The normal oestrous cycle of a cow usually lasts approximately how long?
Correct answer: C. 21 days
- A. 7 days
- B. 14 days
- C. 21 days
- D. 35 days
Explanation
The bovine oestrous cycle averages about 21 days, although individual cycles may vary slightly. A 14-day interval is closer to part of the luteal phase than to the complete cycle.
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Covers the recognition, diagnosis, prevention and medical treatment of diseases affecting domestic animals, including infectious, metabolic, nutritional, toxic and organ-system disorders. It links history taking, physical examination, clinical signs, laboratory findings and differential diagnosis with appropriate therapy and herd or flock control.
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