Effect of dietary lysine level on the growth performance of orange-spotted rabbitfish (Siganus guttatus) fingerlings

نویسندگان

چکیده

The study aimed to determine the optimum dietary lysine level of orange-spotted rabbitfish Siganus guttatus Bloch, 1787 (average body weight range 5.2 7.6 gxfish-1). feeding trial was conducted for 8 weeks employing six experimental diets which were isonitrogenous, isocaloric, and isolipidic (35% crude protein (CP), 18.3 MJxkg-1 gross energy, 5% lipid). content ranged from 1.22 g 2.12 xkg-1 dry diet (35 70 gxkg-1 CP). Results showed that percent gain (PWG), specific growth rate (SGR) peaked at a about 55 CP equivalent 1.93 gxkg diet-1). Feed efficiencies i.e., efficiency ratio food conversion values as well survival not affected by treatments. Lysine requirement juvenile estimated using both broken-line quadratic regression analyses PWG SGR against levels be between 15.9 (=45.3 52.3

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ژورنال

عنوان ژورنال: Israeli journal of aquaculture-Bamidgeh

سال: 2022

ISSN: ['0792-156X']

DOI: https://doi.org/10.46989/001c.36170