Mycobacterium avium Subspecies paratuberculosis and Bovine Leukemia Virus Seroprevalence and Associated Risk Factors in Commercial Dairy and Beef Cattle in Northern and Northeastern China.
Mycobacterium avium subspecies paratuberculosis (MAP) and bovine leukemia virus (BLV) are important pathogens, commonly responsible for economical loss to cattle farms all over the world, yet their epidemiology in commercial dairy and beef cattle in China is still unknown. Thus, from September 2013 to December 2014, a large-scale seroprevalence study was conducted to determine the seroprevalence and identify herd-level risk factors associated with MAP and BLV infection. The source sample was 3674 cattle from 113 herds in northern and northeastern China. Antibodies against MAP and BLV were detected using ELISA tests. At animal-level, the seroprevalence of antibodies against MAP and BLV was 11.79% (433/3674) and 18.29% (672/3674), respectively. At herd-level, the seroprevalence of antibodies against MAP and BLV was 20.35% and 21.24% (24/113), respectively. Herd size was identified to be associated with MAP infection while herd size and presence of cattle introduced from other farms were significantly associated with BLV infection. Further research is needed to confirm these findings and improve the knowledge of the epidemiology of these two pathogens in these regions and elsewhere in China.
College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin 130118, China.
Wu-Wen
WW
Sun
College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin 130118, China.
Wen-Fa
WF
Lv
College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin 130118, China.
Wei
W
Cong
Jilin Entry-Exit Inspection and Quarantine Bureau, Changchun, Jilin 130000, China.
Qing-Feng
QF
Meng
College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin 130118, China.
Chun-Feng
CF
Wang
College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin 130118, China.
Xiao-Feng
XF
Shan
College of Animal Science and Technology, Jilin Agriculture University, Changchun, Jilin 130118, China.
Ai-Dong
AD
Qian
D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D000914:Antibodies, Viral / Q000097:blood; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000276:immunology; D002681:China / Q000453:epidemiology; D016583:Enzootic Bovine Leukosis / Q000453:epidemiology* / Q000276:immunology; D005260:Female; D001909:Leukemia Virus, Bovine / Q000276:immunology; D008297:Male; D016927:Mycobacterium avium subsp. paratuberculosis / Q000276:immunology; D010283:Paratuberculosis / Q000453:epidemiology* / Q000276:immunology; D012307:Risk Factors; D016036:Seroepidemiologic Studies
D000907:Antibodies, Bacterial; D000914:Antibodies, Viral