Effect of dietary protein level on excretion of ammonia in Indian major carp, Labeo rohita, fingerlings |
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Authors: | Chakraborty & Chakraborty |
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Institution: | Department of Fisheries Technology, Bangladesh Agricultural University, Mymensingh, Bangladesh |
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Abstract: | The study was conducted to investigate the effect of dietary protein on nitrogenous excretion in the form of ammonia in Indian major carp, Labeo rohita (Ham.), fingerlings (3.0 ± 0.25 g). Fish were fed to satiation in a metabolism chamber. Approximately isoenergetic diets containing 230, 280, 330 and 380 g kg?1 protein were used at 28°C. Ammonia-N excretory energy ( U ) as a percentage of ingested food energy ( C ) increased with an increase in dietary protein level: from 4.3% in fish fed 230 g kg?1 to 6.0% in fish fed 380 g kg?1 dietary protein. The relationship between excretory energy and dietary protein level is modelled. |
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Keywords: | ammonia excretion dietary protein excretory energy major carp rohu |
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