高水平母源抗體仔豬接種豬繁殖與呼吸綜合征弱毒活疫苗的免疫效果分析
[Abstract]:In order to evaluate the immune effect of porcine reproductive and respiratory syndrome (RRS) (PRRS) attenuated live vaccine, piglets with maternal antibodies were selected from large scale pig farms and sera were collected at different times after inoculation of PRRS attenuated live vaccine. PRRS virus (PRRSV) nucleic acid was detected by RT-PCR and PRRSV antibody was detected by N-ELISA and G-ELISA kits. The results showed that the nucleic acid of the vaccine strain could be detected in the serum of the experimental piglets within 60 days after immunization, but the nucleic acid of the wild strain could not be detected during the whole experiment period. Piglets had high maternal antibody before immunization, the positive rate reached 100, then decreased gradually, and then increased steadily after 28d / 60d (test 2 / test 1). From the 60th day to the 150th day after immunization, the positive rate was 100%. Two kinds of ELISA kits were used to simultaneously detect 329 serum samples. The coincidence rate of the test results was 96.966.The paired 蠂 ~ 2 test showed that there was no significant difference between them, the Kappa value was 0.81which was very consistent. The correlation coefficient r was 0.794, and there was a significant linear correlation between them. The results showed that high level maternal antibody could be used to evaluate the immune response of pigs after inoculation of live attenuated vaccine. N-ELISA or G-ELISA kit could be used to evaluate the immune effect.
【作者單位】: 廣西動(dòng)物疫病預(yù)防控制中心;廣西大學(xué)動(dòng)物科學(xué)技術(shù)學(xué)院;廣西黔江示范牧場(chǎng);
【基金】:廣西科學(xué)研究與技術(shù)開發(fā)計(jì)劃項(xiàng)目(桂科轉(zhuǎn)14125004-22) 廣西水產(chǎn)畜牧科技項(xiàng)目(桂漁牧科201528017)
【分類號(hào)】:S858.28
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