各種緑葉蛋白質のニワトリヒナに対する栄養価

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書誌事項

タイトル別名
  • Nutritive evaluation of leaf protein concentrates made from different crops in chicks.
  • 各種緑葉蛋白質のニワトリヒナに対する栄養価〔英文〕
  • カクシュ リョクヨウ タンパクシツ ノ ニワトリ ヒナ ニ タイスル エイヨウ

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The nutritive value of leaf protein concentrates (LPCs) made from different crops was examined in chicks in connection with methionine supplementation. Two feeding experi-ments were made in which LPCs were used as a sole source of dietary protein to provide 18% crude protein. In the first experiment, the supplementation of 0.2% L-methionine improved the nutritive value of both LPCs made from broad bean and ladino clover though there was no difference in the nutritive value between both the LPCs. In the second ex-periment, the nutritive value of five LPCs was compared with that of soybean meal or isolated soybean protein. Without the supplementary methionine, the nutritive value of LPCs made from Italian ryegrass and oats-annual blue grass mixture (3:7 in a dry matter basis) was higher than that of the leguminous LPCs made from broad bean, ladino clover and red clover. This difference was related to the sulfur-containing amino acids content in the LPC. Thus, the supplementation of 0.2% L-methionine was more effective in improving the nutritive value of the leguminous LPCs low in the sulfur-containing amino acids and consequently diminished the nutritive difference among LPCs except the broad bean LPC. However, the nutritive value of LPCs with supplemental methionine was still inferior to that of soybean meal or isolated soybean protein. The nutritive value of the alfalfa LPC was examined in the second experiment, but feeding the alfalfa LPC diet caused the death of all the chicks, regardless of the methionine supplementation.

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