The reproductive ability of a breeding sow is a key factor to measure the overall productivity of a pig farm. In order to obtain higher economic benefits, we need to work hard to improve the reproductive capacity of breeding sows.

So how can we do this job effectively? This requires us to do a good job in the selection and breeding of gilts, meet the nutritional needs of sows at different stages, do a good job in sow feeding management, and prevent the occurrence of reproductive disorders.

Selected and bred gilts are the prerequisite guarantee for improving fecundity. For this reason, in addition to good body shape and breast development, the selection of gilts should have more than 12 teats, and the genetic basis of parental fecundity should also be considered, and the index of sire line and maternal line should be taken into consideration. Carry out the selection and determination of sow fertility traits. The traits mainly include the number of live piglets per litter per sow, the number of litters weaned, the 21-day-old litter weight and the number of litters per year. The heritability of fecundity traits is low, which is greatly affected by environmental factors, the repetition is low, and the genetic progress is small. During the measurement, minimize the environmental differences between the litters of the sows and make the determined differences have genetic properties. Select from the record results The offspring of excellent sows are used as replacement pigs, and families and individuals with poor performance are eliminated. Strictly control the age and weight of the initial mating, implement repeated mating, and strengthen feeding management to maximize the heritability of the sow. The gilts are generally raised in small groups, and some supplements can be added to the food. broods of pigletsThere are fewer limbs and hoof diseases, less mastitis, shorter estrus intervals, and longer effective breeding time (more brooding). Better circulation of oxygen, less pressure (higher survival rate). Produce better milk, stronger piglets, and higher survival rates. . Growing pigs are stimulated by boars of no less than 20 minutes a day to obtain a higher estrus rate and conception rate.

These reproductive diseases should be the key targets for prevention and control of sow reproductive and respiratory syndrome. The pathogenic virus has the ability of immunosuppression, reduces the number of macrophages in the body, and easily induces various types of complications. Therefore, clinical treatment should focus on preventing complications and symptomatic treatment. At the same time, pay attention to vaccination, inactivated vaccine or attenuated vaccine, targeted vaccination according to the actual situation, can play a good prevention and control effect. Immunization is the main measure to prevent and control the disease. Attenuated vaccines and inactivated vaccines are available as vaccines. Inject attenuated vaccine or inactivated vaccine one month before mating of primiparous sows to ensure that they have enough antibodies to protect the fetus from harm. Antibody. To some extent, it is a key factor to measure the overall productivity of a pig farm. For this reason, increasing the reproductive ability of reproductive sows should be paid attention to. Of course, a well-bred gilt is the guarantee of improving fecundity in advance.

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How can we raise sows? Just do these points.