ファイル情報(添付) | |
タイトル |
放牧牛の生理・生態に関する研究(I-3) : 放牧牛の年令の差異,子付の有無がその行動に及ぽす影響
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タイトル |
Physiological and Ecological Studies on the Grazing Cattle(I-3) : On the Effect of Age and Nursing to Grazing Behaviors
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タイトル 読み |
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 1 3 ホウボクギュウ ノ ネンレイ ノ サイ コツキ ノ ウム ガ ソノ コウドウ ニ オヨボス エイキョウ ニツイテ
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著者 |
青木 晋平
加藤 正信
藤光 正昭
武田 祥
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収録物名 |
島根農科大学研究報告
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巻 | 10 |
開始ページ | (A)49 |
終了ページ | 56 |
収録物識別子 |
ISSN 05598311
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内容記述 |
抄録・要旨
In order to study the effect of age and nurrsing on the grazing behaviors, four groups of Japanese Black Breed of Cattle, 3 heifers (18-21 monthes after birth), 3 prime cows (5-7 years old), 3 prime cows nursing (5-6 years old) and 3 old cows (9-10 years old) were used in this study under constant observation on range for 24 hours in May 23 to 30, 1961.
The results obtained are summarized as follows : 1. Grazing times per 24 hours of old and nursing groups were longer than those of young and prime ones. 2. On ruminating and grazing times per 24 hours, a similar tendency was found in old and nursing groups, but the ruminating times of these groups were short in spite of the fact that the grazing times were long. The ratio of ruminating time to grazing time was low than expected in both groups. 3. The remasticating time was longer in old group than in young, and the number of remastication was few in old group. 4. It seems that the effect of nursing on the resting time was most remarkable and the resting time of nursing group was the longest of all groups. 5. The migrating time of nursing group was the longest and its loafing time was the longest of all. 6. The distance walked was the longest in the nursing group, and the shortest in the old. |
言語 |
日本語
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資源タイプ | 紀要論文 |
出版者 |
島根農科大学
The Shimane Agricultural College
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発行日 | 1962-03-31 |
アクセス権 | オープンアクセス |
関連情報 |
[NCID] AN00108241
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備考 | A,Bを含む |