Prevention and Treatment Methods for Porcine Polyserositis and Arthritis

1. Preventive measures

(1) To prevent the occurrence of this disease, first of all, feeding management should be strengthened, and the veterinary hygiene and disinfection system of the pig farm should be strictly implemented to avoid or reduce the occurrence of stress factors, such as preventing sudden changes in feeding conditions and infection by other pathogenic microorganisms.

(2) When stress occurs, preventive doses of antibiotics (such as amoxicillin, florfenicol) or sulfonamides can be given to the pig herd in advance, which can play a role in preventing the occurrence of this disease.

(3) When newly introducing a pig herd, they should first be raised in isolation, and an adaptation period of about 2 to 3 months should be maintained, so that pig herds that have not been vaccinated but are raised under conditions where infection is possible can establish protective immunity.

(4) In pig farms where this disease is prevalent, inactivated vaccines against Haemophilus parasuis can be used for vaccine immunization, which is an effective measure to prevent the occurrence of this disease. It is best to use strains isolated from the farm itself to prepare inactivated vaccines, so as to ensure to the greatest possible extent that the serotype of the vaccine strain is consistent with the prevalent strain, thereby obtaining the best immune protection effect. Maternal antibodies have a passive immune protective effect on newborn piglets, and this plays a very important role in preventing the occurrence of this disease. After sows are vaccinated, they can provide protective immunity to piglets within 4 weeks of age. Inactivated vaccines of the same serotype can be used to immunize piglets.

2. Treatment

After the pig herd develops the disease, treatment should be carried out promptly, and treatment should be administered to the entire herd. Drugs such as ampicillin, penicillin, gentamicin, neomycin, tetracycline, and cephalosporins can be used. The dosage should be sufficient, and for affected pigs, oral or injection routes have better effects. It should be noted that many strains of Haemophilus parasuis are resistant to antibiotics. Therefore, sensitive drugs should be selected during treatment. At present, cephalosporins (such as ceftiofur) have relatively good effects.