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
2003; Wiley; Volume: 34; Issue: 12 Linguagem: Inglês
10.1046/j.1365-2109.2003.00904.x
ISSN1365-2109
AutoresMario Garduño-Lugo, Ivonne Granados-Alvarez, Miguel Á. Olvera‐Novoa, Germán Muñoz‐Córdova,
Tópico(s)Reproductive biology and impacts on aquatic species
ResumoA 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.
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