Commentary: First of all, it is not necessary to reduce the amount of prenatal food, because the sow's milk is not determined by the amount of feed. If we eat more milk, we will give it more feed, and the quality of milk is not enough. increased? Of course the answer is no.
Second, the sow’s maturation period is not static. If the sow’s date of production is delayed, it will not only lead to poor nutrition of the sows, but also cause fetal dysplasia, and long-term reductions will result in weakness of the sows when they are born. The situation of dystocia will also increase.
Third, the sow has feelings about when she will give birth. When she has symptoms of labor, she will not eat any more. She will not need to make artificial judgments. There will be several signs from the sow's birth signs to actual litters. Hour interval. This time interval is longer than the digestion and absorption of feed; even if there is some undigested absorption, the amount is limited and will not affect the health of the sow.
Therefore, to remind everyone not to affect the normal rules of life (sows) in order to prevent these unwarranted problems.
Point 2: “In order to reduce the incidence of mastitis and other diseases in weaned sows, sows must be reduced before weaningâ€
Practice has proved that this is wrong.
Commentary: First, there is no milk pool in the sow's breasts, and milk can not be stored. Therefore, mastitis is not induced by storing too much milk. Therefore, the most effective way to make dry sows of weaned sows is to allow sow's milk to accumulate in their breasts. The accumulation of breast milk in the mammary gland causes an increase in the internal pressure of the mammary gland, thereby inhibiting the formation and secretion of more milk. On the other hand, weight loss will also occur through the methods of cutting materials, cutting water, and cutting off materials. Weighing too much at weaning and feeding too little on the day after weaning are one of the main reasons for delays in ovulation.
In addition, the domestic Hu Bin and other experiments showed that: Although the sow before weaning reduction of breast swelling after weaning is lighter, but the sows in the material reduction and no reduction group did not have mastitis; while the sow is not reduced before weaning The interval between weaning and estrus can be shortened; more importantly, the number of litters and live births of sows in the non-reducing group are increased. Therefore, there is no scientific basis for the feed-feeding mode of weaning sows before weaning, which will lead to prolonged weaning to estrus intervals and reduced litter size.
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