Open AccessDietary Protein and Lipid Requirements for Juvenile Largemouth Bass, Micropterus salmoides
Author(s) -
Huang Di,
Wu Yubo,
Lin Yayun,
Chen Jianming,
Karrow Niel,
Ren Xing,
Wang Yan
Publication year - 2017
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/jwas.12417
Subject(s) - micropterus , bass (fish) , biology , juvenile , weight gain , feed conversion ratio , factorial experiment , zoology , dietary protein , protein efficiency ratio , food science , body weight , biochemistry , fishery , endocrinology , ecology , statistics , mathematics
A feeding trial was conducted to evaluate dietary protein and lipid requirements for juvenile largemouth bass, Micropterus salmoides . A 4 × 2‐factorial layout included four protein (420, 450, 480, and 510 g/kg) and two lipid (80 and 120 g/kg) levels. Fish (initial weight 8.7 g) were fed the test diets for 8 wk. Weight gain, feed intake, feed conversion ratio, hepatosomatic index, and body composition were dependent on dietary protein level. Nitrogen retention efficiency was independent of dietary protein level, lipid level, and their interaction. Weight gain was higher in fish fed the diet containing 480–510 g/kg crude protein than in fish fed the diet containing 420–450 g/kg crude protein at two dietary lipid levels. The feed intake and weight gain were higher in fish fed the diet containing 484 g/kg crude protein and 115 g/kg crude lipid than in fish fed the diet containing 478 g/kg crude protein and 77 g/kg crude lipid. This study indicated that the suitable dietary protein and lipid levels for largemouth bass are 480–510 g/kg and 120 g/kg, respectively.