Abstract
To evaluate the potential of mango residues in the diets Nile tilapia on apparent digestibility, productive performance, body yield (with and without head), hepatosomatic index, somatic and visceral indexes, fat and organs weight in Nile tilapia. In the digestibility experiment were used 48 animals with average weight of 53.9 &plumn; (1.04 g) and for the performance experiment 300 juveniles were used with the average weight of 44.3 ± (2.7 g). The experimental design for both was randomized with four treatments and the performance experiment with five replicates, and digestibility with three replications. The treatments consisted of four isoproteic- and isoenergetic diets with different levels of inclusion of mango waste bran (0, 5, 10 and 15%). The digestibility coefficients were: dry matter (79.6, 76.9, 76.5 and 78.0%), crude protein (88.8, 87.4, 87.2 and 87.8%), crude energy (77.8, 75.9, 76.4 and 77.5%). Digestible energy (3304, 3320, 3395 and 3484 kcal kg-1) and digestible protein (29.3, 30.3, 29.8 and 29.8%). There are no visible treatment effects on the variables analyzed. It is recommended the inclusion of about to 15,0% of mango wastes on Nile tilapia feeding.
Highlights
Introdução A piscicultura é uma das atividades do ramo da aquicultura que mais se desenvolve no Brasil, e um dos motivos desta expansão é a grande extensão de recursos hídricos existentes no país
Mango residues for Nile tilapia
for the performance experiment 300 juveniles were used with the average weight of 44.3 ±
Summary
Misleni Ricarte de Lima1*, Maria do Carmo Mohaupt Marques Ludke, Fernando de Figueiredo Porto Neto, Bárbara Wanderley Costa Pinto, Thaysa Rodrigues Torres e Evaristo Jorge Oliveira de Souza. Para avaliar o potencial do resíduo do farelo de manga nas dietas de tilápia do Nilo, sobre a digestibilidade aparente, desempenho produtivo, rendimento de carcaça, índice hepatossomático, índice de gordura víscero-somática e peso dos órgãos. Os tratamentos foram constituídos de quatro rações isoproteicas e isoenergéticas, com diferentes níveis de inclusão do farelo de resíduo de manga (0, 5, 10 e 15%). Os coeficientes de digestibilidade aparente das rações foram respectivamente: matéria seca (79,6; 76,9; 76,5 e 78,0%), proteína bruta (88,8; 87,4; 87,2 e 87,8%), energia bruta (77,8; 75,9; 76,4 e 77,5%). A energia digestível das rações (3304, 3320, 3395 e 3484 kcal kg-1) e proteína digestível (29,3; 30,3; 29,8 e 29,8%). Não foram observados efeitos dos tratamentos sobre as variáveis analisadas no desempenho, o que possibilita a inclusão de até 15,0% do farelo de resíduo de manga nas rações de tilápia do Nilo.
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