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Title Transcription
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
Title Alternative (English)
Physiological and Ecological Studies on the Grazing Cattle(II-8) : The Estimations of the Digestibility and Forage Intake with Grazing Cattle by Indicator Methods
File
language
jpn
Author
Harumoto, Tadashi
Kato, Masanobu
Aoki, Shimpei
Takeda, Sho
Description
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.
Journal Title
島根農科大学研究報告
Volume
12
Start Page
(A)39
End Page
42
ISSN
05598311
Published Date
1964-01-10
NCID
AN00108241
Publisher
島根農科大学
Publisher Aalternative
The Shimane Agricultural College
NII Type
Departmental Bulletin Paper
OAI-PMH Set
Faculty of Life and Environmental Science
Remark
A,Bを含む
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