Home
 /  Publication  /  Volum 22  /  Publication OUTBREAKS OF EGG-DROP SYNDROME-1976 IN TAIWAN AND ISOLATIO...
Publication OUTBREAKS OF EGG-DROP SYNDROME-1976 IN TAIWAN AND ISOLATION OF THE E...  

Update Date: [2013-11-05]

NO.: 22
 
Reportno.

AHRI report No.22

Topic

OUTBREAKS OF EGG-DROP SYNDROME-1976 IN TAIWAN AND ISOLATION OF THE ETIOLOGICAL AGENT

Department

Taiwan Animal Health Research Institute

Author HI Tsai FY.S. LuFD.F. Lin1FS.Y. ChiuFYi. LeeFC. LeeFS.T. Huang
Summary

A condition similar to egg-drop svndrome-1976 (EDS-76) occurred in S layer and broiler breeding flocks in 4 counties in Taiwan from Aptilto Oct. 1982, and it was diagnosed as EDS-76 by virological investigations. Egg production fell suddenly when the hen were 24-41 weeks of age, and the depression lasted 4-12 weeks. Production reduced 6 to 25%. Depressed egg production was accompanied by the laying of shell-less, soft-shelled, and thin-shelled
Sumrna- eggs associated with loss of egg-shell pigment. @Seven isolates of hemagglutinating adenovinis were isolated from cloacal swabs and faeces of infected hens. One isolate, cloned and named TN stan. had the same antigeriicitv in serologic test and same biological and physico chemical properties as the JPA-l strain of EDS-76 virus.

This is th efirst report on the outbreaks of EDS-76 in Taiwan and the isolation of the etiological virus.

Keyword

1976 F EDS 1F egg drop svndromeF etiological virus