Abstract:
This article includes the results of experiments conducted on a flock of chickens. The study was conducted under field conditions at poultry firms to increase broiler chickens and laying hens. Pup age was taken into consideration at the time of disease onset and during the evolution of the percentage of morbidity and mortality Based on clinical manifestations and pathology of the disease in poultry farms unfavorable disease, it can be noted that infectious bronchitis develops characteristic age.