How daylight affects reproduction in sheep.
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.
Barrell
G K
GK
Veterinary Science Department, Lincoln College, Canterbury.