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Revista Colombiana de Biotecnología
versión impresa ISSN 0123-3475
Resumen
LARA MANTILLA, Cecilia y BURGOS PORTACIO, Ángela. Probiotic potential of native strains, for as feed additives for poultry. Rev. colomb. biotecnol [online]. 2012, vol.14, n.1, pp.31-40. ISSN 0123-3475.
Was evaluated in vitro the probiotic potential of native strains isolated from feces of wild chickens (Gallus gallus) belonging to the genera Lactobacillus sp., Bacillus sp. and Saccharomyces ; probiotic activity was determined by testing acid resistance (pH 3, 4, 5.6, 7), bile salts (0,05, 0,1, 0,15, 0,3%), tolerance to NaCl (2, 4, 7,10%), antagonistic activity (Salmonella spp, E. coli), production gas (glucose), growth temperatures (28, 37, 43 ° C) and growth capacity. The most tolerant strains were identified by biochemical tests and carbohydrate fermentation. As a result it was found that three microorganisms: Saccharomyces sp. (3), Bacillus sp. (7) and Lactobacillus sp. (14) have probiotic properties.
Palabras clave : Gallus gallus; Saccharomyces sp; Bacillus sp; Lactobacillus sp; microbial additives.