round heart disease

round heart disease

a familial disease of turkeys characterized by sudden death due to cardiac arrest, associated with a deficiency of the plasma protein, α1-antitrypsin. Most common in inbred, broadbreasted, white turkeys.
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Round heart disease, a spontaneous and rapidly fatal cardiomyopathy in otherwise healthy poultry, was first described in chickens in Denmark in 1936 and in the United States in 1958.