In cattle, ovulation usually occurs at approximately what time after the end of standing oestrus?
Correct answer: C. 10 to 12 hours
- A. 2 to 4 hours
- B. 20 to 24 hours
- C. 10 to 12 hours
- D. 36 to 48 hours
Explanation
In cows, ovulation generally occurs about 10 to 12 hours after standing oestrus ends. This timing explains why insemination is commonly performed before ovulation rather than at the exact moment of ovulation.
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About Theriogenology and Animal Reproduction
Covers the reproductive anatomy and physiology of male and female domestic animals, including puberty, oestrous cycles, ovulation, fertilisation, pregnancy, parturition and lactation. It also includes artificial insemination, semen evaluation, pregnancy diagnosis, infertility, dystocia and reproductive disorders, with attention to species differences.
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