Grasping sow mating is the first pass to increase the number of litters per year, the number of litters and the cost of production. In order for the sow to be able to register for prolificacy in time, both the sperm and the egg must meet at the most energetic period to achieve the goal of multiple abortions. First of all, to master the law of ovulation ovulation, the general sows within 24 to 36 hours after estrus ovulation, after the egg discharge in the sow fallopian tubes can only maintain 8 to 12 hours of vitality. The sperm-egg binding is in the upper 1/3 of the fallopian tube. The sperm that the boar shoots during mating must pass 2 to 3 hours before they can swim to the site of fertilization. It can survive for about 10 to 20 hours. In light of the above, timely mating should be carried out 12 to 18 hours after the sow has undergone the pressback test and again at 12 hours. It is usually necessary to ensure that 2 to 3 breedings are performed per sow. As far as the sow's age is concerned, the old ones will be allocated as early as possible, and the old ones will not match the middle ones. When breeding, try to increase the stimulation of the sow, especially when artificial insemination, try to keep the boar on the ground and make contact with the nose and nose of the sow.
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