Aislamiento, selección y caracterización de cepas del género lactobacillus aisladas de líquido ruminal vacuno en la zona Sur del Lago, Venezuela

Lactic acid bacteria of Lactobacillus genus were isolated from cattle rumen fluid in the Colon, was carried out by sampling animals post-mortem at the at slaughter and distribution service meat “FIBASA”. These samples were diluted to different concentrations ranging from 10-1 - 10-7 and plated on, thereby obtaining bacterial colonies, which were evaluated in vitro with growth tests, shape, color, size, mobility, presence of spores, lactic acid production, fermentation of carbohydrates, acid resistance (2.5 to 6.5) and temperature profiles from (4 °C - 50 °C). This was achieved characterize two strains (L1 and L2), whose biochemical and morphological analysis places them within the genus Lactobacillus, These strains have high antagonistic activity against pathogenic bacteria which makes them a probiotic potential, for animal feed.