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Update Date: [2022-09-22]



AHRI report No.17


STUDIES ON SWINE MYCOPLASMOSIS IN TAIWAN III. A Survey on Antibody Against M. Hyopneumoniae in Slaughted Pigs and the Comparative Studies on Pathology, Serology and Fluorescent Antibody Technic of Swine Mycoplasmal Pneumonia


1.Taiwan Animal Health Research Institute
2.Dq atof Pathology, PigResearch Institute
3.Department of Veterinary Mdicine, National Pingtujzg Institute of Agriculture
4.Council for Agricultural Planning and Development, Executive Yuan


Jei-Fu Su, Jian-Cherng Cheng, Suh-Jen Chen, Shuh-Jyi Liaw, Chun-Nan Weng, Cheng-I Liu and Tzay-Chuen Lin


Of 1,000 market pig serum samples collected from Kaohsiung and Taoyuan slaughter houses, the antibodies against Mycoplasmal hyopneumoniae measured by complement-fixation (CF) and indirect hemagglutination (IHA) tests were shown 35.8% and 40.7%, respectively. 
In addition, 250 market pigs from both slaughter houses were also randomly collected and studies the lungs and sera by the methods of pathology, serology and direct fluorescent antibody technic (DFAT) in order to compare their accuracy for the detection of mycoplasmal pneumonia. 110 out of 250 cases (44%) revealed the lesions confirmed microscopically. 100 of examined samples were detected antigens in lungs by DF AT, of which, 97 were seen with lesions of mycoplasmal pneumonia. The antibody-positive rates were shown 39.2% (98/250) of IHA and 34.4% (86/250) of CF tests. Among them. 91 with IHA antibody and all with CF antibody cases were also associated with lesions of mycoplasmal pneumonia in lungs. 
In this experiment. IHA test is found as the best method used for the detection of swine mycoplasmal pneumonia in hog farm, therefore, it is recommened for the methodology for eradication of this entity. 


Mycoplasmal hyopneumoniae ;indirect hemagglutination

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