Sayers R G, Byrne N, O'Doherty E, Arkins S
Animal & Bioscience Research Department, Animal & Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland.
Animal & Bioscience Research Department, Animal & Grassland Research and Innovation Centre, Teagasc, Moorepark, Fermoy, Co. Cork, Ireland.
Res Vet Sci. 2015 Jun;100:21-30. doi: 10.1016/j.rvsc.2015.02.011. Epub 2015 Mar 5.
Bovine viral diarrhoea virus (BVDV) and bovine herpesvirus 1 (BoHV-1) are contagious bovine viral agents. The objectives of this study were to use quarterly bulk milk and 'spot' testing of unvaccinated youngstock to establish the national prevalence of exposure to BVDV and/or BoHV-1 in Irish dairy herds. Seasonality of bulk milk ELISA results was also examined. From a geographically representative population of 305 dairy herds, 88% and 80% of herds yielded mean annual positive bulk milk readings for BVDV and BoHV-1, respectively. Of these, 61% were vaccinated against BVDV and 12% against BoHV-1. A total of 2171 serum samples from weanlings having a mean age of 291 days yielded 543 (25%) seropositive for BVDV, and 117 (5.4%) seropositive for BoHV-1. A significant seasonal trend in bulk milk antibody ELISA readings and herd status was recorded for BVDV, with more herds categorised as positive in the latter half of the year.
牛病毒性腹泻病毒（BVDV）和牛疱疹病毒1型（BoHV-1）是具有传染性的牛病毒病原体。本研究的目的是通过对未接种疫苗的幼畜进行季度性的批量牛奶检测和“抽样”检测，以确定爱尔兰奶牛群中接触BVDV和/或BoHV-1的全国流行率。同时还研究了批量牛奶ELISA结果的季节性。在一个具有地理代表性的305个奶牛群中，分别有88%和80%的牛群BVDV和BoHV-1的年度批量牛奶平均检测结果呈阳性。其中，61%的牛群接种了BVDV疫苗，12%的牛群接种了BoHV-1疫苗。从平均年龄为291天的断奶仔猪中采集了2171份血清样本，其中543份（25%）BVDV血清呈阳性，117份（5.4%）BoHV-1血清呈阳性。记录到BVDV的批量牛奶抗体ELISA读数和牛群状况存在显著的季节性趋势，下半年被归类为阳性的牛群更多。
