中文摘要：

以平均体重为（8．13＋0．05）g的鲈鱼（Lateolabraxjaponicus）幼鱼为研究对象，探讨了在低鱼粉饲料中添加牛磺酸、蛋氨酸和半胱氨酸对鲈鱼幼鱼生长及鱼体氨基酸组成的影响。分别在基础饲料中添加0（对照组T-0）、1．0％牛磺酸（T-1）、2．0％牛磺酸（T-2）、0．5％蛋氨酸（M-0．5）和0．5％半胱氨酸（C-0．5）制成5种等氮等脂的实验饲料，在室内流水养殖系统中进行为期70d的养殖实验。结果显示，T-1、T-2、M．0．5和C-0．5组鲈鱼幼鱼的终末体重、特定生长率（SGR）、增重率（WGR）和摄食率（FI）均显著高于T-0组（氏0．05）；饲料中添加牛磺酸、蛋氨酸和半胱氨酸均可提高鱼体粗蛋白和粗脂肪含量（尸〈0．05），鱼体水分含量则呈现出相反的变化趋势；T-1、T-2组肝脏、肌肉中的牛磺酸含量显著高于T-0组（P〈0．05），但M．0．5、C．0．5组肝脏、肌肉中牛磺酸含量与T-0组无显著差异胗0．05）；T-1、T-2和C．0．5组肝脏的必需氨基酸及总氨基酸含量均高于T-0组（P〈0．05），但M．0．5组肝脏必需氨基酸及总氨基酸含量与T-0组无显著差异（p0．05）：T-1、T-2、M-0．5和C-0．5组肌肉的必需氨基酸含量均高于T-0组，但只有M-0．5组显著高于T-0组沪〈0．05）；T-1、T-2和M．0．5组肌肉的总氨基酸含量高于T-0组（P〈0．05），C．0．5组与T-0组无显著差异（P〉O．05）。研究表明，饲料中添加牛磺酸、蛋氨酸和半胱氨酸均可提高鲈鱼幼鱼的生长，同时可以改善鲈鱼肝脏和肌肉中的氨基酸沉积。

英文摘要：

A 10-week feeding experiment in indoor flowing-through water system was conducted to investigate the effects of dietary taurine, methionine and cysteine on growth and amino acid composition of Japanese seabass [mean initial weight （8.13±0.05） g]. A basal diet （as control） was formulated with 15% fish meal, 30% soybean meal, 13% corn gluten meal and 12% wheat gluten. The four experimental diets were supplemented with 1.0%, 2.0% taurine, 0.5% methionine and 0.5% cysteine （named as T-1, T-2, M-0.5 and C-0.5, respectively） to the basal diet to formulate isonitrogenous and isolipidic diets. Triplicate groups of 25 fish were fed to apparent satiation twice daily. During the experimental period, water temperature ranged in 23.2-28.8℃, and the dissolved oxygen content was approximately 7 mg/L. The results showed that the final body weight （FBW）, specific growth rate （SGR）, weight gain （WGR） and feed intake （FI） of T-1, T-2, M-0.5 and C-0.5 groups were significantly higher than those in the control group （P〈0.05）. Fish fed the diets with taurine, methionine and cysteine supplementation had significantly higher whole-body crude protein and crude lipid contents （P〈0.05）, while the whole-body moisture followed the opposite pattern. The taurine contents of liver and muscle in T-1 and T-2 groups were significantly higher than that in T-0 group （P〈0.05）, however, the taurine contents of liver and muscle in M-0.5 and C-0.5 groups showed no significant difference with T-0 group （P〉0.05）. Compared to the control, fish in T-I, T-2 and C-0.5 groups had higher liver essential amino acids and total amino acids contents （P〈0.05）, while these values were not significantly different in the M-0.5 group （P〉0.05）. The muscle essential amino acids content of the M-0.5 group was significantly higher than that of T-0 group （P〈0.05）, while fish in T-I, T-2 and M-0.5 groups had significantly higher muscle total amino acids contents than T-0 group （P〈0.05）. It is concl