Sheep artificial insemination

Grasping the breeding characteristics and laws of sheep, understanding the various factors affecting reproduction rate, correct implementation of artificial insemination, can increase sheep breeding rate. The staff of the Provincial Breeding and Breeding Breeding Center introduced that sheep artificial insemination techniques include four aspects: trials, semen collection, semen examination and treatment, and insemination.

Try to pull the ram into the ewes group. If the ewes show signs of waking, approaching the ram, and accept escaping, they will be quarantined.

Collecting fine sperm before using the fake vagina and collecting bottles with normal saline to wash it again to remove impurities and lubrication, try not to use Vaseline lubrication, so as not to adhere to impurities. The sperm collection process must be skilled and stable. The ram will pull it down when it climbs for the first time, and collect semen when it crawls for the second time. This will improve semen quality and ejaculation volume.

After the sperm is inspected and handled, the amount of semen, sperm density and sperm motility should be quickly checked to determine the dilution ratio and insemination amount of semen. The original semen should be white or milky white, cloudy and odorless. Observed under the microscope, the sperm is intact and moves in a straight line. When diluting the semen, the isothermal diluent should be slowly poured into the semen and shaken. It is generally recommended to dilute 1 to 4 times.

The insemination rate for each insemination is 0.2-0.5 ml (the number of effective sperm is not less than 40 million), and the insemination site is in the cervix of the ewes. Adding 1000 international units of oxytocin per milliliter of semen can increase the conception rate but must be used within a short period of time. A female ejaculate is inseminated twice within 8 to 12 hours. Ewes with a long duration of estrus can perform 3 inseminations.

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