What temperature and 50% humidity level signals the start of heat stress for dairy cows?
Answer
72°F
Dairy cows exhibit susceptibility to heat stress when environmental conditions reach a specific threshold. This negative impact on productivity and health begins when ambient temperatures hit 72°F, especially when coupled with 50% humidity. Temperatures exceeding this level negatively affect milk production rates and increase the likelihood of the herd becoming ill. Hokkaido's climate, rarely exceeding 80°F, helps maintain cow comfort, ensuring consistent, high-quality milk output necessary for superior butter production.
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