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以魚粉及酪蛋白為蛋白源配製蛋白質含量40、44、48、52%，油脂含量10%之試驗飼 料，成長隨著飼料中蛋白質含量增加而升高，以增重百分率進行 broken-line 線性 回歸分析求得最適成長蛋白質需求為48.5%。另配製蛋白質46、50% 與10、12、14、 16%不同油脂含量飼料共8組試驗飼料進行午仔魚最適成長蛋白質及能量比試驗育試 驗，飼料中較低油脂含量成長較差，含46%蛋白質之試驗飼料，當油脂含量達14%以 上，與較高蛋白質含量50 %、油脂含量14%及16%組，同樣有較佳之增重率，初步估 計午仔魚飼料中較適成長能量為1500-1600 Kjoule / 100克飼料，蛋白質及能量比 為29.5-30.5 mg /Kjoule。午仔魚飼料中適量提高油脂可有效節約蛋白質。

The optimal growth protein requirement in dietary experiment of fourfinger threadfin (Eleutheronema rhadinum). Using fish meal and casein as protein sources, the experimental diets with a protein level of 40, 44, 48, 52% and a fat level of 10% were prepared. The growth increased with the increase in protein level in diets. Broken-line linear regression was performed as a percentage of weight gain. The analysis found that the optimal growth protein requirement was 48.5%. The optimal growth protein/energy ratio in dietary experiment. with 46, 50% protein and lipid 10, 12, 14, 16% level , The lower lipid level in diets grew poorly, The dietary content protein 46%, when the lipid content reaches more than 14%, it has a better weight gain rate same with the higher protein level of 50% and lipid level of 14% and 16%. It is estimated that the suitable growth energy in diet is 1500. -1600 Kjoule / 100g feed, protein and energy ratio is 29.5-30.5 mg / Kjoule. Properly increasing the fat in the larvae feed can effectively save protein.