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Causes of sudden drop in egg production in New Zealand laying flocks

 

作者: J.E. Lohr,  

 

期刊: New Zealand Veterinary Journal  （Taylor Available online 1977）
卷期: Volume 25, issue 4  

页码: 100-102

 

ISSN:0048-0169

 

年代: 1977

 

DOI:10.1080/00480169.1977.34371

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Ten cases of sudden drop in egg production were investigated. All outbreaks occurred between April and October. In 4 cases infectious bronchitis was diagnosed. One case each was attributed to infectious laryngotracheitis, avian monocytosis, fowl cholera, cage layer fatigue, and fatty liver haemorrhagic syndrome. One case remained undiagnosed.

 

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