期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

1997

23

6

570-572

10.13331/j.cnki.jhau.1997.06.015

湖南省教委资助；

本校为第一机构

监测了具有高水平(≥7 log2)新城疫母源HI抗体的雏鸡在1-28日龄期间, 血清母源抗体水平变化动态。结果表明,随着日龄的增长,血清母源抗体水平逐渐降低,至28日龄时已不再能检出。免疫接种的临界日龄为14日龄。

The serous ND maternal antibody (MAb) level in the chicks having MAb of high titer (≥7 log2) was determined at the 1～28th day after hatching. The results showed that the serous MAb level gradually decreased with aging and that MAb could not be detected at the 28th day. The fourteenth day was suggested to b...