Effects of bacilli, molasses, and reducing feeding rate on biofloc formation, growth, and gene expression in Litopenaeus vannamei cultured with zero water exchange

ABSTRACT The effects of reducing feeding rate and molasses on water quality, growth, and gene expression of Litopenaeus vannamei were evaluated in a super intensive system with zero water exchange. A bioassay of 35 days (0,75 ± 0,22 g, 36 shrimp tank-1, 450 shrimp m-3) with treatments in triplicate...

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Autores principales:	Luna-González,Antonio, Ávila-Leal,José, Fierro-Coronado,Jesús A., Álvarez-Ruiz,Píndaro, Esparza-Leal,Héctor, Escamilla-Montes,Ruth, Flores-Miranda,María del Carmen, Montiel-Montoya,Jorge, López-Álvarez,Ely S.
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2017
Materias:	Bacillus licheniformis Litopenaeus vannamei bioflocs gene expression molasses water quality
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000500900
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spelling	oai:scielo:S0718-560X20170005009002017-12-07Effects of bacilli, molasses, and reducing feeding rate on biofloc formation, growth, and gene expression in Litopenaeus vannamei cultured with zero water exchangeLuna-González,AntonioÁvila-Leal,JoséFierro-Coronado,Jesús A.Álvarez-Ruiz,PíndaroEsparza-Leal,HéctorEscamilla-Montes,RuthFlores-Miranda,María del CarmenMontiel-Montoya,JorgeLópez-Álvarez,Ely S. Bacillus licheniformis Litopenaeus vannamei bioflocs gene expression molasses water quality ABSTRACT The effects of reducing feeding rate and molasses on water quality, growth, and gene expression of Litopenaeus vannamei were evaluated in a super intensive system with zero water exchange. A bioassay of 35 days (0,75 ± 0,22 g, 36 shrimp tank-1, 450 shrimp m-3) with treatments in triplicate was performed: I) 100% commercial feed (control group) with water exchange; II) 100% commercial feed without water exchange; III) 100% commercial feed + Bacillus licheniformis BCR 4-3 + molasses without water exchange; IV) 90% commercial feed + B. licheniformis BCR 4-3 + molasses without water exchange, and V) 80% commercial feed + B. licheniformis BCR 4-3 + molasses without water exchange. Shrimp survival, weight, nitrogenous wastes, settleable solids (SS), and the relative expression (RT-qPCR) of stress and digestive genes were determined. Shrimp survival was 100% in all treatments. The reduced diet, bioflocs, and bacilli did not affect shrimp growth. The culture conditions reduced nitrogenous wastes and modulated mRNA expression of trypsin, chymotrypsin, and heat shock protein 70. Reduced feed ration can help to maintain water quality and lower costs in intensive shrimp cultures with bioflocs.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.45 n.5 20172017-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000500900en10.3856/vol45-issue5-fulltext-4
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Bacillus licheniformis Litopenaeus vannamei bioflocs gene expression molasses water quality
spellingShingle	Bacillus licheniformis Litopenaeus vannamei bioflocs gene expression molasses water quality Luna-González,Antonio Ávila-Leal,José Fierro-Coronado,Jesús A. Álvarez-Ruiz,Píndaro Esparza-Leal,Héctor Escamilla-Montes,Ruth Flores-Miranda,María del Carmen Montiel-Montoya,Jorge López-Álvarez,Ely S. Effects of bacilli, molasses, and reducing feeding rate on biofloc formation, growth, and gene expression in Litopenaeus vannamei cultured with zero water exchange
description	ABSTRACT The effects of reducing feeding rate and molasses on water quality, growth, and gene expression of Litopenaeus vannamei were evaluated in a super intensive system with zero water exchange. A bioassay of 35 days (0,75 ± 0,22 g, 36 shrimp tank-1, 450 shrimp m-3) with treatments in triplicate was performed: I) 100% commercial feed (control group) with water exchange; II) 100% commercial feed without water exchange; III) 100% commercial feed + Bacillus licheniformis BCR 4-3 + molasses without water exchange; IV) 90% commercial feed + B. licheniformis BCR 4-3 + molasses without water exchange, and V) 80% commercial feed + B. licheniformis BCR 4-3 + molasses without water exchange. Shrimp survival, weight, nitrogenous wastes, settleable solids (SS), and the relative expression (RT-qPCR) of stress and digestive genes were determined. Shrimp survival was 100% in all treatments. The reduced diet, bioflocs, and bacilli did not affect shrimp growth. The culture conditions reduced nitrogenous wastes and modulated mRNA expression of trypsin, chymotrypsin, and heat shock protein 70. Reduced feed ration can help to maintain water quality and lower costs in intensive shrimp cultures with bioflocs.
author	Luna-González,Antonio Ávila-Leal,José Fierro-Coronado,Jesús A. Álvarez-Ruiz,Píndaro Esparza-Leal,Héctor Escamilla-Montes,Ruth Flores-Miranda,María del Carmen Montiel-Montoya,Jorge López-Álvarez,Ely S.
author_facet	Luna-González,Antonio Ávila-Leal,José Fierro-Coronado,Jesús A. Álvarez-Ruiz,Píndaro Esparza-Leal,Héctor Escamilla-Montes,Ruth Flores-Miranda,María del Carmen Montiel-Montoya,Jorge López-Álvarez,Ely S.
author_sort	Luna-González,Antonio
title	Effects of bacilli, molasses, and reducing feeding rate on biofloc formation, growth, and gene expression in Litopenaeus vannamei cultured with zero water exchange
title_short	Effects of bacilli, molasses, and reducing feeding rate on biofloc formation, growth, and gene expression in Litopenaeus vannamei cultured with zero water exchange
title_full	Effects of bacilli, molasses, and reducing feeding rate on biofloc formation, growth, and gene expression in Litopenaeus vannamei cultured with zero water exchange
title_fullStr	Effects of bacilli, molasses, and reducing feeding rate on biofloc formation, growth, and gene expression in Litopenaeus vannamei cultured with zero water exchange
title_full_unstemmed	Effects of bacilli, molasses, and reducing feeding rate on biofloc formation, growth, and gene expression in Litopenaeus vannamei cultured with zero water exchange
title_sort	effects of bacilli, molasses, and reducing feeding rate on biofloc formation, growth, and gene expression in litopenaeus vannamei cultured with zero water exchange
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2017000500900
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Effects of bacilli, molasses, and reducing feeding rate on biofloc formation, growth, and gene expression in Litopenaeus vannamei cultured with zero water exchange

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