Detailed Explanation of Full-Course Immunity and Health Care Technology for Commercial Pigs

In recent years, infectious diseases in pigs have increased, conditions have become complex, treatment has become difficult, and mortality rates have risen. In particular, the highly pathogenic blue ear disease (highly pathogenic PRRS) that occurred in 2006 swept across half of China within six months, causing severe losses to China's pig industry. Many farmers lost everything and were ruined. Under this situation of high disease incidence, it is very important to do a good job in pig immunity and health care and to take preventive measures. Many farmers who have newly joined the breeding industry also do not know how to carry out vaccine immunization and medication-based health care. Below is a discussion of: vaccine and medication immunity and health care technology for pigs.

1. Vaccines injected before sow mating. To prevent sows and fetuses from being infected with swine fever and porcine blue ear disease (PRRS), sows must be injected with swine fever vaccine and blue ear disease inactivated vaccine (including highly pathogenic blue ear disease vaccine) separately 1-2 weeks before mating. In March-April before summer arrives, sows must also be injected with porcine Japanese encephalitis vaccine before mating.

2. Vaccines injected before farrowing. To prevent newborn piglets from being infected with pseudorabies, parvovirus, yellow and white scour, epidemic diarrhea, and transmissible gastroenteritis, it is best to inject pseudorabies inactivated vaccine, K88-99 trivalent or quadrivalent inactivated vaccine, and epidemic diarrhea and transmissible gastroenteritis combined inactivated vaccine separately 3-4 weeks before farrowing. First-parity sows and sows within the third parity must also be injected with parvovirus inactivated vaccine before the expected farrowing date. At most 3 types of vaccine may be injected each time, and only after an interval of 5-7 days may vaccines be injected again.

3. Lactating sows: Antibiotics must be added to the sow feed for 1 week before and 1 week after farrowing, such as adding 1000 grams of florfenicol + lomefloxacin per ton of feed for prevention; or adding 125 grams of 80% tiamulin per ton + 300 grams of chlortetracycline per ton + 150 grams of amoxicillin per ton, to reduce pathogens excreted by sows contaminating the farrowing house and cut off horizontal transmission of disease from sows to piglets.

4. To prevent newborn piglets from iron and selenium deficiency, inject iron dextran at 3 days of age, 0.2 ml/kg body weight.

5. "Three-injection" health care. To prevent piglets from suffering gastroenteritis and respiratory bacterial diseases during lactation, "three-injection" health care must be carried out, namely injecting long-acting oxytetracycline once at 0.15-0.2 ml/kg body weight at 3, 7, and 21 days of age respectively.

6. Piglets at 20-30 days of age. At 20 days of age, swine fever vaccine must be injected, 4 doses per pig; at 25 days of age, live blue ear disease vaccine and highly pathogenic blue ear disease inactivated vaccine must be injected (it is best to give a booster 14 days later). At 30 days of age, inject 1 ml of pseudorabies inactivated vaccine; if a live vaccine is used, another booster is needed after weaning.

7. From 1 week before weaning to 4 weeks after weaning of piglets, to prevent stress and bacterial infection, add doxycycline or florfenicol, 100-125 g per ton of feed, or 500 g of tilmicosin per ton mixed into feed, for 5-7 days continuously, withdraw for 5-7 days, then use for another 5-7 days, for 2-3 cycles in total, while also providing electrolytic multivitamins in drinking water. In addition, piglets should be injected with Paijitai (immune peptide) to enhance immunity.

8. At 35 days of age for piglets, to prevent piglet paratyphoid, piglet paratyphoid vaccine may be given orally, and again orally at 65 days of age. Farms with no epidemic or with few occurrences may not use it.

9. At 60 days of age for piglets, swine fever vaccine must be injected, 4 doses per pig for cell vaccine, 2 doses per pig for tissue vaccine.

10. At 70 days of age, it is best to inject erysipelas and pasteurellosis combined vaccine to prevent the occurrence of pasteurellosis and erysipelas.

11. At 12-13 weeks of age, add medication-based health care. Mix 250 g amoxicillin, 100 g tiamulin, and 100 g doxycycline into 1 ton of feed, stir evenly, and use continuously for 2 weeks to prevent bacterial infection. In addition, to increase piglet immunity, astragalus polysaccharide should also be mixed into feed at this time and fed continuously for 2 weeks.

12. At 17-18 weeks of age, also to prevent bacterial infectious diseases, medication-based health care similar to that at 12-13 weeks of age should be carried out. For example, mix 100 g florfenicol, 50 g alexin, 200 g astragalus polysaccharide, and electrolytic multivitamins into 1 ton of feed and use continuously for 2 weeks.

In hot seasons, to prevent high fever disease, mixing 200 g Jiakang + 500 g Antai into 1 ton of feed has a good preventive effect; if treating an outbreak, mix 400 g Jiakang + 1000 g Antai into 1 ton of feed and administer to the whole herd continuously for 1-2 weeks. At the same time, affected pigs should be injected intramuscularly with tylosin + houttuynia injection at 0.2 ml/kg body weight, together with intramuscular injection of Paijitai or interferon and antiviral No. I.

13. Regardless of whether pigs are large or small, weaned pigs, or breeding pigs, foot-and-mouth disease vaccine must be injected every year when the cold season arrives, and again in spring. The vaccine is supplied free of charge by the veterinary station.

14. Regular deworming. Deworm twice at 20-30 kg and 50-60 kg body weight. Give ivermectin orally or inject Miechongding once intramuscularly.

The above has introduced in fairly detailed terms the vaccine and medication immunity and health care that pigs need throughout their lives from fetal birth to fattening and sale. As long as farms strictly carry this out, together with hygiene and disinfection measures, disease incidence can be greatly reduced or even eliminated, @#@227@#@ the industry can also develop normally, pork can also be supplied normally, pork prices can be stabilized, the common people can benefit, and contributions can also be made to building a harmonious society.