Growth and body composition of juvenile curimatã-pacu (Prochilodus argenteus) fed diets with different protein: lipid ratios

ABSTRACT Promising species for aquaculture need to have their nutritional requirements defined. Considering that protein is the most expensive macronutrient in aquaculture diets, the present study aimed to estimate the protein requirement of curimatãpacu fed with diets containing two lipid levels. T...

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Autores principales:	Duarte,Gabriela, Lucena,Jorge E.C., Almeida,Omer Cavalcanti de, Bicudo,Álvaro J.A.
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2019
Materias:	Prochilodus argenteus Prochilodontidae protein requirement non-protein energy sources iliophage fish
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000100114
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spelling	oai:scielo:S0718-560X20190001001142019-03-27Growth and body composition of juvenile curimatã-pacu (Prochilodus argenteus) fed diets with different protein: lipid ratiosDuarte,GabrielaLucena,Jorge E.C.Almeida,Omer Cavalcanti deBicudo,Álvaro J.A. Prochilodus argenteus Prochilodontidae protein requirement non-protein energy sources iliophage fish ABSTRACT Promising species for aquaculture need to have their nutritional requirements defined. Considering that protein is the most expensive macronutrient in aquaculture diets, the present study aimed to estimate the protein requirement of curimatãpacu fed with diets containing two lipid levels. Thus, eight experimental diets were formulated to contain 20, 25, 30 and 35% of crude protein (CP) associated to 11 and 15% of crude lipids (CL) were formulated, constituting a completely randomized factorial design (4 CP x 2 CL) with three replicates per treatment. The juveniles (3.6 ± 0.01 g) were fed daily with 6% of the biomass, three times a day (08:00, 12:00 and 16:00 h) for 70 days. The protein requirement was estimated by the combination of the broken line and quadratic regression models. The CP concentration in the diets was the only factor influencing (P < 0.05) the growth and feeding efficiency variables of the fish, without interaction (P > 0.05) with the CL level of the diets. The requirement for weight gain and fish feed efficiency was estimated at 32.5 and 34.5% CP. Protein retention decreased (P < 0.05) in proportion to CP elevation. Fish fed 15% CL had higher (P < 0.05) body lipid deposition. On the other hand, the increase of CP of the diets decreased (P < 0.05) lipid deposition in juveniles. Therefore, it is recommended that young curimatãpacu between 3 and 27 g in weight should be fed diets containing 32.5-34.5% CP and 11% of CL, equivalent to a protein: energy ratio of 22-23 mg kJ−1info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.47 n.1 20192019-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000100114en10.3856/vol47-issue1-fulltext-12
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Prochilodus argenteus Prochilodontidae protein requirement non-protein energy sources iliophage fish
spellingShingle	Prochilodus argenteus Prochilodontidae protein requirement non-protein energy sources iliophage fish Duarte,Gabriela Lucena,Jorge E.C. Almeida,Omer Cavalcanti de Bicudo,Álvaro J.A. Growth and body composition of juvenile curimatã-pacu (Prochilodus argenteus) fed diets with different protein: lipid ratios
description	ABSTRACT Promising species for aquaculture need to have their nutritional requirements defined. Considering that protein is the most expensive macronutrient in aquaculture diets, the present study aimed to estimate the protein requirement of curimatãpacu fed with diets containing two lipid levels. Thus, eight experimental diets were formulated to contain 20, 25, 30 and 35% of crude protein (CP) associated to 11 and 15% of crude lipids (CL) were formulated, constituting a completely randomized factorial design (4 CP x 2 CL) with three replicates per treatment. The juveniles (3.6 ± 0.01 g) were fed daily with 6% of the biomass, three times a day (08:00, 12:00 and 16:00 h) for 70 days. The protein requirement was estimated by the combination of the broken line and quadratic regression models. The CP concentration in the diets was the only factor influencing (P < 0.05) the growth and feeding efficiency variables of the fish, without interaction (P > 0.05) with the CL level of the diets. The requirement for weight gain and fish feed efficiency was estimated at 32.5 and 34.5% CP. Protein retention decreased (P < 0.05) in proportion to CP elevation. Fish fed 15% CL had higher (P < 0.05) body lipid deposition. On the other hand, the increase of CP of the diets decreased (P < 0.05) lipid deposition in juveniles. Therefore, it is recommended that young curimatãpacu between 3 and 27 g in weight should be fed diets containing 32.5-34.5% CP and 11% of CL, equivalent to a protein: energy ratio of 22-23 mg kJ−1
author	Duarte,Gabriela Lucena,Jorge E.C. Almeida,Omer Cavalcanti de Bicudo,Álvaro J.A.
author_facet	Duarte,Gabriela Lucena,Jorge E.C. Almeida,Omer Cavalcanti de Bicudo,Álvaro J.A.
author_sort	Duarte,Gabriela
title	Growth and body composition of juvenile curimatã-pacu (Prochilodus argenteus) fed diets with different protein: lipid ratios
title_short	Growth and body composition of juvenile curimatã-pacu (Prochilodus argenteus) fed diets with different protein: lipid ratios
title_full	Growth and body composition of juvenile curimatã-pacu (Prochilodus argenteus) fed diets with different protein: lipid ratios
title_fullStr	Growth and body composition of juvenile curimatã-pacu (Prochilodus argenteus) fed diets with different protein: lipid ratios
title_full_unstemmed	Growth and body composition of juvenile curimatã-pacu (Prochilodus argenteus) fed diets with different protein: lipid ratios
title_sort	growth and body composition of juvenile curimatã-pacu (prochilodus argenteus) fed diets with different protein: lipid ratios
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000100114
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Growth and body composition of juvenile curimatã-pacu (Prochilodus argenteus) fed diets with different protein: lipid ratios

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