Six strokes to prevent sow fetal
The early death of swine embryos and their absorption by sows is commonly referred to as chemical fertilization. Fertilization is one of the main reasons for the low birth rate of sows, and necessary measures must be taken to prevent them.
Strengthen the feeding and management of empty sows 3-14 days before breeding, increase protein feed and energy feed, add minerals and vitamins at the same time, so that the sows enter the best state of breeding sooner. For empty sows with poor lyricism, nutrition can be strengthened for a relatively long period of time before mating, and lyrical and physical strength can be restored as far as possible so as to facilitate breeding, abortion, and miscarriage, and increase litter size.
Timely mating sow breeding schedules are best during the 22-24 hours after the start of oestrus. From the point of view of estrus, the sow has changed from extreme excitement to quietness, vaginal discharge of silky mucus, and hand pressure on the dorsal lumbar sow (status reflex) when breeding best, so that the mortality rate of the embryo is low, The farrowing rate is high.
Regulation of endocrine The injection of progesterone 30 mg intramuscularly per sow after 7 days of mating can effectively reduce embryonic death and prevent sow fetalization.
Improve the quality of feed Sows during pregnancy, feed quality is better, it is forbidden to use mildew, pollution, frozen feed feeding, or prone to food or pesticide poisoning, mild embryonic poisoning caused by death, while affecting the sow's life safety.
Controlling ambient temperature sows in the first week of pregnancy, when the ambient temperature is as short as 32°C-35°C for a short period of time (24 hours), embryonic death increases, and breeding of boars with heated boars can also result in embryonic death. Therefore, it is best to control the ambient temperature between 15°C and 25°C.
For sows that are not exercised for a long period of time, the embryo mortality is higher than that of regular exercise. The sow should exercise in a free movement, but should prevent the sow from falling. In addition, it is necessary to prevent and cure a series of reproductive system diseases in a timely manner.
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