摘要
有选择性地在湖北省12个猪场进行了猪繁殖与呼吸综合征(PRRS)的调查,结果显示,PRRSV血清阳性率为40%～60%,感染母猪因出现流产、死胎的损失率为18.8%～34.7%,仔猪出生至断乳后保育阶段的死亡率平均为21.3%。针对于此,通过建立合理的PRRS免疫程序、更新饲养管理方法、加强卫生防疫制度、提高鉴别诊断水平、防止其他疾病混合感染、强化对病猪的护理等防治措施后,母猪的产活仔数从窝平6.84头提高到9.20头,窝平提高了2.36头,死胎、流产造成的损失率由26.4%降到4.75%,仔猪从哺乳阶段到保育阶段结束的死亡率由21.3%降到8.72%。
The serum survey about PRRS was carried out in 12 pig farms selected out from Hubei province,and resalts showed that the rate of positive sera ranged from 40% to 60% respectively,the loss rate caused by abortion and dead fetus was about 18.8% to 34.7%, the average death rate of piglets,from birth to weaning and nursing stage,was 21.3%. In order to resolve these problems,a series of measures against PRRS had been taken such as establishing reasonable immunization procedure,updating feeding and management technologies,enhancing the system of sanitation and epidemic prevention,improving abilities in differential diagnosis to prevent mixed infection by other pathogens,and nursing infected pigs,etc.,after these measures was put into practice,sows average live litter size increased from 6.84 to 9.20,mamely adding 2.36 live litter size averagely,the loss rate of dead fetus and abortion has decreased from 26.4% to 4.75%,and piglets death rate has declined from 21.3% to 8.72%.
出处
《湖北农业科学》
北大核心
2007年第1期110-112,共3页
Hubei Agricultural Sciences
基金
湖北省科技攻关项目(2001AA201B04)
