Which measure is most useful for evaluating the reproductive efficiency of a dairy herd?
Correct answer: D. Calving interval
- A. Coat colour distribution
- B. Average horn length
- C. Daily salt consumption
- D. Calving interval
Explanation
Calving interval reflects the time between successive calvings and is influenced by oestrus detection, conception, and pregnancy management. Horn length, salt intake, and coat colour do not directly measure herd reproductive efficiency.
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