Morphometrics, fillet yield and fillet composition in Nile tilapia, Oreochromis niloticus, strains thai chitralada, Brazil local and their hybrid

• Autor(a) principal: Leonhardt, Julio Hermann
• Data de Publicação: 2006
• Outros Autores: Caetano Filho, Mauro, Frossard, Heitor, Moreno, Aleksey Machado
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Semina. Ciências Agrárias (Online)
• Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2407
• topic: Oreochromis niloticus; Nile tilapia; Fillet yield; Fillet composition; Morphometric reasons.; Tilápia do Nilo; Produção de filé; Composição de filé; Características morfométricas.

Morphometrics, fillet yield and fillet composition differences were researched in Nile tilapia, Oreochromis niloticus, strain thai-chitralada (Tai), Brazil (Local) Northern Paraná and their hybrid (Hbr, male Thailand x Brazilians female ). The experiment was designed entirely randomly with three treatments (strains) and three repetitions per treatment in hapa nets in ponds. The initial weights were 0.39 ± 0.20, 0.45 ± 0.22 and 0.41 ± 0.15 g for the strains Tai, Bras and Hbr, respectively. At the end of the experiment, the weights were 650.67, 534.25 and 360.00 g for the same previous sequence, with statistically significant differences between groups (P < 0.05). Four morphometric proportions were established to characterise each group. For the ratio (head height)/(head length), the Tai strain was largest (P < 0.05) as compared to the two other strains. The other morphometric proportions were not different (P > 0.05). The strain Hbr produced (P < 0.05) greater fillet yield (39.05%) when compared to Local (38.00 %) and Tai (36.51 %), the latter two were not different from each other (P > 0.05). Considering fillet composition, Local strain had the least crude lipid content of (1.88 %), as compared to Hbr (2.44 %) and Tai (2.96 %) which were significantly different (P 0.05).