. Poultry Science 65, 2023-2028.

Ethics of animal welfare in research: The institution’s attempt to achieve appropriate social balance

Physical restraint procedures should be used on awake animals only after alternative procedures have been considered and found to be inadequate. If a restraint will be utilized the animal should be trained or conditioned to the restraining device, using positive...

Year Published: 1986Animal Type: All/General

Citation: Prentice, E. D., Zucker, I. H., Jameton, A. 1986. Ethics of animal welfare in research: The institution's attempt to achieve appropriate social balance. The Physiologist 29, 1&19-21.