クルマエビ飼料に好ましい脂質組成とそのレベル〔英文〕

概要

論文の詳細を見る
The effect of dietary lipid and its levels on the growth, feed efficiency, and fatty acid composition of prawn, Penaeus japonicus, was studied with pollack liver oil and soybean oil, used singly or in various combinations in purified diets. At a 6% dietary lipid level, the mixed oils were more effective than either of the individual oils in growth performance and feed efficiency. In particular, the mixed oils in a ratio of 3:1 or 1:1 produced remarkably high growth and feed efficiency. Among diets containing 3, 6, 9, and 12% of the mixed oil in a 1:1 ratio, the highest growth and feed efficiency were obtained at a 6% level. The dietary mixed oil in ratios from 3:1 to 1:1 contained approximately 20-30% ω3 and 10-17% ω3 fatty acids with the ratio of ω6 to ω3 ranging from 3:1 to 1:1, and the total body lipod of the prawn fed the oils exhibited compositions of 12-20% ω3 and 20-24% ω3 fatty acids. From these results, it is concluded that a mixture of pollack liver oil and soybean oil in a ratio ranging from 3:1 to 1:1, containing approximately 20-30% ω6 and 10-20% ω3 fatty acids, is desirable as a dietary lipid source for prawn, and that a suitable lipid level is approximately 6%.
日本水産學會の論文