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Beating Summer Heat Stress in Dairy Cows

By Eva Rizzuto

As summer temperatures rise, so does the risk of heat stress in dairy cattle. Cows that are heat stressed are less productive, costing you money over the summer. This article will cover what heat stress is, signs to look out for, the effects it has on dairy cattle, and some practical options for preventing it.

Heat Stress

Dairy cattle are homeothermic, which means they are generally able to keep their body temperature stable. However, during times of extreme heat index, cows, particularly lactating Holsteins, may experience heat stress. Heat stress occurs when a cow absorbs more heat than its body can handle. This typically occurs when a cow’s internal body temperature exceeds the normal range of 100°F to103°F.

Source : unh.edu

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