![Sample our Environment & Agriculture journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5934/TOC-Subject-Sample-2021-Environment-Agriculture.jpg"})
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.