Rendimento de carcaca, file e subprodutos da filetagem da tilapia do Nilo, Oreochromis niloticus (L.), em funcao do peso corporal

摘要: The experiment was undertaken at the fish processing industry Frigopeixe in Toledo, state of Parana, Brazil. Its aim to analyze carcass, fillet and other byproducts yields (ventral abdominal muscles yield, percentage skin residues) Nile tilapia, Oreochromis niloticus (Perciformes, Cichlidae) for two live weight categories. Residues consisted head, viscera fin percentages. One hundred specimens were fed with pellet rations 22% crude protein during 5 months. Fish placed tanks 24 hours before put down, underwent thermal shock, eviscerated filleted. Filleting process done series by more than one person using methodology. Completely randomized design treatments (weight categories W 1 =300-400 g e 2 =401-500 g), 50 replications. Each considered an experimental unit. category produced high yield carcass without head (78.18%), ventral (3.51%) (6.56%). significantly higher (14.29%) (10.09%) There no significant difference (W =36.50% =36.84%) percentages =8.14% =8.00%), between tilapia.