If the reproductive organs of ewes are normal, do not estrus for a long time, or miss the estrus period and fail to mate and conceive, artificial estrus early mating can be performed, and sheep can be examined for estrus follicles using B-ultrasound before mating. Reduce unnecessary economic losses.

Method of using B-ultrasound to assist in artificial estration of ewes

The deep vaginal hormone implantation method involves placing a sponge soaked in progesterone 50-70 mg or progesterone 150-300 mg outside the cervix for 14 days. The sponge is tied with cotton thread and left visible at the external genital opening. After 14 days, the sponge is pulled out. After stopping the medication, inject 400-500IU of pregnant horse serum. After 28-32 hours, estrus can occur. On the day of estrus and the next day, ejaculate once or mate naturally more than twice. Before ejaculation, it is best to use sheep ultrasound to measure their follicles and then determine the time.

Prostate method: After the ewe finishes estrus, prostate hormone can be injected into the uterus or intramuscularly for a few days, and mating can be done 2-3 days later.

The method of supplementing feed to stimulate estrus can promote estrus and increase the conception rate of ewes by supplementing feed 30 days before mating.

Hormone induced multiparous lambs can increase the number of ovulations. On the 12th to 13th day of the ewe's estrus cycle, intramuscular injection of pregnant horse serum 600-800IU is administered. After estrus, mating is immediately carried out, and on the same day, intramuscular injection of chorionic gonadotropin 500-700IU can promote the release of dozens of eggs, achieving the goal of multiparous offspring. When sheep are observed by B-ultrasound, many follicles can be seen.

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