Which sign most directly indicates heat stress in a high-producing dairy cow?
Correct answer: D. Increased respiration rate with panting
- A. Marked improvement in feed intake
- B. Reduced body temperature with shivering
- C. Increased cud chewing after feeding
- D. Increased respiration rate with panting
Explanation
Panting and an elevated respiration rate are common immediate responses to heat stress as the cow attempts to lose body heat. Heat-stressed cows usually reduce feed intake rather than showing a marked improvement.
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