Abstract
A natural outbreak of blackhead in the turkey flock at the Agricultural Research Center, Beltsville, Maryland, during the summer of 1946, presented an opportunity to test the efficacy of two drugs for the treatment of this disease.One hundred and fifty-eight Beltsville Small White, and 42 Broad-Breasted Bronze turkeys, ranging in age from 11 to 16 weeks, were used in these tests. All the birds presented clinical evidence of the disease at the time of treatment, but no birds which appeared moribund were included in the tests. Shortly before treatment the birds were placed in wire and slat-floored pens; prior to this they had been on range.Diagnosis of the disease as blackhead was based on the clinical symptoms and postmortem findings. All the birds in these tests which are listed as dying from blackhead, as well as other birds from the original flock which were not included in these .
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