Assessment for animal feed of maize kernels naturally-infected predominantly with Fusarium moniliforme and Diplodia maydis, 1. Fungal isolations and changes in chemical composition
1992
Williams, K.C. | Blaney, B.J. | Palmer, C.L. (Queensland Dept. of Primary Industries, Yeerongpilly (Australia). Animal Research Inst.) | Dodman, R.L. (Queensland Dept. of Primary Industries, Toowoomba (Australia))
In a study of 5 batches of maize grain damaged by ear rot, bulk density and 100 seed weight were highly correlated with the proportion of mould-damaged kernel in the sample. In visually sound kernels, Fusarium moniliforme, Acremonium strictum and Penicillium spp. were the most prevalent fungi isolated. In visually damaged kernels, F. moniliforme was the fungus most frequently isolated other than for one batch where D. maydis was equally prevalent. Penicillium spp. and F. subglutinans were found in all batches but at low isolation frequencies. Compared to the respective sample of sound kernel, the content of crude protein and ash was increased and crude fat was decreased by the mould damage; fibre, though more variable, was generally increased but gross energy was unaffected. In visually sound kernels, the amount of threonine, valine and glycine in the protein decreased with increasing grain N content. In contrast, in visually mould-damaged kernels, lysine increased and histidine and cystine decreased with increasing grain N content.
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