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《Journal of Mountain Agriculture and Biology》 2007-01
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The fluctuation dynamics of maternal antibody against foot and mouth disease in piglets

YANG Xian-fu1,WANG Kai-gong1**,LI Yi2,ZHOU Bi-jun1,HAN Jian-bao1(1.College of Animal Science,Guizhou University,Guizhou Guiyang 550025,China;2.Guizhou Jinliang Stock Growing Development CO.,Ltd,Guizhou Guiyang 550018,China)  
20 piglets were randomly selected in an intensive farm of Guiyang city.By using two kinds of serological methods,indirect hemagglutination assay(IHA),liquid phase blocking ELISA(LPB-ELISA),the fluctuation dynamics of maternal antibody against foot and mouth disease(FMD)have been monitored and analyzed.The results of the experiment showed that the FMD maternal antibody of the piglets reached the peak at the age of 13 days,the antibody average titers detected by IHA and LPB-ELISA were 2.76 and 2.74 respectively,the qualification rates of the FMD maternal antibody were 90% and 85% respectively.The average titers were 2.45 at the age of 23 days,the qualification rates of the FMD maternal antibody were 75%,most piglets were still protected by the maternal antibody.The titers of the matrnal antibody declined in linearity with the piglets age increased,the antibody average titers detected by IHA and LPB-ELISA were 1.98 and 1.95 respectively at the age of 36 days,the qualification rates of the FMD maternal antibody were 55%,the maternal antibody titers of 45%piglets were lower than the minimal protection threshold.Accordingly,the first vaccination of the piglets was confirmed on the 36 days old.No significant difference was observed between the two methods.
【Fund】: 贵州省“十一五”农业科技攻关重大项目资助[黔科合NZ字(2005)3002];; 贵阳市农业局科学技术项目资助[(2004)6001]
【CateGory Index】: S858.28
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