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Protein and energy needs for maintenance and growth of Nile tilapia ( Oreochromis niloticus )
Author(s) -
Kaushik S. J.,
Doudet T.,
Médale F.,
Aguirre P.,
Blanc D.
Publication year - 1995
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.1995.tb00029.x
Subject(s) - nile tilapia , oreochromis , excretion , nitrogen , zoology , dietary protein , tilapia , juvenile , biology , fish <actinopterygii> , chemistry , fishery , biochemistry , ecology , organic chemistry
A trial was undertaken with juvenile Nile tilapia fed graded levels of dietary protein (0–35% DP) over 7 weeks (28°C). Measurements of nitrogen and energy utilization were made using data on ADC, comparative carcass analyses, nitrogen excretion and oxygen uptake. Data indicate that the daily protein intake for maximum N gain was c. 12 g/kg/d and the maintenance protein requirements were about of 2g/kg/d. The optimal DP/DE ratio was found to be 18mg/kJ. Differences were observed in the data on endogenous nitrogen and energy utilization depending on the dietary treatments as well as on the criteria used.