During the cold season, appropriate feeding of some cold-resistant feed can strengthen the body metabolism of livestock and poultry, enhance their physical fitness, increase their resistance to disease, and relieve cold stress, thus promoting the growth and development of livestock and poultry. Common cold-resistant feeds are: 1. Distillers' grains include 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 feedâ€. It can improve digestion and blood circulation. , expand the body surface blood vessels, produce a warm feeling and so on. In winter, the effect of cold stress is obvious. Distiller's grains are suitable for feeding rabbits, pigs and cattle, especially for beef cattle. Brewer's grains are suitable for feeding chickens, ducks, pigs and cattle. Both of them have unfavorable effects on fetal and male functions, so they should not be used for pregnant women and grazing animals. 2. The root barks of root bark vegetables contain minerals that can produce warming effect. When used as feed, they can enhance the cold resistance of livestock and poultry; celery root, barnyard root, spinach root, cabbage root and other vegetable waste, and carrots Roots such as potatoes and sweet potatoes can be used as cold feed. When using this kind of feed, be sure to keep its skin. 3. Soybeans are warm, sweet and fry, and are warm-fed. They contain 37.9% crude protein, and are both excellent vegetable protein feeds and cold and warm feeds. 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. 4. Meaty lamb and dog meat produce high calories, which is the preferred cold-resistant feed for carnivorous and omnivorous livestock and poultry in winter. 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 cold-fading animals in winter: salt-free shrimp can be used directly, and salt-dried shrimps need to be immersed in salt. application.