STUDY OF NILE TILAPIA (Oreochromis niloticus) CARCASS IN FOUR WEIGHT CATEGORIES
Keywords:
Oreochromis niloticus, processamento de peixes, rendimento de carcaça, rendimento de filé, resíduos da filetagemAbstract
The purpose of this study was to evaluate the carcass and fillet yield and percentages of head, skin and waste of the Nile tilapia in four different weight categories (W1=250-300g; W2=301-350g; W3=351-400g and W4=401-450g). Twenty-four specimens were captured from 38 square-meter tanks installed at Unesp Aquaculture Center, Jaboticabal, State of São Paulo, Brazil and investigated. The carcass yields (with or without heads) were meaningfully influenced by the fish weight, though some difference was detected only between W1 and W3 categories. The maximum and the minimum fillet yield were respectively 40.39% (W1) and 32.15% (W3). Dressed out body yield and percentages of head, skin and waste for fish meal were not influenced by the weight of the specimens. The fillet weight showed a significant linear correlation (W<0.05) only with the total fish weight in the extreme weight categories (W1 and W4).Downloads
Published
2008-07-28
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Section
Zootecny