Sow-born fetus refers to the phenomenon that the pig embryo died early and was absorbed by the sow. The sow reached the stage of production, but there was no litter, and then nothing was seen. This was because the pig embryo was killed after the early death. The sows are absorbed, which is what the farmers often say. This phenomenon and the mummy, stillbirth and abortion have become the four major ills affecting the breeding of pig farms. What is the cause of sow births? How to prevent it?
First, the cause of sow birth
The reason for the birth of the sow is the lack of some nutrients necessary for fetal development, the embryo development stops or the quality of the egg is not good or the timing of the breeding is not mastered, the egg is too aging, the fertilization is bare, the embryo cannot develop normally and die. , absorbed by the mother. In addition, the sow's lack of sex hormone secretion, or improper medication and frightened are likely to cause sows. In the production, according to the actual situation, take corresponding countermeasures.
Second, the prevention and treatment measures for sows
1. Strengthen the feeding management of empty sows. Add protein and energy feeds 3 to 14 days before breeding, and add minerals and vitamins to enable them to enter the best state of breeding faster. For the empty larvae with poor sensation, the breeding method of breeding and breeding is adopted, that is, the nutrition is strengthened for a long period of time before breeding, so that it can restore lyrics and physical strength as much as possible, so as to facilitate breeding, conception, and miscarriage. Increase the birth rate.
2, timely breeding sow estrus from extreme excitement to relatively quiet, willing to accept the boar to climb or flatten the sow's waist, the sow is best when standing still. For the sake of insurance, the breeding is repeated 8 to 12 hours after breeding.
3, improve feed quality sows during pregnancy, feed quality should be good, to prevent the use of mildew, pollution or frozen feed to feed sows, otherwise it is prone to food or pesticide poisoning, light will cause embryotoxic death, heavy It affects the life safety of the sow.
4, regulate endocrine 7 days after breeding, each sow intramuscular injection of progesterone 30 mg, can effectively reduce embryonic death and prevent sows from developing tires.
5, disease prevention If the sow suffers from the birth canal disease, such as vaginal uterine fallopian tube inflammation, pathogenic microbial invasion affects embryonic development, embryo attachment is difficult, must first treat the birth canal disease, and then breed and then reproduce.
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The above are the causes and prevention measures of sows. The sows are a difficult problem in the process of raising pigs. Pig farmers must scientifically breed and pay attention to avoid the occurrence of birth defects. I hope the above can raise pigs. The households are helpful.
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