First, the performance of transport stress After the piglets arrived on the field, they were apathetic and their appetite decreased. On the 2nd day of the scene, a few diarrhea occurred in the piglets, after which the diarrhea gradually increased and peaked after 5 to 10 days for 10 to 30 days. The smaller the pigs, the faster and more severe the onset of disease, the longer the diarrhea, dehydration, weight loss, rough fur, ear tip, extremities cyanosis, and some piglets body temperature increased to 40 °C ~ 40.5 °C. Sick pigs often have concurrent infections. Common concurrent infections are swine fever, mild swine fever, streptococcal disease, pseudorabies, and circovirus infections. Second, the cause of stress Piglets are too small, the lighter the piglets are, and the worse the disease resistance is, the more serious the disease is, the higher the mortality is, especially the piglets less than 8 to 10 kg, which are often just weaned, and the weaning stress will cause the piglet resistance to decrease significantly. Incidence; various stimuli in the trafficking process, such as catching, loading, transporting, unloading, grouping, etc., make the pigs in a state of stress for a long time is also an important cause of morbidity; improper feeding method, the digestive power is reduced after the piglets arrive at the scene. If the diet is fed too early or if it is fed with high dietary soybean meal, it will cause diarrhea; if the health care measures are not in place, the selected piglets are not immunized and are easily infected by pathogenic microorganisms. If they are not promptly raised, their resistance will easily occur. Diseases. Third, transport stress prevention and control 1. Pig house cleansing and disinfection ahead of time. The pig house is cleaned well before the pig is purchased. The whole house is disinfected with 2% sodium hydroxide solution. After 24 hours, the sodium hydroxide solution is rinsed with water until the ground is dry. 2, understand the local epidemic before buying piglets should understand the origin of the epidemic. In addition, it is necessary to understand the breed and immunity of pigs, and observe the mental status and defecation of pigs. Should buy those who have no tear spots, ruddy skin, bright hair, tail flexible upturned, uniform size piglets. 3, if the long-distance transport of antibiotics before loading, loading each pig before the injection of "de rice first" 3 ~ 5 mL. 4. Disinfect the piglets purchased before the unloading and disinfect the piglets with 100 toxins (1:1,000) or Nongfu (1:200) to kill the pathogenic microorganisms carried by the piglets. 5, reasonable grouping according to the size of the body weight, the best breeding density of 10 to 20 heads / column, 0.8 ~ 1.0 m2 / head. After the piglets enter the stalls, they shall be guarded by dedicated persons to prevent them from biting, and a small amount of sterilized disinfectant may be used to spray the barn houses and the pig body to prevent biting. Training piglets eat, defecation, sleeping three positioning. 6, drinking water and feeding the piglet to rest 30 to 60 min after unloading and then drinking water, drinking water by adding 5% of multidimensional glucose and 0.9% of salt, can also add electrolysis multidimensional, to supplement energy, electrolytes, improve the body resistance. The purchased pigs did not feed on the day and only fed the nutrient solution. They were fed on a small amount for the first 2 days, fed only 5 to 60% of the food at a time. The pigs were hungry, and then slowly increased the amount of feed so as to avoid sudden changes in the feed. Onset. 7. Regularly disinfect the piggery regularly with pig poisoning (1:1000), farm-blessing (1:200) or disinfecting (1:2 000) with the pig disinfection, disinfectant should be used in turn. 8. Doing a good job of prevention and trafficking can suppress the immune response and affect the immune effect. In the first 2 days of pigs, immune regulators such as multivitamin, astragalus polysaccharide, and epimedium extract were added to drinking water for 5 to 7 days to increase the immune effect. After 3 days, each pig was injected with one dose of piglet spleen and one dose of streptococcal vaccine was injected one week later. Antibiotics should not be used for 5-7 days after streptococcal seedlings to prevent immunization failure. 9, timely repelling piglets should be repelled 10 days after the insecticide can be used, intestinal worm clear, 2 per pig, 0.2% ivermectin, add 1500g per insect feed or insect force black, add 500g per 1 t feed . Insecticide after feeding Jianwei San or rhubarb soda tablets stomach, promote appetite. 10. The 5 to 7 days after the strategic administration into the pig is the high incidence of disease, and appropriate medication can effectively control the stress. At this time the drug can be used together with immunomodulators, such as adding 1 g of multi-dimensional 300g of Tetrisulfuron or 1000g of astragalus polysaccharide 500g + azithromycin 500g per 1t of feed, and feed 4 to 5 days continuously to survive the dangerous period. 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