Infectious coryza due to Haemophilus paragallinarum serovar B in China
文献类型: 外文期刊
第一作者: Zhang, PJ
作者: Zhang, PJ;Miao, M;Sun, H;Gong, Y;Blackall, PJ
作者机构:
关键词: Hemophilus-paragallinarum;Serological classification;Strains;Hemagglutinin;Proposal;Chickens;Scheme;Tests;Page
期刊名称:AUSTRALIAN VETERINARY JOURNAL ( 影响因子:1.281; 五年影响因子:1.282 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Infectious coryza, a disease of the upper respiratory tract of chickens, is caused by Haemophilusparagallinarum. The clinical signs of the disease include nasal discharge, facial swelling and a reduction in feed and water consumption. Infectious coryza in poultry is a disease of economic significance in many parts of the world with the greatest economic losses resulting from an increased number of culls and marked reduction (10 to 40 percent) in egg production. The most widely used serological classification scheme for H paragallinarum is the Page scheme, which recognises three different serovars, termed A, B and C. The importance of the Page scheme is that inactivated vaccines protect only against those serovars present in the vaccine. There havebeen few studies performed in China on the serological characterisation of Hparagallinarum isolates. All 29 Chinese isolates of Hparagallinarum that have been examined to date have been shown to be serovar A. We report the first isolation of Hparagallinarum serovar B from an outbreak of infectious coryza in China.
分类号: S85
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