There are many reasons for gilts in gilts. In addition to variety and physiological structure, they are also related to artificial management, seasons, nutrition, cysts, pseudo-pregnancy, etc. Some infectious diseases also have these symptoms. To solve these problems, they must be specific. Specific analysis of the problem and take corresponding measures.
1, congenital genital dysplasia or deformity should be eliminated in time.
2, the lack of nutrition to increase the protein, vitamins, minerals and other nutrients in the diet, and strengthen exercise.
3, for over-fertilized sows should lose weight, reduce or add roughage, and feed more green feed. Add 3% calcium chloride to the feed and feed for a few days, which has a weight loss effect.
4, the sows injection of chorionic gonadotropin 500-1000 units or pregnant horse serum 200-1000 units, and with boar lure, you can also use the two synthetic products PG600 better.
5. Ensure that the gilts have 4 hours of daylight or artificial light for 16-18 hours per day.
6. Let the sows who are not estrus contact the estrus.
7, change the pigsty and strengthen the stimulation.
8. Ensure that the gilt gilts are in contact with the boar for 15 minutes every day and often change the boar.
9, the detection of zearalenone feed is excessive, so as to avoid false pregnancy.
There are many factors that cause the return of breeding, and it is divided into regular return and irregular return according to the return time. Reasons for regular return are physiological structural abnormalities, seasonal infertility, cysts, operation during artificial insemination and quality of semen, overuse of boars at the time of delivery, lack of use for a long time, or lack of fertility and breeding of boars There is an error in the procedure; irregular return is caused by fever, infectious diseases, environmental temperature, trauma and fighting, seasonal effects, and excessive rearing after breeding.
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