中文摘要：

为研究饲料中添加诱食剂对克氏原螯虾生长、血液生化指标、肌肉常规营养成分及消化酶活性的影响,以初始体质量为（4.29±0.03）g的克氏原螯虾（Procambarus clarkii）为试验对象,选用克氏原螯虾231只,随机分为7个处理组,每个处理设3个重复,每组重复11只。采用单因素试验设计,在基础饲料中分别添加1%甜菜碱、TMAO、DMPT、复合氨基酸、大蒜素和复合诱食剂（40%甜菜碱＋20%TMAO＋20%DMPT＋20%大蒜素）,试验结束后测定克氏原螯虾生长性能、血清生化指标、肌肉常规营养成分和消化酶活性。结果显示,与对照组相比,在饲料中添加甜菜碱、TMAO、复合氨基酸、大蒜素、复合诱食剂均能显著提高克氏原螯虾的增重率,降低饲料系数（P〈0.05）,复合诱食剂还可以显著提高其摄食率（P〈0.05）;而对存活率没有显著影响（P〉0.05）。DMPT、复合氨基酸和复合诱食剂组均能显著降低血清谷丙转氨酶的水平;复合氨基酸组还能显著降低胆固醇的水平（P〈0.05）。添加甜菜碱、TMAO、DMPT、大蒜素和复合诱食剂组肌肉粗脂肪含量显著高于对照组（P〈0.05）。此外,在日粮中添加诱食剂能提高虾肠道消化酶活性（P〈0.05）。各组间血清谷草转氨酶、葡萄糖、总蛋白和白蛋白水平、肌肉水分和灰分含量差异均不显著（P〉0.05）。综上所述,饲料中添加诱食剂能显著提高克氏原螯虾的摄食、生长以及消化酶的活性。其中,复合诱食剂（40%甜菜碱＋20%TMAO＋20%DMPT＋20%大蒜素）对促进克氏原螯虾生长效果最显著。

英文摘要：

The experiment was conducted to determine the effect of dietary containing 1% betaine, TMAO, DMPT, compound amino -acid , allicin and compound feeding attractant （40% bataine ＋ 20% TMAO ＋ 20% DMPT ＋ 20% allicin） on growth performance, serum biochemical indexes, muscle composition and digestive enzyme activity of Procambarus clarkii （4.29±0. 03 g）. The results indicated that compared with control group, the weight gain rate （WGR） were significantly increased and feed conversion rate （FCR） were significantly decreased in group of 1% bataine, allicin and compound feeding attractant （ P 〈 0. 05） ; there was no significant difference of survival rate among the groups （P〉0.05）. Serum alanine aminotransferase （ALT） level was significantly lower in 1% DMFF, compound amino -acid and compound feeding attractant than that of control group ; and the content of serum total cholesterol （TCH） was the lowest in 1% compound amino - acid （P 〈 0. 05 ）. Moreover, muscle crude lipid content was significantly lower in control group and 1% compound amino - acid than other groups （P 〈 0. 05 ）. The activity of digestive enzyme was significantly higher in experimental treatments （P 〈 0. 05）. Additionally, there were no significantly differences in levels of glutamic -oxaloacetic transaminase （AST）, glucose （Glu）, total protein （TP）, muscle moisture and ash among the groups （P 〉 0. 05）. In conclusion, adding feeding attractants could improve the growth performance and digestive enzyme activity of Procambarus Clarkii, especially for compound feeding attractant.