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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 30, No. 4, 2009, pp. 406-410
Bioline Code: zr09061
Full paper language: Chinese
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 30, No. 4, 2009, pp. 406-410

 en Immune Status to H5N1 Avian Influenza Virus of Bar-headed Geese on Bird Island in Qinghai Lake
Zhu, Xiao-jia; Li, Lai-xing; Yang, Le & Wang, Gui-hua

Abstract

The most infected species of H5N1 highly pathogenic avian influenza (HPAI) broke out in Qinghai Lake in 2005 was bar-headed goose ( Anser indicus check for this species in other resources ). To investigate the immune status to H5N1-AIV of bar-headed geese in Qinghai Lake National Nature Reserve, 68 ejected eggs and 125 in-nest eggs of the breeding colony were collected in spring 2008, and haemagglutination inhibition (HI) was applied to analyze their yolk MAb (IgY) to H5N1-AIV. The results revealed, three years after the outbreak of HPAI in 2005, 26.5% to 35.2% of breeding pairs of the bar-headed geese breeding on Bird Island in Qinghai Lake may have acquired anti-H5N1 AIV immunocompetence. In addition, we analyzed the relationship of MAb titers of the nest-eggs and the nest density, and found the significant correlation between them (r=0.736, P=0.000). It is likely to be more adaptive that the MAb transmission pattern in the breeding colony with high breeding density.

Keywords
Bar-headed goose; H5N1 Avian influenza; Yolk; Maternal antibody (MAb); Haemagglutination inhibition (HI); Qinghai Lake

 
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