碳水化合物水平对厚唇弱棘鯻生长和血液指标的影响

配制等蛋白质、等脂肪、不同碳水化合物水平（质量分数分别为26%、30%、34%、38%、42%）的5组（记为A、B、C、D、E组）饲料,在网箱中养殖厚唇弱棘鯻Hephaestus fuliginosus（初体重为4.02g±0.11 g）60 d,探讨碳水化合物对其生长和血液指标的影响。结果表明：C组厚唇弱棘鯻的特定生长率和饲料效率显著高于其它各组（P〈0.05）;E组鱼血浆中总蛋白浓度显著低于其它各组（P〈0.05）,各组间白蛋白和球蛋白浓度无显著差异（P〉0.05）;E组鱼血浆中血糖、甘油三酯和胆固醇浓度显著高于其它各组（P〈0.05）;各组鱼血浆中谷草转氨酶和谷丙转氨酶活性随着饲料中碳水化合物水平的上升而逐步增高,但无显著差异（P〉0.05）,各组间碱性磷酸酶活性也无显著差异（P〉0.05）。综合各项生长和血液指标分析：厚唇弱棘鯻对饲料中碳水化合物的适宜需求量为34%～38%。

The effects of dietary carbohydrate levels on growth performance and plasma biochemical indices in Hephaestus fuliginosus

The effects of dietary carbohydrate levels on growth performance and plasma biochemical indices in juvenile Hephaestus fuliginosus with initial body weight of（4.02 g±0.11 g） were investigated.The animals in a net cage were fed five experimental diets containing 26%,30%,34%,38% and 42% of carbohydrate for 60 days with triplication.The maximal specific growth rate（SGR） and feed efficiency（PE） were found in the fish fed the diet containing 34% carbohydrate（P〈0.05）.The fish fed the diet containing 42% carbohydrate showed the minimal serum total protein（TP）（P〈0.05）.There were no significant differences in serum albumin（Alb） and serum globulin（Glb） among the five groups（P〉0.05）.The fish fed the diet containing 42% carbohydrate,however,had the maximal blood glucose（GLU）（P〈0.05）,triglyceride（TG）（P〈0.05） and total cholesterol（TC）（P〈0.05）.There were no significant differences in the activities of glutamic-oxalacetic transaminase（GOT）,glutamic-pyruvic transaminase（GPT） and alkaline phosphatase（ALP） among the five groups（P〉0.05）,indicating that the optimal requirement of the fish for carbohydrate was 34%-38% in the diet.