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It was determined the concentration of fat and protein in the muscular tissue of 40 fish of each one of the species Pygocentrus cariba, Prochilodus mariae, Plagioscion squamosissimus, Piaractus brachypomus and Hypostomus plecostomus; captured in a lagoon flood of the middle Orinoco river using gillnets. The protein content and fat were determined by the methods of the Association of Official Analytical Chemistry (AOAC), being considered an average in the concentration of fat for P. cariba of 0.30 ± 0.01%; 0.60 ± 0.01% for H. plecostomus; 0.65 ± 0.01% for P. mariae; 0.90 ± 0.01% for P. squamosissimus and 1.55 ± 0.01% for P. brachypomus. The average in the protein concentration was of 19.60 ± 0.10% for P. mariae; 19.70 ± 0.13% for P. squamosissimus 19.70 ± 0.09% for H. plecostomus; 19.80 ± 0.15% for P. cariba and 19.80 ± 0.15% for P. brachypomus. A variance analysis (ANOVA) and a later test of Duncan it demonstrated differences statistically significant in the content of fat among species, with the bigger values of fat corresponding to P. brachypomus and P. squamosissimus and the smallest to P. cariba. The protein contents did not present significant differences. Seemingly the species P. cariba, P.mariae, P. squamosissimus, P. brachypomus and H. plecostomus, in general have a low content of fat and a high protein concentration, depending their concentrations mainly of the food, reproduction time and migration. This work constitutes a contribution to the knowledge of the chemical composition of these species, some of commercial importance as P. squamosissimus, P. brachypomus and P. mariae and other ecologically important as P. cariba and H. plecostomus

zenodo (cern european organization for nuclear research)

CONTENIDO DE GRASA Y PROTEINA EN Pygocentrus cariba, Prochilodus mariae, Plagioscion squamosissimus, Piaractus brachypomus e Hypostomus plecostomus EN UNA LAGUNA DE INUNDACION DEL ORINOCO MEDIO