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ID 247
Eprint ID
247
FullText URL
Title Alternative
急傾斜山地草地の牧草生産力に関する研究 (第1報)黒毛和種若令去勢牛の放牧行動に関する調査
Author
Miaki, Takashi
Tanisaki, Masaki
Shiota, Hiroshi
Watanabe, Shigeki
Kanaga, Yorie
Oomoto, Isao
Shiraishi, Taro
Abstract
In June, August and October of 1966, observations were made on the grazing behaviour of young steers of Japanese Black breed of cattle on an improved pasture of steep mountainous grassland. The behaviour of the herd of ten steers was recorded at 5 min. intervals throughout 48 hr. and classified into grazing, eating concentrate, eating hay, ruminating, resting and walking. The day to day variation in behaviour varied with the trial period of the year, but a general similarity of grazing pattern was found in the two successive days within each trial period. In June, the grazing pattern was divided into three distinct periods: early in the morning, about midday and in the evening. In August, the pattern was divided into two periods: in the afternoon and at night. In October, there was one distinct period in the afternoon. RT/GT value varied seasonally from 1.2 in June to 1 in August and October. The hay eating time increased to three times as long as that of June in August and four times in October. Therefore, an increase in herbage intake in June and a reserve decrease both in August and October are clearly indicated.
Published Date
1969
Publication Title
岡山大学農学部学術報告
Publication Title Alternative
Scientific Reports of the Faculty of Agriculture Okayama University
Volume
volume33
Issue
issue1
Publisher
岡山大学農学部
Publisher Alternative
Faculty of Agriculture, Okayama University
Start Page
43
End Page
49
ISSN
0474-0254
NCID
AN00033029
Content Type
Departmental Bulletin Paper
language
英語
File Version
publisher
Refereed
False
Eprints Journal Name
srfa