配合飼料のカロリー・たんぱく質比がハマチの成長，飼料効率および体成分に及ぼす影響

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タイトル別名
  • Effects of Calorie to Protein Ratios in Formulated Diet on the Growth, Feed Conversion amd Body Composition of Young Yellowtail
  • ハイゴウ シリョウ ノ カロリー タンパクシツヒ ガ ハマチ ノ セイチョウ

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Young yellowtail, Seriola quinqueradiata, were fed for 30 days on five isocaloric formulated diets with calorie to protein ratios of 52, 60, 70, 77 and 92kcal/kg/% protein-prepared by varying the levels of white fishmeal (86-45%) and pollack liver oil (0-19%)-, and the growth, feed conversion and body composition were determined. The weight gain and feed efficiency increased with an increase in the dietary calorie to protein ratios, reaching a maximum with the ratio 70 diet containing 53% protein and 15% fat, and both values decreased with a still greater increase in the ratios. The dietary calorie to protein ratios correlated positively with the fat content of the body, but no significant differences were observed in the contents of the other components tested. However, the maximum protein and energy retentions were observed when the fish were fed on the ratio 70 diet. The results of this and previous studies indicate that the adequate supplement of high-quality lipids to the yellowtail diet is efficient in improving the growth and feed conversion, and that the optimum calorie to protein ratio was around 70 kcal/kg/% protein at these diet conditions.

収録刊行物

  • 日本水産学会誌

    日本水産学会誌 46 (9), 1083-1087, 1980

    公益社団法人 日本水産学会

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