The technical core of sow-time rearing is to raise sows of the same parity and keep the sows of different parity separately, so as to reduce the cross-infection of the disease of the individual sows so that the mother antibodies of the piglets The same level, laying a good foundation for the piglets' immunity, improving the health and production level of the herd.
First litter sows generally carry more pathogenic microorganisms, such as immunity to E. coli is not strong, and often with blue ear disease virus, Mycoplasma hyopneumoniae, etc., piglets are more prone to yellow and white diarrhea. Second-parity sows have better immunity and disease resistance than first-parity sows. The third-term sow also had stronger immunity and disease resistance than the second-stage sow. Since the higher parity sows have been injected with vaccines, the immunity and disease resistance to the general diseases are stronger. In addition, the sows of the same parity are raised together, and the antibody level of the sow and the sow are in good agreement. The antibody level of the piglets produced is also the same, that is, the immunity and disease resistance to various pathogens are consistent. Not easy to attack. At the same time, such farms are easy to remove a variety of pathogenic microorganisms. Therefore, the sows kept in separate fetuses have better health status, and the piglets have lower disease infection rates and better production performance.
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