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Preventing heat stress in pigs

Screen Shot 2020-10-06 at 3.37.58 PM

Source: Mashilo Phosa, Chemuniqué, 5 October 2020, photo credit: AFMA Matrix October 2020

Heat stress in pigs is defined as a physiological response to high environmental temperatures, where an animal is out of its thermoneutral zone and can no longer effectively regulate its body temperature. As a result, animal health, well-being, and performance are negatively affected.

The effect of heat stress in pigs

When pigs are exposed to high temperatures, several behavioural, physiological, and metabolic mechanisms are activated to increase heat dissipation to maintain the body temperature within normal physiological ranges (Figure 1). The most effective mechanism to reduce heat production is to lower the feed intake, and this drop in feed intake is accentuated as bodyweight increases.
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