In the breeding process, if the first breeding time of the gilt is not well selected, it will affect the breeding function of the sow, and there will be fewer litter size and thin piglets. Therefore, it is necessary to allow the gilts to be bred for the first time not only the sow sex. Mature and physically mature. Sows are suitable for breeding at 8 months of age and have a weight of 90 kg or more. Boars should be 8-9 months old and weighing more than 100 kg. Large breed pigs should be above 110 kg. The sensation is better, too fat or too thin pigs are not suitable for pregnancy. There are also opportunities for sow mating. Pay attention not to estrus on breeding, it should be in the third estrus after the mating in order to ensure that it has enough litter size. Before immunization, immunization must be done. The vaccines that need to be vaccinated include parvovirus vaccine, PRRSV pseudorabies vaccine, swine fever vaccine, swine erysipelas vaccine, and lung disease vaccine. Inoculation of these vaccines cannot be performed on the same day. Different vaccination times are different. In management, try to give the sow a quiet environment and reduce unnecessary stimulation, so as to increase the chance of sow conception and increase litter size. Hand massager Hand massager Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.szmeizons.com