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タイトルヨミ
ホウボクギュウ ノ セイリ セイタイ ニ カンスル ケンキュウ 2 8 INDICATOR METHOD ニヨル ホウボク ワギュウ ノ ショウカリツ ト サイショクリョウ ノ スイテイ ニツイテ
日本語以外のタイトル
Physiological and Ecological Studies on the Grazing Cattle(II-8) : The Estimations of the Digestibility and Forage Intake with Grazing Cattle by Indicator Methods
ファイル
言語
日本語
著者
春本 直
加藤 正信
青木 晋平
武田 祥
内容記述(抄録等)
The indicator methods by the use of chromogen and <Cr>_2O_3 as indicators were applied on grazing cows, for determining digestibility and intake of pasture forage. Four Japanese Black Breed of Cattle were used in this trial.
During 7 days adjustment period and 5 days fecal sampling period, 15 g of <Cr>_2O_3 were administered for each cow at 8 a.m. once daily. During 5 days sampling period, fecal grab sameles were taken rectally at 8 a.m. and 4 p.m.. These samples were analyzed and determined their chromogen and <Cr>_2O_3 contents.
The estimated coefficients of dry matter digestibility of pasture forage by grazing cows were ranged from 65.6 to 68.8%, and the estimated forage intakes were 30.3 to 45.3kg/day in fresh weight. The forage intakes were higher in two milking cows. The chromogen levels of forage samples from pasture had large variations and the chromogen and <Cr>_2O_3 contents of fecal grab samples also largely variated day by day.
From these results, it is suggestted that the reliability of estimated, values of digestibility and forage intake would be affected by the sampling of pasture forage, representative of the one consumed by cows, and by the period of fecal sampling.
掲載誌名
島根農科大学研究報告
12
開始ページ
(A)39
終了ページ
42
ISSN
05598311
発行日
1964-01-10
NCID
AN00108241
出版者
島根農科大学
出版者別表記
The Shimane Agricultural College
資料タイプ
紀要論文
部局
生物資源科学部
備考
A,Bを含む
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