In spring, when the temperature is hot and cold, bacteria and viruses are prone to breeding. At this time, livestock and poultry are often lean and disease resistance is reduced. Therefore, animals are prone to various diseases in the spring each year. There are seven types of infectious diseases that are prone to pigs in spring: pigs. The swine fever is also called rotten bowelworm. It is an acute, hot and septic infection caused by swine fever virus. Pigs of different breeds, sex and age can infect the disease. In areas where the disease is common or in threatened areas, the breeding sows are vaccinated once before or after mating; the piglets are first exempted from 20 days old to 25 days old, and exempted from 50 days old to 60 days old. In non-epidemic areas, gilts should be immunized once before or after mating; boars should be immunized once in spring and autumn; piglets should be immunized once weaned. In addition, piglets can be immunized ahead of time. ?? Transmissible gastroenteritis. The disease is caused by the porcine transmissible gastroenteritis virus, which is a contagious infectious disease characterized by vomiting, watery diarrhea, and dehydration of piglets within 2 weeks of age. The mortality of diseased pigs up to 10 days of age was 50% to 100%. The immunization method is to inject pregnant gilts with attenuated virus vaccines for infectious gastroenteritis to make the piglets passively pass through breast milk. ?? Swine influenza. The disease is an acute, highly contagious disease caused by the mountain swine influenza virus. The incidence of swine regardless of breed, sex and age, mostly occurred in the spring, often sudden onset, and quickly spread the entire herd. There is currently no effective vaccine for this disease. To prevent this disease, we must strengthen the disinfection of the pig house and keep the pig house clean and dry. Piglet paratyphoid. The disease is an infectious disease caused by Salmonella. It mostly occurs in piglets from 2 months to 4 months of age. Pigs less than 1 month old and 6 months old rarely occur. In non-epidemic areas, piglets should be vaccinated against paratyphoid attenuated lyophilized vaccines after weaning; infected piglets from 20 days to 30 days of age should be given first dose of paratyphoid formaldehyde vaccine and revaccinated at intervals of 5 days to 8 days. Piglet E. coli disease. Caused by pathogenic E.coli, including piglet jaundice (commonly found in piglets from 1 day to 3 days of age), piglet white lice (prone in 10 days to 30 days old piglets), edema of piglets (mostly before and after weaning Healthy piglets). The immunization of piglet jaundice is to inject intramuscular injection of 2 ml of piglet oil seedlings to the pregnant sow 40 days before delivery. The immunization method of the piglet white quail is to give the pregnant sows oral genetically engineered bacteria 40 days before delivery. Seedlings were boosted immunized 15 days before birth. The immunization method for piglet edema disease was to inoculate pregnant sows with inactivated vaccines prepared from pathogenic strains isolated from the pig farm. ?? Pig gasping disease. The disease, also known as porcine mycoplasma pneumonia, is a chronic respiratory infection caused by mycoplasma pneumoniae (mycoplasma), and can occur in pigs of various ages, sexes, and breeds. The sick pigs showed cough and asthma, and the mortality rate was not high, which mainly affected the growth rate of pigs. Porcine asthmatic attenuated vaccines can be inoculated into the thoracic cavity or in the lungs of piglets over 15 days of age. Pigs kept as seedlings can be exempted from 2 months of age to 4 months of age. ??Pulmonary infection. The disease is an acute, hot, and septic infection caused by Pasteurella multocida. Pigs of all ages are susceptible to infection, but the incidence of piglets and shelf pigs is high. Piglets should be injected intramuscularly with attenuated swine attenuated vaccines at weaning, and pigs should be injected with swine fever and porcine combined vaccine in spring and autumn.
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