エンシレージの化学的成分と品質に関する研究 : 酸含量と品質について (1)
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概要
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The samples of silage made in different districts of this country, were investigated for the purpose of estimating their quality, and also to find the fundamental direction of silage-making. In each sample the contents of organic acids, dry matter, crude protein, ether extract, crude fiber, and crude ash, as well as the pH value, were determined in the usual manner, but in this paper, only those results obtained regarding the organic acid content and the pH value will be reported. Both green maize silage (45 per cent) and sweet potato vine silage (31 per cent) were a very high proportion of the samples. (1) The mean pH value of samples except silages of sweet potato, sweet potato with rice bran and Sansa (feces of silkworms and disused mulberry leaves which silkworms could not eat up), was 4.45. Fifty per cent of them had a pH value below 4.2. (2) Half of these samples had very good quality and about seventy per cent were of good or better quality. In general, green maize silages were superior to sweet potato vine silages. And also the lactic acid content of the former was significantly greater than that of the latter. The quality of chinese milk-vetch silage was very good without exception, though few samples were collected. (3) Even when the silage of sweet potato or sweet potato with rice bran had a high pH value compared with that of the grass silage, the butyric acid content was low or not. (4) It was consequently, suggested that the technique for the good silage was more difficult in ensiling the mixtures of green maize and green soy bean than ensiling green maize alone.
- 社団法人 日本農芸化学会の論文