Abstract
Blackhead, or Entero-hepatitis has up to within the last year been considered a rare disease among chicks or chickens. Ward & Gallhager state that “young chickens are only slightly susceptible but may serve as carriers of the organisms.” Kaupp observed, in 1922, the death of 42 out of 43 Silver Spangled Hamburg chicks about five weeks of age. Ameba meleagridis was present in liver and cecal lesions. Tyzzer reports a case of blackhead in a chick not more than four weeks old, in May 1908. This case was complicated with bacillary infection. Hadley, in 1910, records the transmission of blackhead from chicks to poults and from poults to chicks by feeding diseased organs. A coccidium is described as the common cause of blackhead in turkeys and other fowls.During the past two years a number of inquiries have been received in regard to blackhead in chicks. A study of this .
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