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Comparison of growth, fillet yield and proximate composition between Stirling Nile tilapia (wild type) ( Oreochromis niloticus , Linnaeus) and red hybrid tilapia (Florida red tilapia×Stirling red O. niloticus ) males
Author(s) -
GarduñoLugo Mario,
GranadosAlvarez Ivonne,
OlveraNovoa Miguel A,
MuñozCórdova Germán
Publication year - 2003
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1046/j.1365-2109.2003.00904.x
Subject(s) - oreochromis , nile tilapia , biology , tilapia , fillet (mechanics) , fishery , zoology , stirling engine , botany , fish <actinopterygii> , thermodynamics , materials science , composite material , physics
A comparison was made of some productive traits of Stirling Nile tilapia (wild type) ( Oreochromis niloticus , Linnaeus) and red hybrid tilapia (Florida red tilapia× Stirling red O. niloticus ) males during a 98‐day grow‐out period. Twenty‐two males from each genetic group with initial weights of 139.0 g for O. niloticus and 207.3 g for the red hybrid were placed in triplicate tanks. The fish were fed with a feed containing 36.8% crude protein. Survival was 97.0% for the red hybrid and 83.3% for O. niloticus. Daily individual weight gains were 2.95 and 2.50 g and final body weights were 473.0 and 348.8 g for the red hybrid and O. niloticus respectively. Fillet yield was similar for both the species, with 33.4% for the red hybrid and 32.0% for O. niloticus . Fresh fillet lipid content was perceptibly less in the red hybrid (0.33%) than in O. niloticus (2.07%). Some benefits of a red low‐fat tilapia genotype are discussed.