In the cold season, appropriate feeding of some cold-resistant feed can enhance the body metabolism of pigs, enhance physical fitness, increase resistance to disease, and relieve cold stress, thus promoting the growth and development of pigs. Commonly used cold-resistant feeds are as follows:

Distillers' grains. Including distillers' grain and brewer's grains, in addition to being rich in protein and minerals, it also contains a certain amount of ethanol, which has a high heat content and is usually called “fire feed”. It can improve digestive function, strengthen blood circulation, and expand body surface. Blood vessels, warm feelings and other effects. In winter, the effect of cold stress is obvious. Both of them have unfavorable effects on fetal and male functions, so they should not be used for pregnant women and grazing animals.

Root bark. The root bark of vegetables contains minerals that can produce cold-preventing effects. When used as feed, it can enhance the cold-resistance of farmed animals. Vegetables, such as celery root, alfalfa root, spinach root, and cabbage root, as well as roots such as carrots, potatoes, and sweet potatoes, can be used as cold feed. When using this kind of feed, be sure to keep its skin.

Food category. Soybeans are sweet and warm, fried with hot, warm feed, contain 37.9% of crude protein, both excellent vegetable protein feed, but also cold and warm feed. Black beans contain 36.68% crude protein, sweet nature, sweet, fried very hot, is a good cold warm feed. Barley is warm, salty, warm, and has good ripening effect. In addition, rice and straw also belong to warm feed.

Meat category. Lamb and dog meat produce high calories, which is the preferred warmth and cold-resistant feed for winter carnivorous and omnivorous livestock and poultry. Animal liver contains more iron (the animal is particularly cold when it is deficient in iron), and it is easy to absorb. In winter, it is appropriate to feed some animal livers to livestock and poultry, and it can supplement iron and keep warm. Freshwater prawn is warm and sweet, and it is a high-calorie feed. It has the effect of strengthening kidneys and impotence, and strengthening male functions. It is suitable for animals that suffer from cold and cold in winter. The salt-free shrimps can be used directly. After salt-dried shrimps need to be immersed in salt, they must be salted. application.

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