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Abstract
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Article Information:
Effect of Protein to Energy Ratio on Growth Performance, Body Composition and Enzymatic Digestive Activity of Juvenile Tilapia (Oreochromis niloticus x O. mossambicus) Reared in Seawater
M.E. Rivas-Vega, A. Gil-Romero, A. Miranda-Baeza, M.A. Sandoval-Muy, J.A. López-Elías and M. Nieves-Soto
Corresponding Author: Anselmo Miranda
Submitted: October 17, 2012
Accepted: December 12, 2012
Published: January 20, 2013 |
Abstract:
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The objective of this study was to evaluate the effect of digestible Protein to Energy ratio (P/E) on growth performance, body composition and enzymatic digestive activity of juvenile tilapia (Oreochromis niloticus x O. mossambicus) reared in seawater. Six diets were evaluated (30, 23, 20, 15, 10 and 8 P/E) on the growth, digestibility, body composition and enzymatic digestive activity of juvenile tilapia. The results indicated that the P/E ratios in diets, significantly affects the growth, survival, Feed Conversion Ratio (FCR), lipid content in the body and enzymatic digestive activity. Maximum body weight was recorded in the treatments with P/E ratios of 30, 23 and 20 (20.6, 23.7 and 25.7 g, respectively) and minimum body weight (5.9 g) was recorded with P/E ratio of 8. The FCR increased significantly in P/E levels of 15, 10 and 8 mg/kJ. In conclusion, the best P/E ratio to culture juvenile tilapia in seawater was estimated in 27 mg/kJ.
Key words: amylase, digestibility, lipid, trypsin, , ,
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Cite this Reference:
M.E. Rivas-Vega, A. Gil-Romero, A. Miranda-Baeza, M.A. Sandoval-Muy, J.A. López-Elías and M. Nieves-Soto, . Effect of Protein to Energy Ratio on Growth Performance, Body Composition and Enzymatic Digestive Activity of Juvenile Tilapia (Oreochromis niloticus x O. mossambicus) Reared in Seawater. Current Research Journal of Biological Sciences, (1): 30-35.
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ISSN (Online): 2041-0778
ISSN (Print): 2041-076X |
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