Behavioral, cardiac and cortisol responses to brief peer separation and reunion in cattle

Behavioral, cardiac, and adrenal responses of heifers to short-term isolation and to subsequent reunion with familiar or nonfamiliar conspecifics were measured. Two groups of heifers were studied according to their different social reactivity: Aubrac heifers (n=12) reared under suckler conditions and Friesian heifers (n=12) reared under dairy management. Because these two groups could also react […]

Maternal response to mother-offspring separation in the chimpanzee (Pan troglodytes)

For management and/or research purposes, chimpanzee mothers and their offspring are often physically separated from one another at an earlier age than they would be in the wild. Studies of the behavioural and physiological effects of mother-infant separation on infant behaviour have been conducted in both human and nonhuman primates. However, few studies have been […]

Social attachment in giraffe: response to social separation

Attachment relationships between animals are often studied by separating a pair of individuals and recording their subsequent behavior. Studies of non-human primates have shown that separation results in changes that are indicative of both psychological and physiological stress. Similar results have been found in several non-primate species with differing social structures. This study exam-ined the […]

Behavioral and cortisol responses of adult marmoset monkeys (Callithrix penicillata) to different home-cage social disruption intervals

Social separation is an increasingly used strategy to experimentally assess psychogenic stress in nonhuman primates, yet it is also inherently required for captive management. Surprisingly, little is known on the effects of an individual left alone in a highly familiar place, compared to novel-environment isolation. Therefore, using stable heterosexual pairs of adult marmosets (Callithrix penicillata), […]