Feeding pigs with raw materials not only saves manpower and financial resources, but also increases pig feed intake and promotes weight gain. At the same time, it can reduce feed consumption and increase feed remuneration, but it must pay attention to the method of feeding.
1, the choice of raw feed can be selected as raw feed feed mainly grass seeds, such as corn, wheat, rice and other processing by-products, such as rice bran, wheat bran and so on. After the above-mentioned feed is cooked, the loss of nutrients is over 13%. However, the dietary feed of soybean seed, such as soybeans, bean cakes, peanut cakes, and bean dregs, contains an anti-trypsin, which can prevent the decomposition of legume protein by pig trypsin. . Therefore, such feeds cannot be fed raw, but must be fed after high temperature treatment.
2, the raw feed method has to pay attention to raw students can be divided into two kinds of wet and dry feed, the ratio of wet feed and water can not exceed 1:2.5, otherwise it will reduce the secretion of digestive juice; reduce the activity of digestive enzymes, affect the digestion of feed For absorption, the optimum ratio should be 1:1. Stir the feed so that water droplets can be squeezed out. Dry feed is fed in powdered form and fed after feeding. The benefits of dry feeding: First, the feed is not easy to degenerate, can be fed for a few days at a time, saving labor; the second is to facilitate the production of compound feed for pigs.
3, raw material to be sterilized raw feed to pigs, should pay attention to washing and disinfection, so as not to infect parasites. The method of disinfection can be soaked with lime water or potassium permanganate solution, the best way is to plant the feed site, without pig manure or with unfermented manure, to prevent egg infection. Rapeseed cakes, cottonseed cakes, fresh cassava, buckwheat, etc., containing certain toxins, must generally be crushed, immersed in water, fermented or ensiled, etc., and other toxins removed before they are fed.
4, raw material crushed should be suitable for raw material crushed particles with a diameter of 1.2 mm -1.8 mm is appropriate, this type of pig to eat up refreshing, large feed intake, long and fast. Diameter is less than 1 mm, when the pig eats, the sticky mouth easily affects palatability, and can easily cause gastric ulcer. The diameter is more than 2 mm, and the rough and palatability is poor. Pigs do not like to eat.
5. The digestive juice is most prosperous when the raw material is fed separately to the pigs when they are hungry. The concentrate feed is rich in nutrients, small in size, less in crude fiber, good in palatability, high in quality, and easy to digest, so it should be selected to feed the concentrate. If the fine green material is mixed and fed, the green material has a large volume and a large amount of moisture, which reduces the digestibility and the absorption rate of the coarse material, and the excessive moisture in the green material can also dilute the digestive juice, thereby reducing the digestive function.
6, the amount of raw feed should be suitable for raw feed to feed the pig, the amount of feed due to different growth stages and production performance of pigs are different. Piglets and finishing pigs are allowed to eat freely. In the case of breeding pigs, it is not necessary to supply them quantitatively. Otherwise, due to overfeeding, fat deposits are affected and breeding is affected. Generally, non-breeding species of boar, the amount of coarse material to be controlled at 2 kg -2.5 kg, breeding period can be fed to 3 kg -3.5 kg. Sows during pregnancy, the amount of fine material daily 2 kg -2.5 kg, breastfeeding 5 kg -6 kg.
7, to provide enough water to dry feed the pig, to supply enough water. The amount of drinking water in winter is 2 to 3 times that of dry feed, 4 times in spring and autumn, and 5 times in summer. In particular, lactating sows and piglets must not be deficient in water, otherwise they will affect the sow’s milk secretion. The water quality should be clean and the water temperature should be warm in winter and cool in summer.
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