Sows resorbing embryos leads to a low farrowing rate, how can it be effectively prevented?

    Embryo resorption refers to the phenomenon in which pig embryos die early and are absorbed by the sow. Embryo resorption leads to a low farrowing rate in sows, so necessary measures must be taken to prevent sow embryo resorption.

Sows

    1. Strengthen the empty sow:Increase the protein feed and energy feed for sows 3-14 days before mating, and add minerals and vitamins to the pig feed, so that the sow quickly enters the best state for mating. For empty sows in poorer body condition, strengthen nutrition over a longer period before mating, restore body condition and physical strength as much as possible, so as to facilitate mating, conception and pregnancy maintenance, and increase the farrowing rate.

    2. Mate at the right time:It is best to arrange mating 22-24 hours after the sow starts estrus. Judging from the signs of estrus, mating is best when the sow changes from extreme excitement to quiet, a white filamentous mucus flows from the vagina, and the sow stands still when the back and loins are pressed by hand (standing reflex); in this way the pig embryo mortality rate is low and the farrowing rate is high.

    3. Regulate the endocrine system:On the 7th day after mating, inject each sow intramuscularly with 30 mg of progesterone, which can effectively reduce pig embryo death and prevent sow embryo resorption.

    4. Improve feed quality:For sows during pregnancy, the feed quality must be good. It is strictly forbidden to feed moldy, contaminated or frozen feed, otherwise sows are prone to food or pesticide poisoning; in mild cases the pig embryos die of poisoning, and in severe cases the sow dies.

    5. Control the ambient temperature well:In the first week of pregnancy in sows, when the ambient temperature reaches as high as 32°C-35°C for a short time (24 hours), embryo death increases, and mating with a heat-stressed boar can also cause embryo death. Therefore, it is best to keep the ambient temperature between 15°C-25°C.

    6. Appropriate exercise:Sows that do not exercise for a long time have a high pig embryo mortality rate. For pregnant sows, exercise should mainly be free exercise, and the sow must be prevented from falling. In addition, a series of reproductive system diseases in sows must also be prevented and treated promptly.