Healthy and high-yield sows can increase the annual output of the pig farm and effectively reduce the production cost of pigs. Therefore, the establishment of healthy and high-yield sows and the use of good pig breeding equipment are the key to realize the final benefit of the pig farm. In order to maintain the strong productivity of sows, producers usually update sows according to the plan. The annual renewal rate of sows in commercial pig farms is about 30%. Generally, two methods are adopted to supplement the reserve pigs, one is to introduce from other pig farms, the other is to select and retain the pigs in this farm. Most of the pig farms introduced excellent breeding pigs to replace the original sows. The following preparations should be done before introduction.
1. Make introduction plan
In order to avoid the risk of epidemic disease in different pig farms, large-scale pig farms should select a single kind of pig farms to introduce the reserve sows, and determine the required varieties and quantities according to the renewal plan of pig herds.
2. Understand the epidemic situation
To understand the prevalence of swine diseases and the health status of breeding pigs in the imported pig farms. It is necessary to introduce the healthy reserve pigs from the breeding pig farms in the areas where there is no serious epidemic disease. At the same time, it is necessary to understand the immunization procedures and control measures of the introduced breeding pig farms.
3. Isolation and disinfection
The breeding pig farm shall be equipped with isolation houses, which shall be more than 300 meters away from the production area. The isolation houses and their utensils shall be strictly disinfected with good quality disinfectants 30 days (at least 7 days) before the introduction of breeding pigs. The pigs must be kept in isolation for 30-45 days after arriving at the field. They must be quarantined strictly. Blood sampling must be carried out to confirm that there is no positive bacterial infection or wild virus infection. The antibody conditions such as classical swine fever, foot-and-mouth disease must be detected. One week after the pigs arrive at the farm, they should be vaccinated with various vaccines such as classical swine fever, foot-and-mouth disease, highly pathogenic blue ear disease, etc. according to the immunization procedures of the farm.
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