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- W2354421886 abstract "3 piglets from the 10 litters born on a same day by different 10 sows with a non-immunogical pestissuum antibody titer which is greater than or equals to 1∶256 were chosen twice for an experiment.The first test is to find out the dynamic of CSF maternal antibody and the optimum period of the primary immunity.The result showed that the maternal antibody of piglets were 0 before the piglets suckled.The maternal antibody increased rapidly after they suclkled and reached the peak when they were 15 days old.The qualified rate was 100% which decreased to 93.3%,86.7%,66.7%,33.3% and 0 respectively when the piglets were 20,25,30,35 and 40 days old.The second test was to find out the optimum immune dose and period of the secondary immunity among the piglets in three groups which had received the first immunity test and the injection of one,two and four doses.The result showed that the antibody in serum was 100% qualified in 15 days.The one-dose injected group was 80% qualified and the two-dose and four-dose injected groups were 100% when they were 25 days old.The other corresponding record of there groups were 20%,40% and 50% respectively when they were 35 days old,10%,30% and 60% when they were 45 days old,50%,80% and 100% when they were 55 days old,20%,40% and 50% when they were 65 days old and 10%,20% and 40% when they were 75 days old.It was indicated that the best immunity injection time for piglets was when they were 30 days old and 4-dose injection obtained the best effect.The best time for the second immunity injection was when they were 55-to-60 days old." @default.
- W2354421886 created "2016-06-24" @default.
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- W2354421886 date "2010-01-01" @default.
- W2354421886 modified "2023-09-24" @default.
- W2354421886 title "Study on the immunization procedure for classical swine fever in piglets from intensive pig farm" @default.
- W2354421886 hasPublicationYear "2010" @default.
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