Swine refusal factors elaborated by Fusarium strains and identified as trichothecenes
1981
Vesonder, R.F. | Ellis, J.J. | Rohwedder, W.K.
Fusarium poae (Peck) Wollenw. NRRL 3287, F. nivale (Fr.) Ces. NRRL 3289, and F. moniliforme Sheldon NRRL 3197, each grown on cracked corn (13 days at 28°C), produced refusal factors in pig bioassays. Substantial quantities of trichothecenes were detected in the refused corn: T-2 toxin (30 μg/g) was detected in corn fermented with the F. poae strain; the level of vomitoxin (1 μg/g) in corn cultured with F. nivale did not account for the 48% refusal response in the pigs tested. The F. monoliforme concomitantly produced T-2 toxin (33 μg/g) and vomitoxin (1.5 μg/g). This strain's taxonomic position was reexamined, and it is shown to be a cultural variant of the species F. tricinctum (Cda.) Sacco.
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