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Publikováno v:
Revue d'elevage et de medecine veterinaire des pays tropicaux. 47(1)
Four Gumboro disease (IBD) outbreaks were identified between February and June 1993 in the Antananarivo area (Madagascar) exhibiting the largest commercial poultry production activity. Affected birds were 3 to 5 weeks old, the mortality rate ranged f