The problems that are more likely to occur in postpartum sows are mainly low milk, refusal to breastfeed, and refusal to eat or reduce feed intake. Why does this happen in sows after childbirth? What should I do? The reporter interviewed Gan Yuan of the Major Epidemic Prevention Research Laboratory of the Institute of Veterinary Medicine of Jiangsu Academy of Agricultural Sciences and Liu Chun, a technician of the Xiaomeishan Pig Breeding Center, to learn about the situation.
Sows have less postpartum milk
"The phenomenon of less milk in postpartum occurs in sows with a longer birth or longer life." Gan Yuan said that the sows secreted by postpartum are compared with the sows of the local breeds. Less, after this happens, the protein content in the feed should be increased first, and the sow milk production can be increased by feeding raw eggs and soy products. In addition, if the breast is red and swollen, it may be caused by insufficient milk in the mastitis.
"Because the sow 'milk' has a certain regularity, and most of it accumulates in the milk pool, it is inaccurate to judge whether the sow's lactation is sufficient by the milk output of the squeezed nipple." Liu Chun will say that it should pass Determine if the piglet is full enough to determine if the sow's milk is sufficient. Although the secretion of postpartum milk in sows is affected by physiological factors, local pigs may have insufficient milk supply after about 1 week due to the large number of litters. For example, Xiaomeishan pig can produce more than 20 heads in one child. With the growth of piglets, the sow milk must not meet the growth and development of the piglets after about 1 week. At this time, the piglet open feed should be supplied in advance. For sows, lactation can also be promoted by feeding soybeans, green fodder, and milkweed.
Sows postpartum antifeeding
"It is normal for 2 weeks and 3 days before sows to eat or reduce food intake for 2 to 3 days after birth, and sows can use some antibiotics for anti-inflammatory on the first day after delivery." Liu Chun will say that normal The sows produced can recover their appetite 4 to 5 days after delivery. If the sow has not resumed appetite 4 to 5 days after delivery, it may be caused by the disease, and there will be other clinical symptoms and coping treatment. However, sows that normally produce piglets and have a higher survival rate for piglets are less likely to suffer from food refusal. During the postpartum recovery of appetite, the feed is mainly fed with some bran water and a small amount of salt, green fodder, etc. to adjust the internal environment of the sow and promote the recovery of the sow's physical energy.
In addition, sows should be replaced with high-protein, high-energy breastfeeding feeds when they are on the bed about 7 days before delivery to meet the energy consumption and postpartum lactation needs of the sows.
Sows postpartum refusal
“The sow's postpartum refusal to feed is also more common in the first-born sow.†Gan Yuan said that it is usually caused by the lack of trace elements in the feed of the sow or the biting of the piglets. Therefore, the piglets should be broken in time, the canines should be cut off to avoid stimulating the nipples of the sows, causing the sows to refuse to feed. Liu Chun will also say that the phenomenon of refusal of sows is mainly caused by the poor motherhood of sows. The maternality of local breeds is generally better, such as Taihu pigs; the maternal nature of external pigs is relatively poor, especially the first birth sows. The first breastfeeding can be assisted manually if necessary.
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