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  1. Filial attachment in sheep: similarities and differences between ewe-lamb and human-lamb relationships

    Contributor(s):: Nowak, R., Boivin, X.

    Animals develop relationships with intra- and interspecific partners, including humans. In some cases this can lead to strong emotional bonds indicating the existence of attachment. The sheep is well known to develop various forms of social attachment (mothers towards young, lambs towards...

  2. Naloxone cannot abolish the lack of oxytocin release during unexperienced suckling of dairy cows. (Special issue: Suckling)

    Contributor(s):: Kraetzl, W. D., Tancin, V., Schams, D., Bruckmaier, R. M.

    To evaluate the role of opioids for the regulation of oxytocin release in response to teat stimulation, 10 brown-Swiss dairy cows in mid-lactation were randomized to two experiments. In the first experiment, four cows without previous suckling experience were suckled by an alien calf between two...

  3. The responsiveness of sows to their piglets in relation to the length of parturition and the involvement of endogenous opioids

    Contributor(s):: Jarvis, S., McLean, K. A., Calvert, S. K., Deans, L. A., Chirnside, J., Lawrence, A. B.

    The aim of this study was to describe maternal behaviour in the pig and to investigate the effect of endogenous opioids on maternal responsiveness. The behaviour of 16 Large White x Landrace female pigs was recorded around farrowing. The pig's posture and her response when piglets were present at...

  4. The relationship between housing and social rank on cortisol, beta -endorphin and dynorphin (1-13) secretion in sows

    Contributor(s):: Zanella, A. J., Brunner, P., Unshelm, J., Mendl, M. T., Broom, D. M.

    Endogenous opioids and glucocorticoids may be useful welfare indicators in pigs. Measures of plasma cortisol were carried out in plasma samples collected hourly, from 8:00 to 17:00 h from High Ranking (HR) (n = 5) Middle Ranking (MR) (n = 7) and Low Ranking (LR) (n = 4) group housed sows and from...