マダイChrysophrys major用配合飼料に植物性蛋白質の利用〔魚類の摂餌刺激物の研究-6-〕

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An experiment was conducted to examine the availability of plant protein as a protein source in the diet for red sea bream Chrysophrys major. Crude protein content of test diet I was adjusted to 62.00% of plant protein and 38.00% of autolysed visceral protein and the test diet II contained 53.00% of plant protein, 36.44% of autolysed visceral protein and 10.56% of fish meal protein. The content of crude fat was found to be 13.70% in the test diet I and 14.70% in the test diet II respectively. Commercial feed for red sea bream and raw sand launce Ammodytes presonatus were used as control diets. The groups fed on the test diets I, II and raw fish showed higher growth and feed efficiency than that of the group fed on the commercial feed for red sea bream. The growth and feed efficiency in the fish on the test diet I, II and the group fed on raw fish showed approximateyly the same results.