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タイトルヨミ
ホルスタインシュ ジャクレイ キョセイギュウ ノ ヒイク ゼンキ ニオケル ジンコウ クサチ ホウボク ニツイテ
タイトル別表記
The Initial Stage of Fattening of Holstein Steers at Pasture
ファイル
言語
日本語
著者
春本 直
藤原 勉
宇津田 嘉弘
加藤 正信
内容記述(抄録等)
"Four Holstein-Friesian steers, 220-day-old and 217 kg initial body weight on average, were used in order to investigate their body weight gain after being grazed on pasture and subsequently fed intensively in their housing. A three hundred-are (a) area of pasture dominated by Orchardgrass was divided into 7 paddocks was used for a 209-day grazing period consisting of 18 times of rotational utilization. The results are summerized as follows;
1. The forage yields of each paddock for the whole rotational utilization period were 211, 176 and 117 kg dry matter/10a; and the grazing periods were 3.3, 2.6 and 2.5 day/10a for spring, summer and autumn seasons, respectively.
2. The grazing efficiency of the pasture was very low during the spring season (28%), then it was raised during the summer (63%) and autumn (53%) seasons.
3. The mean daily weight gains of steers during the grazing periods were 0.68, 0.45 and 0.63 kg for spring, summer and autumn, respectively. However. the daily weight gain was calculated as 0.61 kg for the whole grazing period.
4. During the 58-day housing period after the steers were grazed on the pasture, the mean daily weight gain was calculated as l.31 kg. There was a tendency that the animal with low weight gain during the grazing period exhibits a relatively high weight gain during the housing period, and this would be a so called ""compensatory growth effect"".
掲載誌名
島根大学農学部研究報告
26
開始ページ
71
終了ページ
75
ISSN
0370940X
発行日
1992-12-21
NCID
AN00108015
出版者
島根大学農学部
出版者別表記
Shimane University, Faculty of Agriculture
資料タイプ
紀要論文
部局
生物資源科学部
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