动物营养学报2016，Vol.28Issue(7)：2069-2078,10.DOI:10.3969/j.issn.1006-267x.2016.07.011
饲料不同糖脂比对鲤鱼生长、体成分及消化酶活性的影响
Effects of Different Dietary Carbohydrate-to-Lipid Ratios on Growth, Body Composition and Digestive Enzyme Activities of Common Carp (Cyprinus carpoio)
摘要
Abstract
This study determined the effects of different dietary carbohydrate⁃to⁃lipid ratios on growth, body composition and digestive enzyme activities of common carp ( Cyprinus carpoio) . Common carp with the aver⁃age body weight of (44.45±1.60) g were randomly divided into 5 groups with 3 replicates in each group and 70 fish in each replicate. The fish in those groups were fed 5 different experimental diets with the carbohydrate⁃to⁃lipid ratios of 5.2, 6.8, 9.6, 15.0 and 27.7, respectively. The growth experiment lasted for 63 d. The re⁃sults showed as follows: 1 ) the maximum weight gain ratio ( WGR ) , specific growth rate ( SGR ) and the minimum feed conversion rate ( FCR) were observed in common carp fed the diet with 6.8 carbohydrate⁃to⁃lip⁃id ratio, and the WGR and SGR in 6.8 carbohydrate⁃to⁃lipid ratio group were significantly higher than those in other groups ( P<0.05) , while the FCR in 27.7 carbohydrate⁃to⁃lipid ratio group was significantly higher than that in 5.2 to 15.0 carbohydrate⁃to⁃lipid ratio groups (P<0.05). The protein efficiency ratio (PER) in 27.7 carbohydrate⁃to⁃lipid ratio group was significantly lower than that in other groups ( P<0.05) , but the condition factor ( CF) was significantly higher than that in 6. 8 carbohydrate⁃to⁃lipid ratio group ( P<0.05 ) . 2 ) The crude lipid content of whole body and dorsal muscle in 5. 2 and 27. 7 carbohydrate⁃to⁃lipid ratio groups was higher, and significantly higher than that in other groups ( P<0.05); the ash content of dorsal muscle in 15.0 carbohydrate⁃to⁃lipid ratio group had the lowest value, and significantly lower than that in 5.2 carbohydrate⁃to⁃lipid ratio group (P<0.05), while there were no significant differences among other groups (P>0.05). 3) With the increase of diary carbohydrate⁃to⁃lipid ratio, serum total cholesterol content was firstly decreased and then increased, and the lowest value was found in 15.0 carbohydrate⁃to⁃lipid ratio group which was significant⁃ly higher than that in 5.2 and 27.7 carbohydrate⁃to⁃lipid ratio groups ( P<0.05);the highest serum triglyceride content was found in 6. 8 carbohydrate⁃to⁃lipid ratio group, and significantly higher than that in other groups ( P<0.05);the highest serum glucose content was found in 27.7 carbohydrate⁃to⁃lipid ratio group, and signifi⁃cantly higher than that in other groups ( P<0.05);the highest liver glycogen content was found in 27.7 carbo⁃hydrate⁃to⁃lipid ratio group, and significantly higher than that in other groups except 15.0 carbohydrate⁃to⁃lipid ratio group ( P<0.05) . 4) The highest hepatopancreas and midgut protease activities were found in 27.7 carbo⁃hydrate⁃to⁃lipid ratio group, and significantly higher than those in other groups ( P<0.05);when dietary carbo⁃hydrate⁃to⁃lipid ratio was 15. 0, the foregut protease activity was significantly decreased compared with other groups ( P<0.05) . The highest hepatopancreas and foregut amylase activities were found in 15.0 carbohydrate⁃to⁃lipid ratio group;the midgut amylase activity reduced with the dietary carbohydrate⁃to⁃lipid ratio increasing, and the 27.2 carbohydrate⁃to⁃lipid ratio group was significantly lower than that in other groups ( P<0.05); the hindgut amylase activity in 15.0 carbohydrate⁃to⁃lipid ratio group had the lowest value, and significantly lower than that in other groups except 9.6 carbohydrate⁃to⁃lipid ratio group ( P<0.05) . Lipase activity in all organiza⁃tions showed the same trend, which raised first and then went down and got the highest values at 15.0 carbohy⁃drate⁃to⁃lipid ratio. Considered the growth, body composition, serum biochemical indices and digestive enzyme activities, the optimal dietary carbohydrate⁃to⁃lipid ratio of common carp is 6.8 to 15.0.关键词
鲤鱼/糖脂比/生长性能/体成分/消化酶活性Key words
common carp ( Cyprinus carpoio)/carbohydrate-to-lipid ratio/growth performance/body com-position/digestive enzyme activities分类
农业科技引用本文复制引用
曲木,李长娥,刘宏超,张宝龙,程镇燕,孙金辉,白东清,乔秀亭..饲料不同糖脂比对鲤鱼生长、体成分及消化酶活性的影响[J].动物营养学报,2016,28(7):2069-2078,10.基金项目
天津市科技支撑计划项目（13ZCZDNC00900）；天津市应用基础与前沿技术研究计划（14JCQNJC15100）；天津市高等学校创新团队（ TD12-5018）；天津市高等学校“领军人才培养计划” （）
