Heat stress affects reproduction in all major farm species. Dairy cattle
are particularly sensitive to heat stress because of the metabolic heat produced in lactating cows.
This review will focus specifically on the effects of heat stress on reproduction in dairy cows. The reader is referred to additional reviews on heat stress and reproduction in sheep (Silanikove,
2000), pigs (Wettemann and Bazer, 1985), and poultry (Daghir and Jones, 1995).