Open AccessEffect of Dietary Protein and Lipid Levels on Growth Performance, Carcass Composition, and Digestive Enzyme of the Juvenile Spotted Babylon, Babylonia areolata Link 1807
Author(s) -
Chi Shu Y.,
Zhou Qi C.,
Tan Bei P.,
Dong Xiao H.,
Yang Qi H.,
Zhou Jian B.
Publication year - 2010
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/j.1749-7345.2010.00433.x
Subject(s) - biology , juvenile , composition (language) , digestive enzyme , dietary protein , enzyme , zoology , biochemistry , ecology , philosophy , linguistics , lipase
This study was undertaken to evaluate the effects of dietary protein and lipid levels on growth performance, feed utilization, carcass composition, and digestive enzyme activity of the juvenile spotted babylon, Babylonia areolata . Six experimental diets were formulated to contain three protein levels (25, 35, and 45%) at two lipid levels (8 and 12%). Triplicate groups of 40 animals (average weight 5.05 ± 0.08 g) were stocked in 120‐L tanks and fed to apparent satiation twice daily for 8 wk. Growth performance and feed utilization were significantly affected by dietary protein and lipid levels ( P < 0.05). Protein efficiency ratio (PER), specific growth rate (SGR), and weight gain (WG) were the best at 45%/8% treatment ( P < 0.05). There was no significant interaction between different levels of dietary protein and lipid on survival rate and the soft body to shell ratio (SB/SR). There was an interaction effect between dietary treatments on PER, SGR, and WG, in which shellfish fed with 45% protein at 8% lipid had the highest interaction ( P < 0.05). There was an interaction effect between dietary protein and lipid levels on pepsin, tryptase, and lipase activities in soft body. Tryptase enzyme activity of 45%/8% treatment was the lowest and the highest was found in 25%/8% treatment which also had the highest activity of lipase. Results indicated that the juvenile spotted babylon would obtain better growth performance when fed with diets containing 45% dietary protein at 8% dietary lipid.