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What to Do About Embryo Resorption in Sows? Five Prevention and Treatment Methods to Help You Solve It

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In pig farming, a low farrowing rate in sows is a common problem. Besides a low fertilization rate, early embryonic death during development followed by resorption by the sow (commonly known as embryo resorption) is also an important cause. This difficult problem can be solved through the following methods. 1. Strengthen the feeding and management of open sows: 3 to 14 days before mating, increase protein feed and energy feed, and add minerals and vitamins at the same time, so that they enter the optimal mating state more quickly; for open sows in poorer body condition, a longer period before mating

In @#@227@#@ production, a low farrowing rate in sows is a common problem. Besides a low fertilization rate, early embryonic death during development followed by resorption by the sow (commonly known as embryo resorption) is also an important cause. This difficult problem can be solved through the following methods.

1. Strengthen the feeding and management of open sows: 3 to 14 days before mating, increase protein feed and energy feed, and add minerals and vitamins at the same time, so that they enter the optimal mating state more quickly; for open sows in poorer body condition, strengthen nutrition over a longer period before mating, so that they recover body condition and strength as much as possible, which helps with mating, conception, and maintaining pregnancy, and improves the farrowing rate.

2. Timely mating: the best mating time for sows is 22 to 24 hours after the onset of estrus. In terms of estrus symptoms, mating is best when the sow changes from extreme excitement to relative quiet, white stringy mucus flows from the vagina, and the sow stands still when her back and loins are pressed by hand. In this way, the embryo mortality rate is low and the farrowing rate is high.

3. Regulate the endocrine system: 7 days after mating, inject each sow intramuscularly with 30 mg of progesterone, which can effectively reduce embryonic death and prevent embryo resorption in sows.

4. Improve feed quality: during pregnancy, sows should have good-quality feed. Strictly prevent feeding sows moldy, contaminated, or frozen feed, otherwise food or pesticide poisoning is likely to occur. In mild cases, it causes embryonic poisoning and death; in severe cases, it affects the sow's life safety.

5. Control the ambient temperature well: during the first week of pregnancy in sows, when the ambient temperature reaches as high as 32 to 35°C for a short period (24 hours), embryonic death increases; likewise, mating with a boar that has been exposed to heat can also cause embryonic death. Therefore, it is best to keep the ambient temperature between 15 and 25°C.

In addition, a series of reproductive system diseases should also be prevented and treated in a timely manner.

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