How to increase sows' litter size?

First, raise a good boar. To strengthen nutrition, ensure semen quality; moderate exercise, enhance physical fitness; reasonable use, strictly control the age of breeding boars, weight and frequency of breeding, to avoid premature aging. General boars have an initial age of 8-9 months and a body weight of about 100 kg.

Second, raise a good sow. It is necessary to adjust the sow's lyrical condition and pay attention to the full price of the diet. Special attention should be paid to adequate high-quality green fodder in the diet to increase the ovulation number of the sow and improve the quality of the egg. The age of the pig was 8 months and the weight was 75-100 kg.

Third, timely breeding. Usually in the production of more than the second day after the estrus, since the sows are staged ovulation, so we must try to meet more sperm and some eggs meet in time, in order to form more fertilized eggs, so each season to be breeding 2-3 times, 11-12 hours apart. In practice, attention should be paid to the difference in the age of the sow, and the estrus performance is different. The breeding “heating” should be mastered in due course. In production practice, the use of compounding methods can increase the number of sows born.

Fourth, control the sow, pay attention to miscarriage. Abortion is the basis for raising the number of litters, but ignoring the miscarriage will affect the number of litters of sows due to miscarriage and stillbirth during pregnancy.

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