Porcine asthma, also known as Mycoplasma pneumoniae, is a chronic, contagious disease of pigs caused by Mycoplasma pneumoniae, which spreads all over the world. The main clinical symptoms are gasping and coughing, characterized by the symmetry of the temporal lobe, the sharp leaves, the heart leaf, and the hilar lymph node hyperplasia. The disease occurs only in pigs, and pigs of any breed, sex and age can develop disease. The disease may be an acute outbreak in the newly infected area, mostly based on chronic passage. In recent years, with the rapid development of the aquaculture industry, commercial pigs and breeding pigs have been transported over a long distance, and the spread of swine asthma has become more widespread. Pig swollen diseases may occur in large-scale pig farms and rural free-range households.

First, asthma

1. Symptoms: The incubation period of the disease is 11~16 days. The main clinical symptoms are cough and asthma. The acute type of sick pig has difficulty breathing. In severe cases, the mouth is gasping, the spirit is weak, and there is obvious abdominal breathing, which is 60~120 times/min. The cough is low and low, and the body temperature is generally normal. Chronic type to acute change, the main symptom is cough, coughing is obvious when feeding pigs in the morning, continuous coughing cough in severe cases, increased breathing times and abdominal breathing, lack of energy, and reluctance to move. When the feeding management and sanitary conditions are good, the course of disease is lighter and shorter, the condition is poor, the resistance is weak, the complications are many, and the mortality rate is increased. The main lesions were found only in the lungs, hilar lymph nodes, and mediastinal lymph nodes. The lesions are most prominent in the heart of the lungs, followed by the sharp and middle leaves, and then the temporal lobe. The boundary of the lesion is obvious, and the lesions on both sides of the lung are symmetrically distributed. They are gray-red, gray-white, light red, and the hardness is increased. The appearance is like shrimp-like, and the cut surface is dense. The gray-white turbid and viscous liquid can be squeezed from the small trachea. The hilar and axillary lymph nodes Swelling, the face is yellowish white, and the lymph nodes are diffusely hyperplasia. In acute cases, the lungs have varying degrees of edema and emphysema.

2. Prevention: Vaccination is an effective measure to reduce swollen asthma. For pig farms with high risk of onset, vaccination is the realistic way to control asthma. Mycoplasma pneumoniae inactivated vaccine: intramuscular injection of the neck, pigs of all ages, weights and sexes of 7 to 10 days of age were inoculated with 1 serving (2 mL). Gastroenteritis high-yield farm: 1 (2 mL) vaccine was immunized at 7-10 days old, and the second immunization was performed 15 to 21 days later. Pneumoconiosis low-injection farm: 1 (2 mL) vaccine was immunized at 5 weeks of age. Attenuated Mycoplasma hominis: Pigs with severe clinical symptoms are eliminated before injection. Pigs and reserve pigs are immunized once a year from August to October, and each pig is given an immunization dose of 5 mL. The right chest is injected (the injection site is in the last number) Two intercostals). Piglets can be immunized early in 5 days, with an immunization dose of 2.5 mL. The right chest is injected to give piglets an early immunity, reduce the chance of infection during the breeding and fattening stages, and it is convenient and convenient for piglets to be vaccinated.

3, pig disease treatment : can be used intramuscular injection of Houttuynia injection and oxytetracycline mixed suspension or intramuscular injection of Houttuynia injection and kanamycin mixture for treatment, the effect is ideal. Lincomycin 50 mg/kg body weight, once a day, for 5 days for a course of treatment. Use florfenicol 50~70 g/t feed (based on florfenicol) plus chlortetracycline 250~500 g/t feed (based on chlortetracycline) mixed mixture treatment for 5~7 days for 1 a course of treatment. 0.4% Jinhua Pingchuan Powder and tiamulin mixed with the mixture, with Jinhua Pingchuan 4 kg / t feed and tiamulin 40 ~ 100 g / t feed (based on tiamulin). Treatment with florfenicol plus tylosin mixed dose, florfenicol 60 ~ 100 g / t feed (based on florfenicol), tylosin 50 ~ 100 g / t feed (to Thai Lecithin titer). Usage is 2 times a day, for 7 days for a course of treatment. If the body temperature of the pig is high, it is better to add the heart and feed. In order to consolidate the condition, the drug was stopped for 1 day after 1 course of treatment, and then oxytetracycline was given for consolidation for 2 to 3 days. Shuanghuanglian injection combined with florfenicol injection, the effect is good.