On the Scottish archipelago of St. Kilda, the Soay sheep may not have any natural predators, but they do have the elements to contend with: a lack of food, brutal weather that can kill off half the ...

In Australia only 5 per cent of sheep are bred using artificial insemination New research hopes to increase the conception rates in ewes from frozen sperm The anatomy of the sheep's reproductive ...

EDINBURGH, Scotland, Jan. 13 (UPI) --Vitamin D is called the sunshine vitamin because its most efficiently absorbed by taking in the sun's rays. A new study suggests wild sheep who get a sufficient ...

Nearly 10 years after the discovery that birds make a hormone that suppresses reproduction, neuroscientists have established that humans make it too, opening the door to development of a new class of ...

A viral gene embedded in the sheep genome plays an essential role in the growth of the animal's placenta, according to a study of impregnated sheep. The result strengthens the case that similar viral ...