Key questions about heat stress: Fertility and productivity

This installment focuses on the effects of heat stress on sow fertility.

Find the answer to these and other questions in the following slides. Just click on the screen to go to the next one.

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FAQs

How does heat stress affect sow fertility?

Heat decreases litter size by affecting ovulation and implantation.
It can cause uterine vasoconstriction and decreased fetal blood flow, leading to hypoxia and intrauterine death.
It alters the estrous cycle, causing anestrus, silent heat, or ovulation failure.
When body temperature exceeds 40°C, ovarian follicles are damaged and oocyte viability decreases.
It increases placental size, but without improving fetal growth.