Dietary inclusion of Schizochytrium limacinum meal can maintain key productive parameters of pink cusk-eel (Genypterus blacodes) juveniles with a reduction in fish oil

ABSTRACT The pink cusk-eel (Genypterus blacodes) is a promising new candidate species to diversify cold-water aquaculture further. However, there are several knowledge gaps to establish a commercial-scale cultivation strategy, with optimum feed formulation being one of the main remaining challenges....

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Autores principales:	Serrano,Edison, Simpfendorfer,Robert, Uribe,Juan Carlos, Medina,Alberto, Castro,Karla, Morales,Rodrigo, Davies,Simon J.
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2021
Materias:	Genypterus blacodes Schizochytrium microalgae growth performance feed efficiency aquaculture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000500804
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spelling	oai:scielo:S0718-560X20210005008042021-11-25Dietary inclusion of Schizochytrium limacinum meal can maintain key productive parameters of pink cusk-eel (Genypterus blacodes) juveniles with a reduction in fish oilSerrano,EdisonSimpfendorfer,RobertUribe,Juan CarlosMedina,AlbertoCastro,KarlaMorales,RodrigoDavies,Simon J. Genypterus blacodes Schizochytrium microalgae growth performance feed efficiency aquaculture ABSTRACT The pink cusk-eel (Genypterus blacodes) is a promising new candidate species to diversify cold-water aquaculture further. However, there are several knowledge gaps to establish a commercial-scale cultivation strategy, with optimum feed formulation being one of the main remaining challenges. This study aimed to assess the dietary inclusion of Schizochytrium limacinum heterotrophic microalgae meal as a sustainable source of docosahexaenoic acid on fish growth and the condition status of pink cusk-eel juveniles. Three extruded diets were formulated to contain 0, 5 and 10% of dried algae and fed to duplicate groups of fish twice daily until apparent satiation during the 12-week trial. On termination of the feeding trial period, the average live weight gain did not show statistically significant differences between the three groups of juvenile fish, achieving an increase in weight of about two times at the end of the trial. Similarly, the protein efficiency and feed conversion ratios did not show significant differences among the experimental diets. On the contrary, a significant reduction in feed intake was observed as the dietary inclusion of microalgae meal increased. These results indicate that S. limacinum meal is a sustainable alternative ingredient for the dietary substitution of fish oil in commercial feed for G. blacodes at limited inclusion.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.49 n.5 20212021-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000500804en10.3856/vol49-issue5-fulltext-2664
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Genypterus blacodes Schizochytrium microalgae growth performance feed efficiency aquaculture
spellingShingle	Genypterus blacodes Schizochytrium microalgae growth performance feed efficiency aquaculture Serrano,Edison Simpfendorfer,Robert Uribe,Juan Carlos Medina,Alberto Castro,Karla Morales,Rodrigo Davies,Simon J. Dietary inclusion of Schizochytrium limacinum meal can maintain key productive parameters of pink cusk-eel (Genypterus blacodes) juveniles with a reduction in fish oil
description	ABSTRACT The pink cusk-eel (Genypterus blacodes) is a promising new candidate species to diversify cold-water aquaculture further. However, there are several knowledge gaps to establish a commercial-scale cultivation strategy, with optimum feed formulation being one of the main remaining challenges. This study aimed to assess the dietary inclusion of Schizochytrium limacinum heterotrophic microalgae meal as a sustainable source of docosahexaenoic acid on fish growth and the condition status of pink cusk-eel juveniles. Three extruded diets were formulated to contain 0, 5 and 10% of dried algae and fed to duplicate groups of fish twice daily until apparent satiation during the 12-week trial. On termination of the feeding trial period, the average live weight gain did not show statistically significant differences between the three groups of juvenile fish, achieving an increase in weight of about two times at the end of the trial. Similarly, the protein efficiency and feed conversion ratios did not show significant differences among the experimental diets. On the contrary, a significant reduction in feed intake was observed as the dietary inclusion of microalgae meal increased. These results indicate that S. limacinum meal is a sustainable alternative ingredient for the dietary substitution of fish oil in commercial feed for G. blacodes at limited inclusion.
author	Serrano,Edison Simpfendorfer,Robert Uribe,Juan Carlos Medina,Alberto Castro,Karla Morales,Rodrigo Davies,Simon J.
author_facet	Serrano,Edison Simpfendorfer,Robert Uribe,Juan Carlos Medina,Alberto Castro,Karla Morales,Rodrigo Davies,Simon J.
author_sort	Serrano,Edison
title	Dietary inclusion of Schizochytrium limacinum meal can maintain key productive parameters of pink cusk-eel (Genypterus blacodes) juveniles with a reduction in fish oil
title_short	Dietary inclusion of Schizochytrium limacinum meal can maintain key productive parameters of pink cusk-eel (Genypterus blacodes) juveniles with a reduction in fish oil
title_full	Dietary inclusion of Schizochytrium limacinum meal can maintain key productive parameters of pink cusk-eel (Genypterus blacodes) juveniles with a reduction in fish oil
title_fullStr	Dietary inclusion of Schizochytrium limacinum meal can maintain key productive parameters of pink cusk-eel (Genypterus blacodes) juveniles with a reduction in fish oil
title_full_unstemmed	Dietary inclusion of Schizochytrium limacinum meal can maintain key productive parameters of pink cusk-eel (Genypterus blacodes) juveniles with a reduction in fish oil
title_sort	dietary inclusion of schizochytrium limacinum meal can maintain key productive parameters of pink cusk-eel (genypterus blacodes) juveniles with a reduction in fish oil
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000500804
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Dietary inclusion of Schizochytrium limacinum meal can maintain key productive parameters of pink cusk-eel (Genypterus blacodes) juveniles with a reduction in fish oil

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