How to observe the health status of pigs at ordinary times

In the whole process of pig production, pigs may have infectious diseases at any time. Once it happens, the bigger the scale, the heavier the loss. Therefore, it is very important to do a good job in the health examination of pigs, find subclinical symptoms in time, control the epidemic situation in the early stage and eliminate infectious diseases in the bud. 1. Observe pigs. Breeders should observe their pigs at any time and report to veterinarians or technicians in time if any abnormality is found. Pig farm technicians and veterinarians patrol the pigs at least 2-3 times a day, and often get in touch with the breeders to exchange information in order to master the dynamics of the pigs. When observing pigs, you should be careful and master the skills, timing and methods of observation. In production, we can use "three looks", that is. Look at the spirit at ordinary times, look at the appetite when feeding, and look at the feces when cleaning. "And we should consider the pig's age, sex, physiological stage, season, temperature, air, etc. , focused and purposeful observation. If any abnormal situation is found, it should be analyzed in time to find out the reason and take measures to solve it as soon as possible. If it is a common disease, symptomatic treatment or elimination should be taken. If it is a serious infectious disease, it should be culled immediately, the body should be properly disposed of, and emergency disinfection and immunization measures should be taken to prevent its spread. Eliminating abnormal pigs in time not only reduces the consumption of materials and drugs, but also helps to maintain the safety of the whole pig farm. 2. Measurement statistics. A specific variety or hybrid combination needs a specific level of feeding management and shows a specific level of production. Through measurement and statistics, we can know whether the feeding management level is appropriate and whether the health of pigs is in the best state. Poor feeding and management can not give full play to the maximum genetic potential of pigs, but also reduce the health level of pigs. The productivity level of pigs is a barometer reflecting the quality of feeding management and health status. For example, the low conception rate and litter size of pigs are often related to poor feeding technology, improper feeding management and some diseases; Low birth weight is related to sow malnutrition during pregnancy; 2 1 day-old piglets have small litter weight and poor uniformity, which are related to insufficient breast milk, late or improper feeding, bad environment or disease onset; The low daily gain and poor feed reward of pigs may be due to some chronic diseases hidden in pigs or improper feeding management. 3. Autopsy of sick pigs. It is very important to dissect the dead pigs in clinic. By dissecting sick pigs, we can observe whether there are lesions in various organs and tissues or the types and degrees of lesions, so as to understand the types and severity of diseases in pigs. 4. Antigen and antibody monitoring. Regular examination and determination of antibody levels in serum and body fluids is an effective way to understand the immune status of animals. There is an antibody in animal serum, which indicates that the animal has been in contact with homologous antigen. The appearance of antibody means that the animal is sick or has been sick in the past, or the vaccination of the animal has been effective. If the antibody level drops, it means that these antibodies may be infectious diseases or residual antibodies after vaccination. Determination of antibody after vaccination can confirm the effectiveness of artificial immunization and provide reference for future vaccination. After pregnant sows are vaccinated, piglets can obtain maternal antibodies by eating colostrum. Determination of maternal antibody of piglets can not only understand the immune status of piglets, but also be an important basis for determining when piglets will be vaccinated again. Techniques used to check antibodies can also check and identify antigens and diagnose diseases.