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 |
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| Authors: | Mario Garduñ o-Lugo,Ivonne Granados-Alvarez,Miguel A Olvera-Novoa,& Germá n Muñ oz-Có rdova |
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| Affiliation: | Centro de Investigación y de Estudios Avanzados del IPN (CINVESTAV), Unidad Mérida, Km 6 Antigua Carretera a Progreso, AP 73 Cordemex, Mérida, Estado de Yucatán, México;Centro de Enseñanza, Investigación y Extensión en Ganadería Tropical, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México (CEIEGT), Km 5.5 Carretera Federal Martínez de la Torre-Tlapacoyan, AP 103, Martínez de la Torre, Estado de Veracruz, México |
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| Abstract: | 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. |
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| Keywords: | tilapia oreochromis fillet body composition |
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