| a survey of disease in five commercial flocks of meat breeder chickens. | causes of sickness and death in approximately 30,000 chickens in 5 meat breeder flocks were investigated between may 1979 and april 1980. approximately 23% of disease was due to neoplasms; 81% of these were marek's disease despite vaccination against this infection. other frequent diagnoses included cellulitis (15%), respiratory disease (14%), lesions of the reproductive tract (11%) and tenosynovitis/arthritis (9%). antibodies to mycoplasma gallisepticium, avian adenovirus, infectious bursal dis ... | 1984 | 6704066 |