The ovulation time of the female donkey is generally 3 to 5 days after the beginning of oestrus, that is, 1 day before oestrus is stopped. The mating time should be performed within 1 to 5 days of the duration of oestrus, and the fertilization rate is high. Generally, the first estrus time of the maternal female donkey is 7 to 12 days after delivery; the ovulation time of the female donkey is mostly in the 7th to 10th days of estrus, and ovulation occurs within 12 to 24 hours before the estrus is stopped. Therefore, it is best to give the female donkey 1-30 hours before ovulation. At this point, breeding is the easiest to suffer. The female donkey's gestation period is 348 to 377 days, with an average of 360 days.

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