Herd-level prevalence and associated risk factors for Toxoplasma gondii, Neospora caninum, Chlamydia abortus and bovine viral diarrhoea virus in commercial dairy and beef cattle in eastern, northern and northeastern China
Herd-level prevalence and associated risk factors for Toxoplasma gondii, Neospora caninum, Chlamydia abortus and bovine viral diarrhoea virus in commercial dairy and beef cattle in eastern, northern and northeastern China
复制标题
DOI：
10.1007/s00436-015-4655-0
复制
发表时间：
2015-11-01
影响因子：
2
通讯作者：
Qian, Ai-Dong
中科院分区：
文献类型：
--
作者：
Sun, Wu-Wen;Meng, Qing-Feng;Qian, Ai-Dong
虽然在我国部分地区已经报道了牛弓形虫、犬新孢子虫、流产衣原体和牛病毒性腹泻病毒感染的血清阳性率，但大多数研究都是在少量牛样本和非常有限的地区进行的，并且忽略了与这些病原体感染的高水平流行相关的牛群管理因素的评估。因此，从2013年9月至2014年12月，在中国五个省（黑龙江、吉林、辽宁、山东、河北）和内蒙古自治区的134个牛群的4487头牛中进行了一项大规模血清阳性率研究，以确定动物水平和奶牛水平的血清阳性率，并确定与这些病原体感染相关的奶牛水平的风险因素。在动物水平上，抗T。gondii、弓形虫N. caninum，C.牛病毒性腹泻病毒（BVDV）的检出率分别为10.48，17.14，11.92，50.10%。在畜群水平上，抗T. gondii、弓形虫N. caninum，C.牛流产病毒和牛病毒性腹泻病毒感染率分别为27.16%、29.10%、37.31%和40.30%。对这些特征的多因素分析表明，水源和猫科动物的存在与T。在所研究的牛群中的弓形虫感染。水源与N.犬感染的研究牛群。虽然牛群规模和管理系统与所研究牛群中BVDV感染显著相关，但这是首次报告T. gondii、弓形虫N. caninum，C.牛流产和BVDV感染。
Although the seroprevalence of Toxoplasma gondii, Neospora caninum, Chlamydia abortus and bovine viral diarrhea virus infection in cattle have been reported in some areas in China, most of them were conducted with small number of cattle samples and very limited districts and neglected the assessment of herd management factors associated with herd-level prevalence of these pathogen infections. Thus, from September 2013 to December 2014, a large-scale seroprevalence study was conducted to determine the animal-level and herd-level seroprevalence and identify herd-level risk factors associated with these pathogen infections in 4487 cattle from 134 herds in five provinces (Heilongjiang, Jilin, Liaoning, Shandong, Hebei) and Inner Mongolia Autonomous Region of China. At animal level, the true prevalence of antibodies against T. gondii, N. caninum, C. abortus and bovine viral diarrhoea virus (BVDV) was 10.48, 17.14, 11.92 and 50.10 %, respectively. At herd level, the true prevalence of antibodies against T. gondii, N. caninum, C. abortus and BVDV was 27.16, 29.10, 37.31 and 40.30 %, respectively. Multivariate analysis of these characteristics showed that source of water and presence of felids were significantly associated with T. gondii infection in the studied cattle herds. Source of water was significantly associated with N. caninum infection in the studied cattle herds. While herd size and management system were significantly associated with BVDV infection in the studied cattle herds, this is the first report of herd-level prevalence and associated risk factors of T. gondii, N. caninum, C. abortus and BVDV infection in cattle in China.