Recently, at the "11th China Sow Health Management Seminar" co-sponsored by "Agricultural Collection", Xinmunet, and Pig Farm Power Network, the veterinarian of the pig breeding company in Guangdong Wenshi Food Group Co., Ltd. Introduction, the pig farm needs to have a reasonable gestational age structure, it can improve the breeding performance of the farm to ensure the normal turnover of the herd. There should also be a standard for sows to be eliminated. Sows should be actively eliminated as much as possible, rather than being eliminated passively.
Reasonable gestational age structure
According to Yan Wenbiao, a reasonable gestational age structure refers to the proportion of basic sows in the basic sow herd after full-scale production of the pig farm. Different gestational age structures in different parent generations, the sows in the nucleus herds generally stay to five children, and pure breeding and expanding herds can only maintain six times. The proportion of 1-2 fetuses is about 60% for the core group, about 50% for the pure breed group, about 40% for the miscellaneous group, and about 30% for the fetal field. The cost of breeding is higher in the gestational age structure and cannot be kept too long. In order to ensure the advantages of breeding pigs, the gestational age structure must be ensured, and the cost of 1-2 tires is also the highest. Therefore, the management of 1-2 fetal pigs is the most important task for the maintenance of reserve pigs, and the subsequent spare pigs in an excellent pig farm are healthy.
Yan Wenbiao mentioned that the reproductive performance of the 3-7 fetal pigs in the market is the best, and the proportion of 3-7 fetuses is very important for the fecundity of the farm. Due to the poor disease resistance of 1-2 fetuses and 8 or more sows, maintaining a reasonable gestational age structure can ensure the health of breeding herds. The structure of gestational age is reasonable, and the distribution of each parity is relatively uniform. It is also more convenient to do production planning, management, and introduction, and it will not cause disjointed production. Since the production conditions of different fields are not the same, the establishment of a reasonable gestational age structure should establish the actual gestational age structure standards that are suitable for the field. The principle of commodity farms is that 3-7 tires account for more than 60%, and 8 or more babies are below 10%, 1 -2 fetuses account for about 30%. Establish weekly, monthly, and quarterly gestational age structure manual reports and establish gestational age structure dynamic monitoring reports in computer systems.
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