Reproductive Loss in Farm Animals during Heat Stress
نویسنده
چکیده
Heat stress causes infertility in farm animals and represents a major source of economic loss. In response to heat stress, managers can attempt a variety of approaches to improve reproduction. These approaches usually involve modifying the environment (i.e., attempting to cool cows during reproduction), modifying the genetics of the animal (i.e., breeding to heat tolerant breeds) or intensifying reproductive management during periods of heat stress. 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).
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