How to prevent and cure the sow false pregnancy? What are the methods for distinguishing between true and false pregnancy?
Sow pregnancy often encounters false pregnancy imagination, why? It is understood that the sow pseudo-pregnancy is an estrus breeding, there is a clear return to the disease, leading to the appearance of pregnancy. And the sows are pregnant for more than 100 days, and they have to lose a lot of feed. If the fake pregnancy is so much loss to the farm, you must pay attention to the breeding process. Here are some ways to identify the true and false pregnancy of sows.
1. According to the estrus cycle
Under normal circumstances, the sow estrus breeding, experienced an estrus cycle (18 ~ 25 days) no longer estrus, can be initially judged to be pregnant. This method is especially true for sows with normal estrus cycles.
2, according to the internal characteristics of the sow and the new method of motion identification
After sow breeding, the sows said that greed, snooze, lyric rejuvenation, gentle personality, be careful, the external light shines close to the body, the abdominal circumference gradually increases, the vulva is boring, shrinks into a line, and the tail hangs down. After 18 to 25 days, the sow did not express estrus and was able to judge that the sow was pregnant. The use of boars without resentment can further prove that they are pregnant.
3, according to the conversion of the vulva diagnosis
After the sows are bred, the joints under the vulva are gradually expanded and closed, and they are obviously upwards, indicating that they have been pregnant. After 10 days of breeding, if the vaginal color turns white, and it is accompanied by a thick liquid, it is not wet, indicating that it has been pregnant.
4, see the teat method
After 40 days of sow breeding, carefully check whether there is a red circle at the root of the teat, and a red circle is pregnant. There are several nipples with red circles, which indicates that this sow may produce several piglets (this method does not apply to Landrace pigs).
5, rectal palpation
After disinfection, the hand is inserted into the rectum of the sow, and the feces in the rectum are taken out and the uterus is touched. Pregnant sows have amniotic fluid in the uterus, uterine artery pulsation weakness; no pregnant sow uterus without amniotic fluid, poor elasticity, uterine artery pulsation is small. This method has an accuracy rate of over 95% for large sows.
Everyone knows that raising sows is for the production of piglets. If the sows have low birth rates, the loss of the farms will be very serious. Therefore, in the breeding process, we must master the method of judging whether the sow is pregnant, and check out the empty pigs as soon as possible, and replenish them in real time to avoid empty arms.
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