Author:
Rabie C J,van Rensburg S J,Kriek N P,Lübben A
Abstract
Ten strains of Diplodia maydis isolated from commercial corn samples and grown on whole yellow corn at 25 degrees C for 6 weeks were toxic to ducklings and rats. The degree of toxicity depended on the incubation period and temperature. Minimum incubation periods of 3 to 4 weeks and 6 weeks were necessary to cause mortality in ducklings and rats, respectively. Cultures incubated at 31 and 25 degrees C were much more toxic than those kept at 16 and 20 degrees C. Heat treatments at 80 to 90 degrees C destroyed most of the toxicity of moldy meal. Mild lesions of a similar histopathological nature were found in subclinically and lethally poisoned rats. These included toxic myocarditis, enteritis, focal renal tubular necrosis, degeneration and peripheral necrosis of the islets of Langerhans, and a generalized venous congestion.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
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