Sow chemical birth is something else?

After the sow was conceived, she did not give birth until she was born, and she did not see any excretion. This was because the early pregnancy was absorbed by the mother's uterus. This is what the masses called a fetus.
First, the cause of the sow chemical fetus:
Caused by the lack of maternal fetal growth due to the necessary nutrients, embryo growth or egg quality is not good or unable to grasp the timely mating, the egg is too old, stubbornly fertilized, the embryo can not be normal development and death, absorbed by the mother. In addition, the lack of secretion of sex hormones in sows, improper use of medicines, and frightened animals can all result in the formation of sows. In the production, according to the actual situation, take appropriate response measures.
Second, the prevention and control measures for sow chemical tyres:
1. Strengthen the feeding and management of empty sows. Add protein feed and energy feed 3-14 days before mating, and add minerals and vitamins at the same time to make it enter the best state of breeding sooner; for empty sows with poor lye, breeding methods with excellent breeding can be adopted. That is, nutrition is strengthened for a relatively long period of time before mating, so that it can restore sensation and strength as much as possible to facilitate breeding, abortion, and miscarriage, and increase litter size.
2, timely breeding. The sow’s estrus changes from extreme excitement to quietness and she is willing to accept the boar to cross or flatten the sow's waist, and the sow is best when she is still. 8 - 12 hours after breeding for breeding and then repeat breeding.
3, improve feed quality. Sows during pregnancy, feed quality is better, to prevent the use of mildew, pollution, frozen feed sows, or prone to food poisoning or pesticide poisoning, light can cause embryo toxicity death, the weight of the sow will affect the life safety.
4, regulate endocrine. Seven days after mating, 30 mg of progesterone was injected intramuscularly into each sow, which effectively reduced embryonic death and prevented sows from becoming fetuses.
5. Disease prevention and treatment. If the sow suffers from birth canal disease, such as suffering from inflammation of the vaginal uterus tubal, invasion of pathogenic microorganisms that affect embryonic development, difficulty in attachment of embryos, must first treat the birth canal disease, and then breed and reproduce after curing.

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