Received: 17-04-2012
Accepted: 02-06-2012
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Assessing the Effective of Feed Added with Mixed of Enzymeto Culture Rainbow Trout (Oncorhynchus mykiss) at the First Commercial Stage
,
Do Huu Quynh
2
,
Tran Dinh Luan
2
Keywords
Food, Enzyme amylase, Enzyme protease, Enzyme phytase, Oncorhynchus mykiss
Abstract
Adding enzyme in feed in order to increase food digestibility, reducing pollution and increasing economical efficiency are being focused in fish nutrition research in recently. The rainbow trout at the size from 150 g to 450 g were cultured to evaluate the effect of the addition of enzymes to the feed for rainbow trout. This study used 3 different feed formulations: feed without enzyme supplement (CT1), feed was added with mixed of 6000 IU amylase, 2000 IU protease and 2000 IU phytase/1 kilogram (CT2) and a feed control RAISIO - Finland (CT3). The results shown that the survival rates are more than 97%. The Average Daily Growth rate (g/fish/day) of CT1 was 3.18, CT2 was 3.48, CT3 was 3.65 and significant difference (P < 0.05). The Food Comsumption ranged from 343 to 360 g of feed/fish and there was no significant difference between the three feed formulars (P > 0.05). The Food Conversion Ratio ranged from 1.12 to 1.31 and there was no significant different between CT2 and CT3 (P > 0.05). The initial research results show that food added enzyme is better than it did not added enzyme and can replace for imported feed to culture rainbow trout at the size of 150-450 g.
References
Cho C.Y. and C.D. Cowey(2000). "Rainbow trout, Oncorhynchusmykiss". In: R. P. Wilson (ed.). Handbook of nutrient requirements of finfish. CRC Press, Boca Raton. pp.131-143.
Cho C.Y (1980). Recent advances in the diet formulation anhthe nutrition of salmonid fishes: Type of fat and its quality. Proceeding of the conference for Canadian feed manufacturers1980, Canadian feed industry association, University of Guelph, Ontario, Canada, pp.23-27.
MaugleP.D., O. Deshimaru, T. Katayama and K.L. Simpson (1983). The use of amylase supplements in shrimp diets. Journal of the World MaricultureSociety, 14: 25-37. doi: 10.1111/j.1749-7345.1983.tb00057.x
FurnéM., M.C. Hidalgo, A. López, M. García-Gallego, A.E. Morales, A. Domezain, J. Domezainé, A. Sanz(2005). Digestive enzyme activities in Adriaaticsturgeon Acipensernaccariiand rainbow trout Oncorhychusmykiss. A comparative study. Aquaculture, Volume 250, Issues 1-2, Pages 391-398.
Nelson N (1944). A photometric adaptation of the Somogyimehtodfor the determination of glucose, J BiolChem, 153: 375-380.
KlontzG.W (1991). A Manual for rainbow trout proteinoductionon the family -Owned farm. Nelson & Sons, Inc.
SegdwickS.D (1988). Trout farming handbook 4th edition. Fishing News Books Ltd., Farnham. 160p.
Shimizu M (1992) Purification and characterization of phytasefrom Bacillus subtilis (natto) N-77. Biosci. Biotechnol. Biochem. 56, 1266-1269.
SugiuraS.H., J. Gabaudan, F.M Dong, R.W Hardy (2001). Dietary microbial phytasesupplementation and the utilization of phosphorus, trace minerals and protein by rainbow trout Oncorhynchusmykiss (Walbaum) fed soybean meal-based diets. AquacultRes 2001;32:583-92.
Stevenson J.P (1987). Trout farming manual 2nd edition. Fishing News Books, Fanham, England. 186p.
TaconA.G.J (1990). Fish feed formulation and production. Report prepared for the project Fisheries Development in Qinghaiprovince.
VielmaJ., K. Ruohonen, J. Gabaudanand K. Vogel (2004), Top-spraying soybean meal-based diets with phytaseimproves protein and mineral digestibilitiesbut not lysine utilization in rainbow trout, Oncorhynchusmykiss (Walbaum). Aquaculture Research, 35: 955-964. doi: 10.1111/j.1365-2109.2004.01106.x
YaseminB.Y and T. Funda(2010). Effects of exogenous enzyme supplementation in diets on growth and feed utilization in African catfish, Clariasgariepinus. Journal of Animal and Veterinary Advances 9 (2): 327-331, 2010.