農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

本計畫含2個試驗。試驗一：老虎斑(Epinephelus fuscoguttatus)以蛋白質含量分別為30、35、40、45、50、55和60％之飼料投餵8週飼育試驗後所得結果經分析其最適成長蛋白質需求量為52.6％，在此蛋白質含量55和60％時，其飼料轉換效率也較佳。試驗二：以油脂含量分別為2、4、6、8、10、12和14％飼料進行10週的飼育試驗，顯示虎斑對油脂之最適需求量為6.77％左右，飼料轉換效率也較佳。

Two experiments were conducted to study the optimum dietary protein and lipid of juvenile tiger grouper. In experiment 1, casein and fish meal as protein source were added to the basal diets ranging from 30-60％ protein. All seven diets were fed for 8 weeks to triplicate groups of tiger grouper ( average initial weight: 39g), The regression line that fit the percent weight gain has a breakpoint at 52.6％. Feed conversion ratio (FCR) were lower in tiger grouper fed with 55 and 60 ％ protein. In experiment 2, seven dietary lipid levels (2-14％),the experiment diets were fed for 10 weeks to triplicate groups of tiger grouper (average weight: 24g).The second-order regression of weight gain percent of dietary lipid indicate that the optimum lipid level for growth of juvenile tiger grouper is 6.77％. Feed conversion ratio (FCR) were lower in tiger grouper fed with 6％ lipid.