| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2009-11-02 |
| タイトル |
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|
タイトル |
Effect of metabolizable protein intake on rates of plasma leucine turnover and protein synthesis in heifers |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
SANO, H
KAJITA, M
ITO, M
FUJITA, T
TAKAHASHI, A
|
| 著者(機関) |
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|
値 |
Faculty of Agriculture, Iwate University |
| 著者(機関) |
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値 |
Faculty of Agriculture, Iwate University |
| 著者(機関) |
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|
値 |
Faculty of Agriculture, Iwate University |
| 著者(機関) |
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値 |
Faculty of Agriculture, Iwate University |
| 著者(機関) |
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|
値 |
College of Agriculture, Akita Prefectural University |
| 登録日 |
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日付 |
2009-11-02 |
| 書誌情報 |
The Journal of Agricultural Science
巻 146,
p. 343-349,
発行日 2008-01-01
|
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0021-8596 |
| Abstract |
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内容記述タイプ |
Other |
|
内容記述 |
An isotope dilution method using [1-13C]leucine (Leu) infusion together with open-circuit calorimetry was applied to determine the effect of metabolizable protein (MP) intake on rates of plasma Leu turnover and whole body protein synthesis (WBPS) in six heifers. WBPS rate was estimated from rate of plasma Leu turnover and Leu oxidation to carbon dioxide. The experiment consisted of three levels of MP intake and was conducted in a two 3×3 Latin square designs of three 21-day periods. The experimental diet consisted of mixed hay, maize and soybean meal. Dietary MP intake of each dietary treatment was 4·3, 4·5 and 4·9 g/kg BW0·75/day by changing maize and soybean meal weights. Metabolizable energy (ME) intake was similar for all dietary treatments. When plasma α-[1-13C]keto-isocaproic acid enrichments were used as markers indicating intracellular Leu enrichments, plasma Leu turnover rate (LeuTR) increased (P=0·012) and WBPS tended to increase (P=0·091) as MP intake increased. In contrast, plasma LeuTR and WBPS were not influenced if plasma [1-13C]Leu was taken to indicate intracellular Leu enrichments. Total and plasma Leu oxidation rates did not change but intracellular Leu oxidation increased (P=0·044) with increasing MP intake. In heifers, it is suggested that rates of plasma Leu turnover and WBPS are influenced by dietary MP intake, independent of ME intake, although the change in MP intake was relatively small. |
| 出版者 |
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出版者 |
Cambridge University Press |
| 権利 |
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|
権利情報 |
Copyright © Cambridge University Press 2007 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.1017/S0021859607007551 |
| 著者版フラグ |
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出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
jas-v146p343-349.pdf (3.7 MB)
