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ID 91
Eprint ID
91
フルテキストURL
タイトル(別表記)
Studies on the Chemical Composition and Quality of Silage. : IV. On the Ammoniacal Nitrogen Content and Quality.
著者
須藤 浩 岡山大学
内田 仙二 岡山大学
抄録
In order to find the relationship between the quality of silage and its constituents, especially ammonia nitrogen content, samples of silage obtained from dairyfarms at Tsuyama city, Okayama prefecture in Japan, were analyzed. In each sample, the moisture content, total nitrogen, and ammonia nitrogen as well as pH value were determined by the usual method. The following are some of the results obtained: It was found that the mean value of the dry matter of these samples was 21.61 ± 4.90 per cent. The mean value of ammonia nitrogen content was 334.4 ± 170.5mg per cent. A significant negative correlation, γ=-0.615, was found between the pH value and the lactic acid content (p<0.001). Significant positive correlations were found between the pH value and the ammonia nitrogen content of the silages; and they are shown in the following table: The regression equation was y=11.27 x-33.43, where x=pH value and y=ammonia nitrogen in per cent. of total nitrogen. It was found that the ammonia nitrogen in per cent. of the total nitrogen was an important, if not the sole, criterion for deciding the quality of silage. The results of pH measurements with Toyoroshi pH-test paper were compared with those obtained with Iio's glass electrode pH-meter. The application of pH-test paper for the estimation of pH value of silage seems to give significantly lower values than that of the pH-meter (Difference 0.1 ; p<0.001). The results of estimation of moisture in silages by means of an oven-drying method were compared with those obtained with the distillation method. The results obtained by the former method were always higher than those by the latter method.
発行日
1958
出版物タイトル
岡山大学農学部学術報告
出版物タイトル(別表記)
Scientific Reports of the Faculty of Agriculture Okayama University
12巻
1号
出版者
岡山大学農学部
出版者(別表記)
Faculty of Agriculture, Okayama University
開始ページ
15
終了ページ
28
ISSN
0474-0254
NCID
AN00033029
資料タイプ
紀要論文
言語
Japanese
論文のバージョン
publisher
査読
無し
Eprints Journal Name
srfa