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Digestibilidade aparente de ingredientes pela tilápia-do-Nilo em tanques rede

Authors: Sato, Leonardo Seiji;

Digestibilidade aparente de ingredientes pela tilápia-do-Nilo em tanques rede

Abstract

Esta pesquisa teve como objetivo avaliar a digestibilidade aparente de ingredientes pela tilápia-do-Nilo em sistema de produção intensivo, em duas fases, crescimento e terminação. O coeficiente de digestibilidade aparente foi determinado pelo método indireto, utilizando óxido de crômio 0,1 % (Cr2O3). O experimento foi realizado na Piscicultura Fernandes, Palmital, SP, reservatório de canoas II, rio Paranapanema. Foram utilizadas tilápias-do-Nilo (Oreochromis niloticus) de pesos, 60 e 500 g e, posteriormente, estocados em 24 tanques redes de 1,0m3. O delineamento experimental foi inteiramente casualizados em esquema fatorial (3x2), três tratamentos (milho, farelo de trigo e farelo de arroz ou farinha de vísceras de aves, farinha de carne e ossos e farelo de soja) e dois pesos (50 e 500g), com seis repetições cada. Determinou-se os coeficientes de digestibilidade aparente da matéria seca, proteína bruta, energia bruta e extrato etéreo, assim como a disponibilidade aparente fósforo, magnésio, zinco e manganês. Dentre os ingredientes energéticos o milho apresentou os melhores valores, seguido do farelo de arroz e farelo de trigo. Entre os ingredientes proteicos a farinha de vísceras de aves apresentou os melhores valores, seguido do farelo de soja, e a farinha de carne e ossos apresentou os menores valores. O estudo demostrou que o coeficiente de digestibilidade aparente pode ser influenciado conforme a fase do animal, sendo que o milho, farelo de arroz e farinha de vísceras de aves, apresentaram melhores coeficientes de digestibilidade para os peixes de 500g, enquanto o farelo de trigo os melhores coeficientes para os peixes de 50g

The aim of this study was to evaluate the apparent digestibility of ingredients for Nile tilapia in intensive production system, in two fish sizes, growing and finishing. The experiment was conducted in fish farming Fernandes, Palmital, SP, canoas II reservoir, Paranapanema River. Nile tilapia (Oreochromis niloticus) 60-500 g, were stocked in 24 tanks 1.0 m3 net cage. Apparent digestibility coefficient was determined by an indirect method, using 0.1 % chromic oxide (Cr2O3) as marker. The experimental design was completely randomized in a factorial arrangement (3x2), three treatments (corn, wheat meddlings and rice bran or poultry meal, meat and bone meal and soybean meal) and two fish sizes (50-500g) with six replicates each. The apparent digestibility coefficients (ADC) of dry matter, crude protein, gross energy, lipids, and the apparent availability of phosphorus, magnesium, zinc, and manganese were determined. Among the energetic ingredients corn showed the highest values, followed by rice bran and wheat meddlings. Among the protein ingredients poutry meal showed the highest values, than soybean meal and meat and bone meal. This study demonstrated that the apparent digestibility coefficient can be influenced by fish size, since corn, rice bran and poultry meal, showed the highest digestibility coefficients for 500 g fish, however wheat meddlings showed the highest coefficient for 50 g fish

Pós-graduação em Aquicultura - FCAV

Country
Brazil
Keywords

Tilápia-do-Nilo, Fishes, Peixe - Nutrição, Peixe, Peixe - Criação, Digestão

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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Average
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