In many pig farmers there is a misconception that raising sows usually does not require too much nutrition, as long as life can be. In fact, this view is not desirable. The following is a discussion of the issues that cannot be ignored for raising sows for reference. First, the nutrients in the feed are irrational. 1. The energy is low: Some farmers do not know the nutritional requirements of the sows. They still use the traditional pig-raising method, adding water to the rice, and adding rice to the green material, or giving a single concentrate. Sows are too thin and affect sow fertility and production levels. 2, high energy. Some pig farmers use the sows as pigs to feed and feed the pigs to make the sows fat. In addition, there are additives that promote growth in the pig material, which interferes with the self-regulation of the reproductive hormones on the sow and also affects the normal estrus breeding of the sow. The effect of fattening pig feed is to cultivate pigs that prefer eating, quietness, and rapid weight gain. This is different from the sow's cultivation purpose, so the feed used for sows is obviously inappropriate. 3, lack of mineral elements and vitamins. Some pig farmers neglected the mineral elements such as calcium, phosphorus, silicon, and vitamins a, d, e, etc. in the compound feed, resulting in some sows producing dead, teratogenic, and weak litters, and severe postpartum spasms. Second, improper management of sows Some pig farmers do not feed the pigs in the trough, and directly sprinkle the feed on the cement floor to allow the pigs to feed freely. The surface looks simple and convenient, there is enough room for eating, and careful analysis does not feel good. When the pig eats material, the hoofs will step on the feed and bring some dirt and microorganisms. After entering the gastrointestinal tract of the pig, the light will cause malabsorption of nutrients, and the severe ones will cause some gastrointestinal diseases or infectious diseases. . Sometimes when spring and autumn harvests are busy, the feeding of pigs is often not timely, which can lead to prolonged water cuts, which can cause disorders of the gastrointestinal tract function, and may cause pigs to be unquiet and heterophilous. Third, the sow's sensation is too thin or too fat 1. The gilt is too thin or too fat. The weight of the lean can't reach the breeding weight, the overweight estrus, or the estrus is not obvious. It is easy to miss the appropriate time for breeding, resulting in a mismatch, delaying 1-2 periods of love, or being accompanied by fat overweight, surrounded by fat around the ovary, limiting the development of egg cells, resulting in less calving. Due to excessive fat, breast milk has a high fat content. If the colostrum is too thick, the piglets can't digest it. When the fetus is finished, it causes a diarrhea. 2, sows are too thin or too fat. In the lactation process, sows with more litter and more lactation, after weaning, the mother is very thin, and it takes a certain time to reach 7-8 percent of the age. Another phenomenon is that sows with few litters, because they don't add enough nutrients to their diets, gradually overgrow up the surrounding fat. After sow weaning, the estrus has been delayed, affecting the timely mating. Fourth, should be based on the seasons and fetal times and the science of lyrical breeding winter cold, hot summer, the same temperature, the winter heat dissipation, to increase the amount of appropriate materials to increase feed energy. In the summer sports field, shade sheds should be provided, and pigs should be given food to eat. The pig houses should be well ventilated. In terms of parity, after gilts are bred, although they are sexually mature, their bodies are not yet mature. Their own growth and development and the fetus' growth and development require nutrition. It is not the same as a sow, and it has a dual task. Therefore, the gilt level for pregnancy is higher than that of the sows. The kind of irrespective of fetal times, the effect will not be too good. The sows should be carefully reared, single-column feeding, and the amount of daily feeding adjusted according to the situation. After sow mating, the growth and development of fetuses at the age of pregnancy gradually increase the amount of material, and maintain a suitable 7-8 percent of lice. Sows are fed exclusively to the sow’s full-priced feed to ensure adequate protein, energy, minerals, and vitamins. The sows are fed without the moldy corn and the head of the drum. With scientific management, pigs should use feeding troughs to ensure the cleanliness of the feed and prevent pigs from carrying waste into the feed tanks. Feeding regularly will make the pigs develop good conditioned reflexes so that they will grow well.
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