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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...
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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...
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Behaviour of restricted-fed broiler breeders in relation to pharmacological manipulation of dopamine and opioid receptor subtypes
Contributor(s):: Kostal, L., Savory, C. J.
