Desempenho produtivo do tambaqui (Colossoma macropomum) alimentado com farinha de vagem de algaroba em substituição ao milho
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Data
2009-01
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Resumo
This study was undertaken aiming at studying the effects of corn replacement
by several levels of mesquite pod meal (Prosopis juliflora) (MPM) in diets for
tambaqui. Diets were formulated to have the same energy, protein and fiber
content. The replacement levels were 0, 25, 50 and 100%. 80 tambaqui fingerlings with 9,85 g ± 0,03 average weight were randomly assigned to 20
70L-aquaria in a completely randomized design with four treatments and five
replications. The aquaria were supplied with constant aeration and they were
connected to a recirculating system. The experimental period was 90 days. The
parameters studied were weight gain, feed conversion ratio, fillet yield, viscera
weight, liver weight and fat index. Generally, MPM replacement levels did not
affect growth tambaqui growth performance. It was observed a negative linear
effect (P<0.1) for fillet yield with the lower results for 100% replacement level.
Treatments did not affect the fat index and viscera weight. It was observed
quadratic effect (P<0.1) for liver weight with 63.33% being the level which
provided the highest liver weight. Economical profitability analysis
demonstrated that the control diet had the lower cost and among the
treatments which MPM was incorporated the 50% level presented the best
economical indices. Besides the MPM could completely replace corn in diets for
tambaqui without affecting growth performance, its inclusion in least cost-diets
became economically unpractical.
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Palavras-chave
Colossoma macropomum, Tambaqui, Alimentos alternativos, Farinha de vagem de algarobeira, Alternative feedstuffs, Mesquite pod meal
Citação
MIRANDA, E. C.; GUIMARÃES, I. G.; CABRAL JUNIOR, C. R.; PINHEIRO, D. M. Desempenho produtivo do tambaqui (Colossoma macropomum) alimentado com farinha de vagem de algaroba em substituição ao milho. Pubvet, Londrina, v. 3, n. 2, p. 1-19, jan. 2009.