SONG Lin, FAN Qixue, HU Peipei, LIU Rupeng, WANG Kunpeng, YAO Changlin. Effects of Dietary Protein to Energy Ratio on Growth Performance and Digestive Enzyme Activities of Juvenile Topmouth Culter, Culter alburnus[J]. Chinese Journal of Animal Nutrition, 2013, 25(7): 1480-1487.
Effects of Dietary Protein to Energy Ratio on Growth Performance and Digestive Enzyme Activities of Juvenile Topmouth Culter, Culter alburnus
SONG Lin, FAN Qixue, HU Peipei, LIU Rupeng, WANG Kunpeng, YAO Changlin
College of Fisheries, Huazhong Agriculture University, Wuhan 430070, China
Abstract:This experiment was conducted to study the effects of dietary protein to energy ratio (P/E) on growth performance and digestive enzyme activities of juvenile topmouth culter, Culter alburnus. Nine experimental diets with different dietary P/E were formulated to contain 3 protein levels (45%, 40% and 35%) and 3 lipid levels (5%, 8% and 11%). A total of 810 juvenile topmouth culter with an initial average body weight of (10.14±3.40) g were randomly divided into 9 groups with 3 replicates per group and 30 fish per replicate. Fish in the 9 groups were fed the experimental diets with 30.94 (protein/lipid=45%/5%, D1), 29.73 (protein/lipid=40%/5%, D2), 28.11 (protein/lipid=35%/5%, D3), 29.03 (protein/lipid=45%/8%, D4), 27.79 (protein/lipid=40%/8%, D5), 26.32 (protein/lipid=35%/8%, D6), 26.90 (protein/lipid=45%/11%, D7), 25.71 (protein/lipid=40%/11%, D8) and 23.50 g/MJ (protein/lipid=35%/11%, D9) for 8 weeks, respectively. The results showed as follows: dietary P/E significantly affected the weight gain rate (WGR), specific growth rate (SRG), hepatopancreas somatic index (HSI) and intraperitoneal fat ratio (IPR) (P<0.05), and the maximum of WGR and SGR were all found in group D5, but showed no significant difference compared with groups D4, D6 and D7 in SRG (P>0.05). Dietary P/E significantly affected the protease activity in intestine and hepatopancreas (P<0.05), and both of them were firstly increased and then decreased with the increase of dietary P/E. The intestinal protease activity in group D4 had the highest value, and was significantly higher than that in other groups (P<0.05); the hepatopancreas protease activity in group D7 had the highest value, but showed no significant difference compared with groups D4, D5 and D6 (P>0.05). Dietary P/E significantly affected the lipase activity in intestine and hepatopancreas (P<0.05), but the regularity of variations was not so obvious with dietary P/E change. Dietary P/E showed no significant effect on amylase activity in both intestine and hepatopancreas (P>0.05). Through the analysis of growth performance and digestive enzyme activities, it is concluded that the optimum dietary P/E of juvenile topmouth culter is 26.90 to 29.03 g/MJ, and the requirement of dietary P/E for maximum SGR is 27.15 g/MJ, which is determined by the quadratic model regression equation. Considering about the growth performance and protein-spare effect of juvenile topmouth culter, we suggest the dietary protein and lipid levels are 40% and 8% under the optimum dietary P/E, respectively.
表2 饲料蛋能比对翘嘴鲌幼鱼生长性能的影响Table 2 Effects of dietary P/E on growth performance of juvenile topmouth culter
组别 Groups
初始均重 IBW/g
终末均重 FBW/g
存活率 SR/%
增重率 WGR/%
特定生长率 SGR/(%/d)
肥满度 CF/%
肝体比 HIS/%
肠脂比 IPR/%
D1
10.54 ±1.26
31.67 ±2.93
95.83 ±1.80
200.47 ±6.00b
1.91 ±0.14b
1.05 ±0.08
0.77 ±0.03c
1.47 ±0.01ab
D2
10.28 ±0.45
29.92 ±1.67
96.88 ±1.31
197.71 ±1.60ab
1.94 ±0.11b
1.02 ±0.01
0.86 ±0.00d
1.76 ±0.37bc
D3
10.58 ±0.68
31.32 ±2.79
95.83 ±1.80
196.75 ±3.42ab
1.97 ±0.15a
1.05 ±0.02
0.60 ±0.01a
1.29 ±0.17a
D4
10.66 ±1.02
32.13 ±2.91
96.88 ±3.13
201.41 ±1.89ab
1.97 ±0.10c
1.03 ±0.01
0.71 ±0.00bc
1.49 ±0.01ab
D5
10.87 ±1.02
33.33 ±3.08
98.96 ±1.80
206.52 ±3.29c
2.00 ±0.10c
1.06 ±0.04
0.74 ±0.00c
1.67 ±0.02bc
D6
10.48 ±0.85
31.53 ±2.40
95.83 ±1.80
200.53 ±2.34b
1.97 ±0.10c
1.04 ±0.02
0.71 ±0.08bc
1.25 ±0.08a
D7
10.68 ±0.86
32.33 ±2.85
97.92 ±1.80
203.66 ±0.99c
1.96 ±0.14c
1.04 ±0.04
0.60 ±0.01a
2.03 ±0.05d
D8
10.90 ±1.71
33.02 ±5.06
95.83 ±1.80
199.72 ±7.00b
1.94 ±0.12b
1.04 ±0.01
0.64 ±0.01a
1.98 ±0.02cd
D9
10.69 ±0.72
32.50 ±2.08
97.92 ±1.80
195.92 ±7.39a
1.91 ±0.07b
1.05 ±0.03
0.67 ±0.07ab
1.72 ±0.30bc
P值 P-value
0.762
0.562
0.018
0.016
0.889
0.000
0.000
同列数据肩注不同字母表示差异显著(P<0.05)。下表同。 Values with different small letter superscripts in the same column mean significant difference (P<0.05). The same as below.
表2 饲料蛋能比对翘嘴鲌幼鱼生长性能的影响Table 2 Effects of dietary P/E on growth performance of juvenile topmouth culter
图1
Fig. 1
图1 翘嘴鲌幼鱼特定生长率与饲料蛋能比的二次曲线回归分析Fig.1 Quadratic model regression analysis between specific growth rate and dietary P/E for juvenile topmouth culter
表3 饲料蛋能比对翘嘴鲌幼鱼肠道和肝胰脏消化酶活性的影响Table 3 Effects of dietary P/E on digestive enzyme activities in intestine and hepatopancreas of juvenile topmouth culterU/mg prot
组别 Groups
蛋白酶 Protease
脂肪酶 Lipase
淀粉酶 Amylase
肠道 Intestine
肝胰脏 Hepatopancreas
肠道 Intestine
肝胰脏 Hepatopancreas
肠道 Intestine
肝胰脏 Hepatopancreas
D1
446.06±19.68a
31.03±1.99a
108.44±7.39a
14.85±1.39a
3.87±0.24
0.48±0.02
D2
461.26±10.99a
34.39±1.94bc
146.12±8.47b
16.16±0.88a
3.58±0.79
0.47±0.02
D3
630.93±18.52d
34.74±0.56bc
138.39±4.47b
23.62±2.73b
3.68±0.13
0.50±0.03
D4
660.62±15.18e
36.31±0.39cd
138.34±11.65b
38.78±1.56d
3.22±0.06
0.47±0.03
D5
609.44±11.60cd
36.87±0.59d
158.54±2.63bc
59.18±0.46f
3.32±0.05
0.49±0.06
D6
587.08±22.54c
37.30±0.42d
176.23±12.37c
44.74±2.19e
3.64±0.37
0.46±0.56
D7
594.36±11.61c
37.78±0.77d
207.82±14.60d
38.81±3.01d
3.63±0.06
0.48±0.08
D8
511.24±20.53b
36.18±0.47c
263.31±29.28e
30.57±0.61c
3.54±0.15
0.52±0.05
D9
504.97±10.62b
33.92±1.54b
207.34±27.57d
36.43±6.68d
3.57±0.73
0.45±0.01
P值 P-value
0.000
0.032
0.000
0.001
0.398
0.795
表3 饲料蛋能比对翘嘴鲌幼鱼肠道和肝胰脏消化酶活性的影响Table 3 Effects of dietary P/E on digestive enzyme activities in intestine and hepatopancreas of juvenile topmouth culter
MQHANTA K N,MOHANTY S N,JENA J K,et al.Optimal dietary lipid level of silver barb,Puntius gonionotus fingerlings in relation to growth,nutrient retention and digestibility,muscle nucleic acid content and digestive enzyme activity[J].Aquaculture Nutrition,2008,14(4):350-359.[本文引用:1]
GAO W,LIU Y J,TIAN L X,et al.Protein sparing capacibility of dietary lipid in herbivorous and omnivorous freshwater:a comparative case study on grass carp (Ctenpharyngodon idella) and tilapia (Oreochromis nioticua×O.aureus)[J].Aquaculture Nutrition,2011,17:2-12.[本文引用:1]
WEBSTER C D,TIU L G,TIDWELL J H,et al.Effect of dietary protein and lipid levels on growth and body composition of sunshine bass (Morone chrysops×M.saxatilis) reared in cages [J].Aquaculture,1995,131:291-301.[本文引用:1]
[8]
GAYLORD T G,GATLIN Ⅲ D M.Dietary protein and energy modification to maximize compensatory growth of channel catfish (Ictalurus punctatus)[J].Aquaculture,2001,194:337-348.[本文引用:1]
[9]
SKALLI A,HIDALGO M C,ABELLN E,et al.Effects of the dietary protein/lipid ratio on growth and nutrient utilization in common dentex (Dentex dentex L.) at different growth stages[J].Aquaculture,2004,235:1-11.[本文引用:2]
[10]
BICUDO A J A,SADO R Y,CYRINO J E P.Growth and haematology of pacu,Piaractus mesopotamicus,fed diets with varying protein to energy ratio[J].Aquaculture Research,2009,40:486-495.[本文引用:2]
[11]
YUAN Y C,GONG S Y,LUO Z,et al.Effects of dietary protein to energy ratios on growth and body composition of juvenile Chinese sucker,Myxocyprinus asiaticus[J].Aquaculture Nutrition,2010,16:205-212.[本文引用:2]
MUKHTAR A K,SHABI F A.Effect of varying protein-to-energy ratios on growth,nutrient retention,somatic indices,and digestive enzyme activities of singhi,Heteropneustes fossilis (Bloch)[J].Journal of the World Aquaculture Society,2012,43(4):490-501.[本文引用:1]
CRAIG S R,SCHWARZ M H,MCLEAN E.Juvenile cobia (Rachycentron canadum) can utilize a wide range of protein and lipid levels without impacts on production characteristics[J].Aquaculture,2006,261:384-391.[本文引用:1]
[22]
OZORIO R O A,VALENTE L M P,POUSAO-FERREIRA P,et al.Growth performance and body composition of white seabream (Diplodus sargus) juveniles fed diets with different protein and lipid levels[J].Aquaculture Research,2006,37:255-263.[本文引用:1]