A cow has a normal oestrous cycle but repeatedly fails to become pregnant despite correct insemination. Which term best describes this condition?
Correct answer: D. Repeat breeding
- A. Anoestrus
- B. Cryptorchidism
- C. Freemartinism
- D. Repeat breeding
Explanation
Repeat breeding describes a female that returns to oestrus after repeated services despite apparently normal cycles and no obvious reproductive abnormality. Anoestrus means absence of observable oestrus, while the other terms describe different developmental or male conditions.
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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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