1. Grasp the overwintering management of males and females, and rejuvenate them to strengthen their rejuvenation so as to ensure that the spring is matched with the species on time.
Second, choose a good species of boar breeding. As the saying goes: "The mother has a good nest and the public has a good slope." The quality of the boar is not excellent, directly affect the number and quality of calving.
The boars should adopt distant hybridization and selective hybridization, distant hybridization, avoiding inbreeding, selecting the best hybrids, and selecting the breeding species of boar breeds.
Wintering boars should strengthen exercise, drink enough water, feed more green feed, and improve sexual performance.
Third, prepare ready for breeding.
Fourth, the selected breeding sows, do a good job in breeding programs, where should be allocated sows, should be selected in advance. According to the body size, fat and different varieties, select different objects and make a breeding plan.
Fifth, do sow estrus identification. Estrus identification is related to the breeding rate, and for sows that are not estrus, aphrodisiac is used to promptly aphrodisiac. Such as strengthening exercise, boar sympathy, arch circle, feeding green feed, etc., sows can be weaned ahead of time, injection of some aphrodisiac drugs, in order to improve the conception rate, can take re-equipment, compounding method.
Sixth, do a good job breeding records. For breeding records, time should be recorded. All sorts of projects for childbirth are the basis for preparations for selection and matching, lack of records, management, and economic value.