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Growth, Feed Utilization And Carcass Composition In Rainbow Trout Fed Diets With A Similar Digestible Energy Content And Different Carbohydrate Levels

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Title: Growth, Feed Utilization And Carcass Composition In Rainbow Trout Fed Diets With A Similar Digestible Energy Content And Different Carbohydrate Levels
Authors: Tekinay, Ahmet Adem
Davies, Simon John
Güner, Yusuf
Keywords: carbohydrate level, digestible energy, feed intake, nutrient utilization, rainbow trout
LC Subject Headings: Fish culture--Israel--Periodicals.
Fish culture--Periodicals.
Aquaculture--Israel--Periodicals.
Aquaculture--Periodicals.
Issue Date: 2003
Publisher: Israeli Journal of Aquaculture - BAMIGDEH
Citation: Tekinay, A.A., Davies, S.J., & Güner, Y. (2003). Growth, Feed Utilization And Carcass Composition In Rainbow Trout Fed Diets With A Similar Digestible Energy Content And Different Carbohydrate Levels. The Israeli Journal of Aquaculture - Bamidgeh, 55(1), 31-38.
Series/Report no.: The Israeli Journal of Aquaculture - Bamidgeh
Abstract: Three diets including 13.2%, 22% or 30.5% carbohydrates as extruded wheat meal were fed to rainbow trout, Oncorhynchus mykiss (initial weight 34.8 g), for twelve weeks to investigate their influence on growth, protein and energy utilization and carcass composition. Daily feeding rates were 1.76, 2.05 or 2.17 g feed per 100 g body weight for the three diets, respectively, so as to reach a daily allowance of about 35.5 kJ digestible energy per 100 g body weight. No significant differences (p>0.05) in final mean weight or specific growth rate were observed between the treatments. Feed efficiency was negatively correlated to the dietary carbohydrate level. Utilized digestible protein and energy per kg growth were 365, 348, 358 g and 15.4, 15.9, 17.0 MJ, respectively, for the three diets. Apparent net protein and energy utilization of the groups fed a medium or high carbohydrate level were higher than those of the low carbohydrate group. Analysis of fish carcasses at the end of the trial revealed no significant (p>0.05) variations attrib- utable to the carbohydrate level.
Pages/Duration: 8 pages
URI/DOI: http://hdl.handle.net/10524/19069
ISSN: 0792-156X
Appears in Collections:IJA Volume 55, Issue 1, 2003



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