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        • Universidad Jorge Tadeo Lozano (Colombia)
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        • Universidad Jorge Tadeo Lozano (Colombia)
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        Bacillus cereus and Bacillus subtilis used as probiotics in rotifer (Brachionus plicatilis) cultures

        Registro en:
        https://www.longdom.org/open-access/bacillus-cereus-and-bacillus-subtilis-used-as-probiotics-in-rotifer-brachionus-plicatilis-cultures-2155-9546.S1-007.pdf
        http://hdl.handle.net/20.500.12010/9914
        10.4172/2155-9546.S1-007
        http://repositorioslatinoamericanos.uchile.cl/handle/2250/3500720
        Autor
        Murillo, Iván
        Villamil, Luisa
        Institución
        • Universidad Jorge Tadeo Lozano (Colombia)
        Resumen
        Since live food is a key factor in fish and invertebrate larvae rearing, the objective of this study was to evaluate the probiotic potential of two Gram positive Bacillus species: Bacillus cereus (CCBM-2) and Bacillus subtilis (CCBM64), originally isolated from marine sediments in the Colombian Caribbean, in rotifer Brachionus plicatilis cultures. The enzymatic activity and antibacterial activity against pathogens of B. cereus and B. subtilis were measured in vitro. Direct supplementation of the rotifer culture water with both bacteria was also carried out and the effect was measured in vivo by estimating the density of rotifers and bacterial counts in the culture. The results indicated that extracellular products of both bacteria strongly inhibited the growth of Aeromonas hydrophila and Vibrio alginolyticus isolated from diseased fish. Enzyme API ZYM assays showed that both bacteria have esterase lipase, leucine arylamidase, acid phosphatase, lipase, and Naphthol-AS-BI- phosphohydrolase activities. Furthermore, it was observed that the addition of B. subtilis to the rotifer culture water resulted in a significant increase in rotifer numbers and a reduction of Vibrio levels. B. subtilis appears to be a promising probiotic for rotifer cultures, but further research is required to determine the capacity in controlling A. hydrophila and V. alginolyticus when administered via rotifers to fish larvae.
        Materias
        Probiotic
        Rotifers
        Brachionus plicatili
        Bacillus cereus
        Bacillus subtilis

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        Red de Repositorios Latinoamericanos
        + de 8.000.000 publicaciones disponibles
        500 instituciones participantes
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Ingreso Administradores
        Colecciones destacadas
        • Tesis latinoamericanas
        • Tesis argentinas
        • Tesis chilenas
        • Tesis peruanas
        Nuevas incorporaciones
        • Argentina
        • Brasil
        • Colombia
        • México
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Red de Repositorios Latinoamericanos | 2006-2018