Analysis of risk factors associated with bovine leukemia virus seropositivity within dairy and beef breeding farms in Japan: A nationwide survey

被引：38

作者：

Kobayashi, S. ^{[1
]}

Hidano, A. ^{[1
]}

Tsutsui, T. ^{[1
]}

Yamamoto, T. ^{[1
]}

Hayama, Y. ^{[1
]}

Nishida, T. ^{[1
]}

Muroga, N. ^{[1
]}

Konishi, M. ^{[1
]}

Kameyama, K. ^{[1
]}

Murakami, K. ^{[1
]}

机构：

[1] Natl Inst Anim Hlth, Viral Dis & Epidemiol Res Div, Tsukuba, Ibaraki, Japan

来源：

RESEARCH IN VETERINARY SCIENCE | 2014年 / 96卷 / 01期

关键词：

Bovine leukemia virus; Epidemiology; Risk factors; ZINB model; LINKED-IMMUNOSORBENT-ASSAY; NATURAL TRANSMISSION; LEUKOSIS VIRUS; ERADICATION; INFECTION; COLOSTRUM; MILK;

D O I：

10.1016/j.rvsc.2013.11.014

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

This cross-sectional study evaluated risk factors associated with farm-level bovine leukemia virus (BLV) seropositivity in 563 dairy and 490 beef farms throughout Japan. Twenty randomly selected cattle on each farm were serologically tested, and farm epidemiologiocal information was obtained through face-to-face interviews. Due to the large number of zero-prevalence dairy and beef farms, data analysis was performed using a zero-inflated negative binomial model, which revealed that the common risk factors associated with higher within-farm seroprevalence were past detection of clinical leukemia and presence of blood-sucking insects. Loose housing on dairy farms and direct contact between calves and adult cattle on beef farms were also identified as risk factors. With regard to farm-level presence of BLV, the presence of purchased cattle was found to be a risk factor in both sectors. Sending heifers to a common ranch was identified as an additional risk factor for dairy farms. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：47 / 53

页数：7

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