書誌事項
- タイトル別名
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- Limiting Amino Acids for Early-Weaned Calves Fed a Corn and Soybean Meal Diet and Response of Plasma Free Amino Acid Concentrations to Abomasally Supplemented Amino Acids
- Limiting Amino Acids for Early-Weaned C
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Holstein bull calves weaned at 6wk of age were used in two nitrogen (N) balance experiments to identify limiting amino acids for a ration based on corn, soybean meal and rice straw and containing 14.5% CP of DM. The calves were trained to maintain reflex closure of the esophageal groove throughout the experiments that started from 8wk of age. In Experiment 1, three levels (0, 0.022 and 0.111g/kg BW/d) of DL-methionine (DL-Met) were administered through the esophageal groove to 9 calves in a 3×3 Latin square design with three replicates and 10 d- period. In Experiment 2, 18 calves were divided into 3 groups, and allotted to three treatments: abomasal administration of DL-Met (0.111g/kg BW/d), DL-Met with L-tryptophan (L-Trp), or DL-Met with L-Trp and L-Lys monohydrochloride (L-LysHCl) for 2wk each. The amount of supplemental N was adjusted with L-glutamine among treatments in every experiment. As a result, the N balance was improved, and plasma concentrations of branched-chain amino acids (BCAA) were decreased, by the highest dose of DL-Met in Experiment 1. In Experiment 2, however, administration of L-LysHCl and L-Trp in addition to DL-Met improved N balance without decrease in plasma BCAA concentrations.
収録刊行物
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- 日本畜産学会報
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日本畜産学会報 68 (1), 18-28, 1997
公益社団法人 日本畜産学会
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詳細情報 詳細情報について
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- CRID
- 1390001205195071744
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- NII論文ID
- 10024585621
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- NII書誌ID
- AN00195188
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- ISSN
- 18808255
- 00215309
- 1346907X
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- NDL書誌ID
- 4129886
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 抄録ライセンスフラグ
- 使用不可