Increasing the number of litters per year for sows
Increasing the number of litters per year of sows can greatly increase litter size and increase pig income. The following methods can be used in the breeding process:
I. Early weaning
Piglets are suitable for weaning at 3-5 weeks of age. Shortening the lactation period can shorten the production cycle and increase the number of litters per year.
Second, improve the estrus period conception rate
If the sow has not been registered after estrus, she has to wait 21 days for estrus before she can be bred. This not only increases her feeding costs but also lengthens the production cycle. The higher the conception rate during estrus is, the more favorable it is to increase the number of litters per year. In production, measures such as improving boar semen quality, sow real-time breeding, and applying hormones are used to increase sow fertility in the estrus period.
Third, lactation breeding
27-32 days after sow is a estrus period of normal estrus and ovulation. It can be used for breeding. Weaning can also be done 3-7 days after weaning. However, the mating of the lactating period must ensure that the full price of the sow can be maintained to ensure the success rate of breeding, so as to achieve the purpose of increasing the number of litters per year of the sow.
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