Nutritional contribution of fish meal and microalgal biomass produced from two endemic microalgae to the growth of shrimp Penaeus vannamei

ABSTRACT Different sources of microbial biomass have drawn attention as novel ingredients for aquaculture feeds. In the present study, isotopic measurements were applied to determine the contribution of dietary nitrogen supplied by two sources of microalgal biomass and fish meal, to the growth of sh...

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Autores principales:	Pacheco-Vega,Juan Manuel, Gamboa-Delgado,Julián, Alvarado-Ibarra,Angel G., Nieto-López,Martha G., Tapia-Salazar,Mireya, Cruz-Suárez,Lucía Elizabeth
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	microalgae Schizochytrium Grammatophora fish meal white shrimp stable isotopes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100053
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spelling	oai:scielo:S0718-560X20180001000532018-04-17Nutritional contribution of fish meal and microalgal biomass produced from two endemic microalgae to the growth of shrimp Penaeus vannameiPacheco-Vega,Juan ManuelGamboa-Delgado,JuliánAlvarado-Ibarra,Angel G.Nieto-López,Martha G.Tapia-Salazar,MireyaCruz-Suárez,Lucía Elizabeth microalgae Schizochytrium Grammatophora fish meal white shrimp stable isotopes ABSTRACT Different sources of microbial biomass have drawn attention as novel ingredients for aquaculture feeds. In the present study, isotopic measurements were applied to determine the contribution of dietary nitrogen supplied by two sources of microalgal biomass and fish meal, to the growth of shrimp Penaeus vannamei. Microalgae Schizochytrium sp. and Grammatophora sp. were isolated from the Sea of Cortez and massively cultured to obtain sufficient biomass. Experimental diets were formulated with low levels of microalgal biomass replacing 5 and 10% of fish meal nitrogen. Nitrogen stable isotope values were determined in ingredients, diets, and shrimp to estimate the relative contributions of the dietary nitrogen and dry matter supplied by these ingredients to the somatic growth. At the end of a feeding trial, significant differences were observed in mean final weight gain. Dietary nitrogen contributions from microalgae were similar to established dietary proportions, but when estimated on a dry matter basis, nutritional contributions were different for a diet containing 10% of Schizochytrium, which contributed 24% of dry matter to growth. Results demonstrate that low dietary inclusion levels of microalgal biomass elicit similar or higher growth rates than diets based on a fish meal only. Isotopic data indicated that microalgae actually contributed protein to tissue accretion.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100053en10.3856/vol46-issue1-fulltext-7
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	microalgae Schizochytrium Grammatophora fish meal white shrimp stable isotopes
spellingShingle	microalgae Schizochytrium Grammatophora fish meal white shrimp stable isotopes Pacheco-Vega,Juan Manuel Gamboa-Delgado,Julián Alvarado-Ibarra,Angel G. Nieto-López,Martha G. Tapia-Salazar,Mireya Cruz-Suárez,Lucía Elizabeth Nutritional contribution of fish meal and microalgal biomass produced from two endemic microalgae to the growth of shrimp Penaeus vannamei
description	ABSTRACT Different sources of microbial biomass have drawn attention as novel ingredients for aquaculture feeds. In the present study, isotopic measurements were applied to determine the contribution of dietary nitrogen supplied by two sources of microalgal biomass and fish meal, to the growth of shrimp Penaeus vannamei. Microalgae Schizochytrium sp. and Grammatophora sp. were isolated from the Sea of Cortez and massively cultured to obtain sufficient biomass. Experimental diets were formulated with low levels of microalgal biomass replacing 5 and 10% of fish meal nitrogen. Nitrogen stable isotope values were determined in ingredients, diets, and shrimp to estimate the relative contributions of the dietary nitrogen and dry matter supplied by these ingredients to the somatic growth. At the end of a feeding trial, significant differences were observed in mean final weight gain. Dietary nitrogen contributions from microalgae were similar to established dietary proportions, but when estimated on a dry matter basis, nutritional contributions were different for a diet containing 10% of Schizochytrium, which contributed 24% of dry matter to growth. Results demonstrate that low dietary inclusion levels of microalgal biomass elicit similar or higher growth rates than diets based on a fish meal only. Isotopic data indicated that microalgae actually contributed protein to tissue accretion.
author	Pacheco-Vega,Juan Manuel Gamboa-Delgado,Julián Alvarado-Ibarra,Angel G. Nieto-López,Martha G. Tapia-Salazar,Mireya Cruz-Suárez,Lucía Elizabeth
author_facet	Pacheco-Vega,Juan Manuel Gamboa-Delgado,Julián Alvarado-Ibarra,Angel G. Nieto-López,Martha G. Tapia-Salazar,Mireya Cruz-Suárez,Lucía Elizabeth
author_sort	Pacheco-Vega,Juan Manuel
title	Nutritional contribution of fish meal and microalgal biomass produced from two endemic microalgae to the growth of shrimp Penaeus vannamei
title_short	Nutritional contribution of fish meal and microalgal biomass produced from two endemic microalgae to the growth of shrimp Penaeus vannamei
title_full	Nutritional contribution of fish meal and microalgal biomass produced from two endemic microalgae to the growth of shrimp Penaeus vannamei
title_fullStr	Nutritional contribution of fish meal and microalgal biomass produced from two endemic microalgae to the growth of shrimp Penaeus vannamei
title_full_unstemmed	Nutritional contribution of fish meal and microalgal biomass produced from two endemic microalgae to the growth of shrimp Penaeus vannamei
title_sort	nutritional contribution of fish meal and microalgal biomass produced from two endemic microalgae to the growth of shrimp penaeus vannamei
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100053
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Nutritional contribution of fish meal and microalgal biomass produced from two endemic microalgae to the growth of shrimp Penaeus vannamei

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