肉牛犊和奶牛犊通过虻（双翅目：虻科）叮咬感染牛白血病病毒的相对易感性。

Relative susceptibility of beef and dairy calves to infection by bovine leukemia virus via tabanid (Diptera: Tabanidae) feeding.

作者信息

Hasselschwert D L, French D D, Hribar L J, Luther D G, Leprince D J, Van der Maaten M J, Whetstone C A, Foil L D

机构信息

Department of Entomology, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge 70803.

出版信息

J Med Entomol. 1993 Mar;30(2):472-3. doi: 10.1093/jmedent/30.2.472.

DOI:10.1093/jmedent/30.2.472

PMID:8384664

Abstract

Differences in susceptibility of beef (mixed breeds) and dairy (Holstein) calves to infection by bovine leukemia virus (BLV) were compared. Transmission was accomplished by interrupted feeding of horse flies, Tabanus fuscicostatus Hine, on a donor cow exhibiting persistent lymphocytosis. Flies were transferred individually from the donor cow to each of 11 beef and 10 dairy calves. Transmission of BLV was accomplished with groups of 50 and 250 flies for beef calves and 75 and 250 for dairy calves. These findings indicate that susceptibility of beef and dairy calves to transmission of BLV by tabanids is equivalent and that BLV prevalence differences previously observed among cattle breeds may be caused by management practices.

摘要

比较了肉牛（杂交品种）和奶牛（荷斯坦）犊牛对牛白血病病毒（BLV）感染的易感性差异。通过让厩螫蝇（Tabanus fuscicostatus Hine）间断叮咬一头表现为持续性淋巴细胞增多症的供体奶牛来实现病毒传播。将苍蝇一只只从供体奶牛转移到11头肉牛犊牛和10头奶牛犊牛身上。分别用50只和250只苍蝇使肉牛犊牛感染BLV，用75只和250只苍蝇使奶牛犊牛感染BLV。这些结果表明，肉牛犊牛和奶牛犊牛对虻传播BLV的易感性相当，之前在不同牛品种中观察到的BLV流行率差异可能是由管理方式导致的。