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A massive liver hemorrhage (MLH) recognized in Ontario broiler chickens had a characteristic clinical course and pathological lesions. Affected flocks had a higher death rate than normal, with no obvious clinical signs. Deaths from MLH began at two weeks of age; the mortality rate returned to a normal level by four weeks. The main necropsy finding was massive multiple liver hemorrhage with consequent profuse hemoperitoneum.
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Gough et al. (1978) studied this question.
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