How can reproductive disorders in pigs be effectively reduced?

Reducing reproductive disorders in pigs: 1. Breeding healthy boars and sows: First, through vaccination or medication prevention, ensure that boars and sows are not troubled by diseases, especially the prevention of pseudorabies, swine fever, parvovirus, Japanese encephalitis, as well as infectious diseases such as chlamydia and eperythrozoonosis. Second, manage boars and sows well by stages, that is, reserve boars and sows, pregnant sows, farrowing sows, open sows, young boars, mature boars, etc., should all be cared for according to their respective characteristics and needs. Third, the prevention and treatment of limb and hoof diseases in boars and sows, mastitis in farrowing sows, and metritis. Fourth, strengthen exercise. Except for pregnant sows around the embryo implantation period and near farrowing, when they should not exercise much, exercise should be appropriately increased in other periods, especially for boars and reserve sows, which can exercise for about 1 hour every other day or every morning and evening, so as to fully exercise the bones. 2. Implement early weaning to increase the number of litters per year. 3. Use new technologies to increase the farrowing rate. For sows that have not yet shown estrus 10 to 15 days after weaning, hormones or traditional Chinese medicine can be used to induce estrus, such as Sinong (600) 1 dose per head, pregnant mare serum gonadotropin, 1000 units per head, etc. 4. Control postpartum diseases in sows and promote the healthy growth of suckling piglets: do a good job in preventing constipation before and after farrowing in sows and in preventing metritis and mastitis after farrowing, etc. 5. Strictly control feed and provide high-quality complete feed and green fodder. 6. Timely cull and supplement reserve pigs.