2016年陕北部分猪场四种病毒病抗体检测及有效微生物对母猪生产性能的影响

发布时间：2018-08-06 14:02

【摘要】：疫病特别是病毒性疫病是影响养猪业发展的最主要原因,对规模化猪场危害较为严重的病毒性传染病,主要有猪瘟(CSF)、猪繁殖与呼吸综合征(PRRS)、猪圆环病毒病(PCVD)、猪伪狂犬病(PR)等对养猪业危害严重。疫苗免疫接种是防控传染性疾病最主要的一种手段,对猪群免疫抗体水平的监测分析是判定猪群感染风险和制定防控措施的重要依据。本论文对2016年陕北部分猪场的595份血清样品进行猪瘟、猪繁殖与呼吸综合征、猪圆环病毒病、猪伪狂犬病病病毒血清抗体(gB)检测,同时对部分猪场的伪狂犬病病毒感染抗体(gE)进行检测,分析这些猪场对这四种疫病免疫和伪狂犬病病毒感染情况。另外,进行了有效微生物(EM)对母猪生产性能影响的研究,为EM在生猪养殖中的使用提供参考资料。本文获得以下结果:1.2016年陕北地区部分猪场四种病毒病疫苗免疫状况和伪狂犬病病毒感染状况。(1)免疫猪场CSF血清抗体阳性率为81.40%;PRRS为72.11%,PCVD为81.62%,PR为67.51%。(2)榆林地区猪场的275份血清样品中,CSF、PRRS和PCVD抗体阳性率分别为90.00%、70.00%、83.53%;延安地区猪场的320份血清样品中,CSF、PRRS和PCVD抗体阳性率分别为78.79%、72.93%、80.54%。(3)仔猪、基础母猪和公猪的CSF血清抗体阳性率分别为80%、85.53%和91.17%;育肥猪和基础母猪PRRS血清抗体阳性率分别为75.86%和85.39%;仔猪、育肥猪、基础母猪和公猪PCVD抗体阳性率分别为75%、87.78%、80%、76.92%。仔猪PRVgB血清抗体阳性率为77.14%。(4)非伪狂犬病疫苗免疫猪场的371份血清中PRVgE抗体阳性率为27.49%。2.EM对母猪生产性能的影响。对产后母猪和断奶仔猪饲喂有效微生物菌群(EM)的结果表明:母猪产后日均采食量较对照组提高12.07%,仔猪的初生重较对照组提高15.90%,产活仔数提高了12.09%,断奶重增加9.09%,断奶仔猪头数增多20.99%,断奶成活率提高8.81%,断奶后仔猪试验组的平均采食量较对照组提高10.26%,料重比降低了7.14%,发病率下降了50.03%。
[Abstract]:Epidemic disease, especially viral epidemic disease, is the main reason that affects the development of pig industry. It is harmful to large-scale pig farms for viral infectious diseases. Swine fever (CSF), porcine reproductive and respiratory syndrome (PRRS),) porcine circovirus disease (PCVD),) pseudorabies virus (PR) is a serious hazard to pig breeding. Vaccination is the most important means to prevent and control infectious diseases. Monitoring and analyzing the level of antibody against swine is an important basis to determine the risk of swine infection and to formulate prevention and control measures. In this paper, 595 serum samples from pig farms in Northern Shaanxi in 2016 were tested for swine fever, porcine reproductive and respiratory syndrome, porcine circovirus disease and pseudorabies virus antibody (gB). At the same time, the antibody (gE) of pseudorabies virus infection in some pig farms was detected, and the immunization and infection of pseudorabies virus were analyzed. In addition, the effect of effective microorganism (EM) on the performance of sows was studied in order to provide reference for the use of EM in pig breeding. The results are as follows: 1. Immunization status and pseudorabies virus infection status of four viral vaccines in some pig farms in Northern Shaanxi in 2016. (1) the positive rate of CSF antibody in sera of immunized pig farms is 81.40 and 72.110.PCVD is 81.62% and PR is 67.51%. (2) 275 pig farms in Yulin area have positive rates of antibody against PRRS. The positive rates of anti-PRRS and PCVD antibodies in serum samples were 90.0070.00and 83.53, respectively. The positive rates of PRRS and PCVD antibodies in 320 serum samples from pig farms in Yan'an area were 78.7993 and 72.93and 80.54, respectively. (3) piglets. The positive rates of CSF antibody were 85.53% and 91.17% in basal sows and boars, 75.86% and 85.39 in fattening pigs and basic sows, respectively, and the positive rates of PCVD antibody in piglets, fattening pigs, basic sows and boars were 7587.7880800.76.92%, respectively. The positive rate of PRVgB antibody in piglets was 77.14. (4) the positive rate of PRVgE antibody in 371 sera of non-pseudorabies vaccine immunized pig was the effect of 27.49%.2.EM on sows' performance. The results of postpartum sows and weaning piglets fed with effective microbial flora (EM) showed that the average daily feed intake of sows was 12.07 higher than that of the control group, the birth weight of piglets increased 15.90%, the number of live piglets increased 12.09%, the weaning weight increased 9.09%, and the weaning weight increased 9.09%. The number of piglets increased 20.99, the survival rate of weaning increased 8.81%, the average feed intake of the experimental group increased 10.26 compared with that of the control group, the feed weight ratio decreased 7.14%, and the incidence rate decreased 50.03%.
【学位授予单位】：西北农林科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S858.28

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