Which observation is most useful for detecting oestrus in a cow?
Correct answer: D. The cow stands to be mounted by another cow
- A. The cow spends more time lying quietly
- B. The cow stops drinking water for the entire day
- C. The cow has a permanent rise in body temperature
- D. The cow stands to be mounted by another cow
Explanation
Standing to be mounted is the most reliable visible sign of oestrus in cattle. Restlessness, mounting other animals, and clear mucus may also occur, but reduced water intake and persistent fever are not normal signs of heat.
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