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Review Article

How daylight affects reproduction in sheep

Pages 137-138 | Published online: 23 Feb 2011
 

Abstract

Seasonal patterns of reproduction in New Zealand sheep flocks arise primarily from the annual changes in daily photoperiod. Sheep detect these changes in lighting by means of a built-in biological “clock” and this information is relayed to the hypothalamic-gonadal axis via the pineal gland. The current level of understanding of the mechanisms which are involved in these processes is briefly reviewed.

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