contagious pleuropneumonia in pigs is also called haemophilus parahaemolyticus, or haemophilus pleuropneumoniae. it is a respiratory infection. pigs of different age have susceptibility to death at the age of 4~5 months. the causative agent is haemophilus pleuropneumoniae, mainly in the respiratory tract mucosa. spread through airborne droplets, which are most susceptible to contact in a large population of intensively reared animals. the incidence and mortality of onset of pigs were higher, lower mortality and old epidemic disease.
acute disease disease at the beginning of the body temperature rises to 41.5 degrees centigrade, and do not eat, and difficulty breathing, mouth shenshe, often standing or sitting dog, and out of foam like secretions, ear, nose and limbs are blue purple, if not timely treatment, often within 1 ~ 2 days choked to death. symptomatic relief pigs, after 4 days of resistance, can gradually recover or turn to chronic. chronic disease pig body temperature is not high, there is intermittent cough, growth retardation.
the pathological changes of acute death cases, pneumonia is bilateral, part often occurs in the leaves, leaf tip and leaf diaphragm. the focus of the lesion is clear, the pneumonia area is purplish red, the section looks like the liver, and the stroma is full of bloody jelly like liquid. the surface area of cellulose and pleural pneumonia attachments, intrathoracic bloody turbid liquid. in chronic cases with a longer course of disease, the focus of pneumonia becomes induration or necrosis, surrounded by connective tissue, and the surface of the lung is adherent to the chest wall. these chronically ill pigs often fail to see symptoms.
the main measure of prevention and control is that the disease occurs once the pigs are infected.
first of all, the quarantine of the pig population, the elimination of positive pigs;
two, comprehensive disinfection pigsty disinfection once every two days, such as the rotation of morninglight strains and strains might kill with iodine disinfectant different, while strengthening ventilation.
three, strengthen management: to feed the feed by dry wet and dry material, increase the palatability; appropriate to the pig green leaves, sweet potato seedlings, radish and other succulent feed.
four, early treatment, symptoms of fever, intramuscular injection of mixed tratch morninglight no. 1 (mixed), 1 times a day for 3 consecutive days;
the whole column disease pig feed mixture: gold qi poison resistance doxycycline (original powder) tmp high immunity discharge toxin; water exchange medication: polysaccharide interferon, used for 7 days. |
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