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Effect of isolation stress on b-endorphin and lh levels in ovariectomized ewes

Published online by Cambridge University Press:  21 November 2017

Eloy A.M.X.  and
Rodway R.G.
Eloy A.M.X.
Affiliation:
Department of Animal Physiology and Nutrition University of Leeds, Leeds LS2 9JT
Rodway R.G.
Affiliation:
Department of Animal Physiology and Nutrition University of Leeds, Leeds LS2 9JT
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Extract

The sheep is a highly social animal and isolation from others members of the same species causes acute emotional stress (Kilgour & De Langen, 1970). Emotional or psychological stress rather than physical stress appears to activate the hypothalamo-pituitary-adrenal system (Mason, 1968). As part of a study of the effect of stress on reproduction, we have investigated the effect of temporary isolation of sheep on the release of β-endorpbin and concomitant secretion of LH. Previous reports have shown that isolation causes β-endorphin release from the pituitary (Matven, 1987 and Al-Gahtani & Rodway, 1991), but there is little information available on the effect of isolation stress on LH release. The purpose of this work was to examine the temporal relationship between β-endorphin release and LH secretion in sheep during isolation.

Type
Sheep, Goats and Deer
Information
Proceedings of the British Society of Animal Production (1972) , Volume 1994 , March 1994 , pp. 220
Copyright
Copyright © The British Society of Animal Production 1994

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References

Al-Gahtani, S., and Rodway, R.G, (1991) β-endorphin and stress in sheep. PhD Thesis. University of Leeds.Google Scholar
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