1. Air, sunshine, soil, straw mat feed, exercise, mood, epidemic prevention, stress care, closed piggery, especially in winter greenhouses in northern China, excessive ammonia will reduce the resistance of pigs. Second, there is not enough sunshine. If you feed more calcium to pigs, they will also be short of calcium. Everything grows on the sun. There must be enough light in the pigsty. Third, the nature of local pigs is to dig the soil for food. At the same time, pigs eat dirt. Feed the pigs with soil regularly. Fourth, straw-padded pigs have the habit of picking grass and making nests before labor. Therefore, it is better to sleep on the mat grass, whether it is a nursing pig or a pregnant pig. 5. Feed moldy feed must not be fed to pigs, and the diversity of feed should be ensured when conditions permit. Among them, fish meal and green feed are essential. I use more than an acre of fertile land to grow grass and feed sows. Sixth, exercise opens any book about raising pigs at home, and the chapter on sow breeding mentions sow exercise. But we have several pig farms that let the pigs out of the pigsty and provide them with free walking space. I built a sow playground, and regularly and irregularly drove several or more sows to the playground to bask in the sun, eat some fresh soil and breathe fresh air. I'm happy to run around in it. Young people associate with empty sows. I stayed in it for several years and finally came out. What a good mood. As the saying goes, life lies in exercise. My main idea of providing pig resistance is to make pigs exercise more. Seven, the artistic conception is humanized. Think about whether pigs can eat and live comfortably. Trapping a pig in a narrow cage (such as a positioning bar delivery bed) can keep the pig from getting angry and its resistance will not decrease. Hearing the cry of our vaccination for piglets, can sows not feel distressed or sad? Eight, epidemic prevention, my back sow is pseudorabies, small. Classical swine fever. Adult sows only do classical swine fever seedlings. Every time the vaccine is injected, the pig's defense system will be awakened. But frequent and intensive vaccination will cause immune paralysis or confusion in pigs. Nine, moderate pressure is good for pigs. My pregnant sow is kept in the shed late every autumn and winter. Generally, the lowest temperature is minus 13- 15 degrees, and the highest temperature is around minus 5 degrees. The sow has been wintering in the bare pigsty with the lowest temperature of minus 19 degrees (the lowest temperature here this year is minus 23 degrees). My idea is to use cold stress to improve the resistance of pigs. But at the expense of feed. X. Health preservation The above is my whole health preservation plan for raising pigs. I don't know much about TCM health preservation. But antibiotic health care is absolutely not desirable. Antibiotics are our last resort against bacteria. The last trump card. Don't always show your cards to others, you will be easily defeated.