Quantification of intestinal bacteria, operating cost and performance of fingerlings Nile tilapia subjected to probiotics

The use of microorganisms of the genus Bacillus in aquaculture is a nutritional management practice that is rapidly expanding in regions with intensive fish farming. This study aimed to quantify the total bacteria and total coliforms from the intestinal microbiota and estimate the partial operating...

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Autores principales:	Garcia-Marengoni,Nilton, Menezes-Albuquerque,Daniele
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2015
Materias:	economic analysis microbiology tilapia culture probiotics aquaculture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2015000200013
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spelling	oai:scielo:S0718-560X20150002000132015-06-01Quantification of intestinal bacteria, operating cost and performance of fingerlings Nile tilapia subjected to probioticsGarcia-Marengoni,NiltonMenezes-Albuquerque,Daniele economic analysis microbiology tilapia culture probiotics aquaculture The use of microorganisms of the genus Bacillus in aquaculture is a nutritional management practice that is rapidly expanding in regions with intensive fish farming. This study aimed to quantify the total bacteria and total coliforms from the intestinal microbiota and estimate the partial operating costs and growth performance of Nile tilapia (Oreochromis niloticus) of the GIFT strain. A total of 1,200 post-larvae (24.7 ± 0.50 mg) were distributed into 24 aquaria (0.03-m³ capacity) within a completely randomized design in 2 x 3 factorial (phase x bacteria), with four replications. Each aquarium, containing 50 post-larvae (sex reversal phase) or 30 fish (fingerlings phase), it was considered to be an experimental unit, consisting of three treatments (diet+Bacillus subtilis C-3102, diet+Bacillus cereus var. toyoi and diet without probiotic addition). The quantification of the total bacteria and total coliforms of the intestinal microbiota of tilapia were influenced (P < 0.05) by the stages of culture. The bacterial count was not influenced (P > 0.05) by adding probiotics in the diets and no effect of the interaction between phase and bacteria was observed. The weight gain, average daily weight gain, specific growth rate and apparent feed conversion were not affected (P > 0.05) by inclusion of probiotics as part of the diets. The inclusion of B. subtilis and B. cereus as part of diets for Nile tilapia promotes intestinal colonization and improves the survival rate without negatively influencing the feed intake, total biomass, gross revenue and partial operating costs and net revenue. Therefore it recommends the use of these probiotics to growth of tilapia fingerlings Nile, GIFT strain.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.43 n.2 20152015-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2015000200013en10.3856/vol43-issue2-fulltext-13
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	economic analysis microbiology tilapia culture probiotics aquaculture
spellingShingle	economic analysis microbiology tilapia culture probiotics aquaculture Garcia-Marengoni,Nilton Menezes-Albuquerque,Daniele Quantification of intestinal bacteria, operating cost and performance of fingerlings Nile tilapia subjected to probiotics
description	The use of microorganisms of the genus Bacillus in aquaculture is a nutritional management practice that is rapidly expanding in regions with intensive fish farming. This study aimed to quantify the total bacteria and total coliforms from the intestinal microbiota and estimate the partial operating costs and growth performance of Nile tilapia (Oreochromis niloticus) of the GIFT strain. A total of 1,200 post-larvae (24.7 ± 0.50 mg) were distributed into 24 aquaria (0.03-m³ capacity) within a completely randomized design in 2 x 3 factorial (phase x bacteria), with four replications. Each aquarium, containing 50 post-larvae (sex reversal phase) or 30 fish (fingerlings phase), it was considered to be an experimental unit, consisting of three treatments (diet+Bacillus subtilis C-3102, diet+Bacillus cereus var. toyoi and diet without probiotic addition). The quantification of the total bacteria and total coliforms of the intestinal microbiota of tilapia were influenced (P < 0.05) by the stages of culture. The bacterial count was not influenced (P > 0.05) by adding probiotics in the diets and no effect of the interaction between phase and bacteria was observed. The weight gain, average daily weight gain, specific growth rate and apparent feed conversion were not affected (P > 0.05) by inclusion of probiotics as part of the diets. The inclusion of B. subtilis and B. cereus as part of diets for Nile tilapia promotes intestinal colonization and improves the survival rate without negatively influencing the feed intake, total biomass, gross revenue and partial operating costs and net revenue. Therefore it recommends the use of these probiotics to growth of tilapia fingerlings Nile, GIFT strain.
author	Garcia-Marengoni,Nilton Menezes-Albuquerque,Daniele
author_facet	Garcia-Marengoni,Nilton Menezes-Albuquerque,Daniele
author_sort	Garcia-Marengoni,Nilton
title	Quantification of intestinal bacteria, operating cost and performance of fingerlings Nile tilapia subjected to probiotics
title_short	Quantification of intestinal bacteria, operating cost and performance of fingerlings Nile tilapia subjected to probiotics
title_full	Quantification of intestinal bacteria, operating cost and performance of fingerlings Nile tilapia subjected to probiotics
title_fullStr	Quantification of intestinal bacteria, operating cost and performance of fingerlings Nile tilapia subjected to probiotics
title_full_unstemmed	Quantification of intestinal bacteria, operating cost and performance of fingerlings Nile tilapia subjected to probiotics
title_sort	quantification of intestinal bacteria, operating cost and performance of fingerlings nile tilapia subjected to probiotics
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2015000200013
work_keys_str_mv	AT garciamarengoninilton quantificationofintestinalbacteriaoperatingcostandperformanceoffingerlingsniletilapiasubjectedtoprobiotics AT menezesalbuquerquedaniele quantificationofintestinalbacteriaoperatingcostandperformanceoffingerlingsniletilapiasubjectedtoprobiotics
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Quantification of intestinal bacteria, operating cost and performance of fingerlings Nile tilapia subjected to probiotics

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