Open AccessOptimum Dietary Protein Level for Juvenile Silver Pomfret, Pampus argenteus (Euphrasen)
Author(s) -
Arshad Hossain M.,
Almatar Sulaiman M.,
James Charles M.
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.1749-7345.2010.00413.x
Subject(s) - biology , juvenile , zoology , dietary protein , fishery , ecology
A feeding trial was conducted in a flow‐through system in 1 m 3 tanks using seawater to determine the optimum dietary protein requirement of juvenile silver pomfret, Pampus argenteus (Euphrasen). Fish were stocked a density of 12 juveniles per tank. Five semi‐purified iso‐energetic diets were formulated with fish meal to contain graded levels of 35, 40, 45, 50, and 55% crude protein. Each diet was fed to triplicate groups of fish to apparent satiation twice daily. The growth of fish fed 50% protein diet was not significantly different ( P > 0.05) from that of fish fed 45 or 55% diet, but significantly higher than that of fish fed 35 or 40% diet. Feed conversion ratio (FCR) ranged between 1.7 and 2.5%, and 35% protein diet had significantly higher FCR than those of 45, 50 and 55% diets. Protein efficiency ratio of fish fed 55% protein diet was significantly lower than rest of the diets. Fish fed 50% dietary protein showed significantly best apparent net protein utilization. There were no significant differences between the survivals of fish which ranged between 80.6 and 88.9%. Based on the polynomial regression analysis of %weight gain, the optimal dietary protein level for silver pomfret was estimated to be 49%.