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Effects of Dietary Protein Level on Growth, Food Conversion, and Protein Use in Young Tilapia nilotica at Four Salinities
Author(s) -
De Silva Sena S.,
Perera Mala K.
Publication year - 1985
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1985)114<584:eodplo>2.0.co;2
Subject(s) - tilapia , dietary protein , fish <actinopterygii> , protein efficiency ratio , feed conversion ratio , biology , food science , dried fish , zoology , body weight , fishery , endocrinology
Effect of seven artificial diets, having protein contents ranging from 10 to 48%, on the growth and food conversion in young Tilapia nilotica of mean weight 24 mg were tested in 0‰, 5 ‰, 10‰, and 15‰ salinities. Growth of young T. nilotica was consistently better on diets containing 28–30% protein. For diets up to 30% protein, the fish grew best at 10‰, and for diets of higher protein contents, fish grew best in fresh water. Efficiency of food conversion increased with dietary protein content up to 30% protein level and then decreased at higher contents. Food conversion efficiency was greater for young fish raised in 10‰ than in other salinities.