PRRSV阳性血清驯化对后备母猪繁殖性能的影响

发布时间：2019-06-19 00:34

【摘要】：【目的】对比分析猪繁殖与呼吸综合症病毒(PRRSV)阳性血清驯化和疫苗免疫两种方式对猪场后备母猪免疫抗体水平及繁殖性能的影响,为规模养殖场选择适宜免疫方式防控猪繁殖与呼吸综合症(PRRS)提供参考依据。【方法】以血清驯化和疫苗免疫两种方式分别免疫90日龄后备母猪,1个月后经前腔静脉窦采血检测抗体水平,同时测定后备母猪第一胎的受胎率、分娩率、胎产仔数、胎产活仔数、产弱仔率、产死胎率、产畸形及木乃伊率等繁殖性能指标。【结果】血清驯化与疫苗免疫后备母猪的血清抗体阳性率分别为100.00%和99.30%,但疫苗免疫后备母猪的抗体水平离散度相对较低,且较集中。血清驯化与疫苗免疫后备母猪第一胎的受胎率(96.79%vs 97.11%)、分娩率(88.55%vs 88.96%)、胎产仔数(11.26 vs 11.41)、胎产活仔数(10.3 vs 10.5)、产弱仔率(3.61%vs 3.32%)、产死胎率(2.96%vs 2.99%)、产畸形及木乃伊率(4.35%vs 4.13%)相近,二者差异不显著(P0.05),但均优于对照后备母猪。【结论】在确定养猪场内只流行一种血清型PRRSV时,可采用血清驯化替代疫苗免疫防控PRRS,除了能有效提高后备母猪的繁殖性能外,还具有成本低廉、操作简单的特点。
[Abstract]:[objective] to compare and analyze the effects of pig reproductive and respiratory syndrome virus (PRRSV) positive serum acclimation and vaccine immunization on immune antibody level and reproductive performance of reserve sows in pig farms, and to provide reference for selecting suitable immune methods to prevent and control pig reproductive and respiratory syndrome (PRRS) in large-scale farms. [methods] 90-day-old reserve sows were immunized with serum domestication and vaccine immunization, respectively. One month later, the antibody level was detected through anterior vena cava sinus collection, and the conception rate, delivery rate, litter size, live litter size, weak litter size, stillbirth rate, malformation rate and mummy rate of the first fetus of reserve sows were measured at the same time. [results] the positive rates of serum antibodies in serum domesticated and vaccine immunized sows were 100.00% and 99.30%, respectively. However, the dispersion of antibody level in vaccine immunized sows was relatively low and concentrated. The conception rate (96.79%vs 97.11%), delivery rate (88.55%vs 88.96%), litter size (11.26 vs 11.41), live litter size (88.55%vs 3.32%), stillbirth rate (2.96%vs 2.99%), deformity and mummification rate (4.35%vs 4.13%) of serum domesticated sows were similar to those of vaccine immunized sows. There was no significant difference between the two groups (P 0.05), but both of them were superior to the control sows. [conclusion] when it is determined that only one serotype PRRSV is popular in pig farms, serum domestication can be used instead of vaccine immunization to prevent and control PRRS, which can not only effectively improve the reproductive performance of reserve sows, but also has the characteristics of low cost and simple operation.
【作者单位】：广西农垦永新畜牧集团金光有限公司;广西畜禽品种改良站;广西农垦永新畜牧集团;
【基金】：国家现代农业产业技术体系广西生猪产业创新团队建设项目(nycytxgxcxtd-03-15) 南宁市西乡塘区科学研究与技术开发计划项目(201710317)
【分类号】：S858.28

【参考文献】