Optimizing the growth performance of brown-marbled grouper, Epinephelus fuscoguttatus (Forskal), by varying the proportion of dietary protein and lipid levels

Rossita Shapawi, and Yong , Annita,Seok Kian and Isabella Ebi, and W.K. Ng, (2014) Optimizing the growth performance of brown-marbled grouper, Epinephelus fuscoguttatus (Forskal), by varying the proportion of dietary protein and lipid levels. Animal Feed Science and Technology, 191 . pp. 98-105. ISSN 3778401

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Official URL: Http://Dx.Doi.Org/10.1016/J.Anifeedsci.2014.01.020...

Abstract

Nine practical diets containing different protein (450, 500, or 550. g/kg) and lipid (80, 120, or 160. g/kg) levels in a 3. ×. 3 factorial experimental design were fed to triplicate groups of brown-marbled grouper, Epinephelus fuscoguttatus (initial weight, 8.8. ±. 1.0. g) for eight weeks. Fish were cultured in a flow-through seawater system with a stocking density of 15 fish per tank. Fish fed Diet 50/16 (500. g/kg protein and 160. g/kg lipid) had the highest final body weight and specific growth rate at the end of feeding trial. In general, diets with 450. g/kg protein, irrespective of lipid levels, produced fish with lower growth performance compared to other fish groups. Meanwhile, increasing dietary protein content to 550. g/kg did not improve growth rates of the cultured fish. The feed conversion ratio (FCR) mirrored the growth rate trend with better value of FCR observed in fish fed Diet 50/16. The results indicated that a diet formulated with 500. g/kg protein and 160. g/kg lipid was optimal for rearing brown-marbled grouper fingerlings <40. g body weight. Increasing lipid level in the diets from 80 to 160. g/kg appeared to have a protein sparing effect which should help reduce feeding costs.

Item Type:Article
Uncontrolled Keywords:Brown-marbled grouper; Epinephelus fuscoguttatus; Growth performance; Lipid requirement; Protein requirement; Protein sparing action
Subjects:Q Science > Q Science (General)
ID Code:9599
Deposited By:IR Admin
Deposited On:03 Mar 2015 14:31
Last Modified:03 Mar 2015 14:31

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