摘要
为建立适用于现代规模猪场的猪繁殖与呼吸综合征(PRRS)风险评估方法,以猪繁殖与呼吸综合征病毒(PRRSV)传入猪场和场内循环传播的相关风险因素组成的总体风险为建模系统,将其按层次建成由2个Ⅰ级、8个Ⅱ级和29个Ⅲ级风险指标变量组成的评估指标体系,并以此为基础构建了计算各级指标变量风险值的评估系统。该评估系统通过调查问卷、实地收集和工具辅助3种指标数据采集方法获取猪场PRRS风险相关数据,并计算输出各级指标风险值,提示猪场高风险指标和单一高风险因子,为规模猪场PRRS风险管理决策提供支持。
A porcine reproductive and respiratory syndrome （ PRRS） risk assessment system for large-scale pig farms was developed in this study. The system consists of porcine reproductive and respiratory syndrome virus（ PRRSV） external risk factors and internal risk factors, including two level I risk indices, eight level II risk indices and twenty-nine level III risk indices. External factors were set as locations, entry of supplies, employee and service vehicles, employees and visi-tors, transportation of live pigs, transportation of feed, disposal of dead animals, manure management, facilities, bio-vec-tors, and source of pigs, etc. Internal risk factors were related to host immunity and circulation of resident viruses, inclu-ding PRRSV infection status, management practices, flow of pigs, vaccine use, other diseases challenges, and herd and site characteristics, etc. The system could show the high risk indices and high-risk single factors for pig farms by collecting risk-related data through questionair, field sur-vey and computer-assisted scoring. The establishment and application of the PRRS assessment system will support the PRRS risk management decision at the pig farm level.
出处
《江苏农业学报》
CSCD
北大核心
2014年第3期602-606,共5页
Jiangsu Journal of Agricultural Sciences
基金
江苏省农业科技自主创新资金项目[CX(13)5031]
国家公益性行业(农业)科研专项计划项目(200903055-4-3)
