LACTIC ACID BACTERIA CHARATERISTICS IN PROBIOTIC FOR PREVENTING AND TREATING PIG DIGESTIVE DISORDER
Abstract
From the strains of lactic acid bacterium in the Laboratory of Microbiology, Ho Chi Minh City University
of Education, 03 of those strains with activated probiotic have been chosen: Lactobacillus agillis (B), Lactobacillus salivarius (N4), Lactobacillus acidophilus (L2). These strains of bacteria have high lactic acid production capacity, strong antagonistic activity, and wide antibacterial spectrum. Specially, they have strong
resistance to two bacterial strains causing digestive disorder in pigs such as E.coli and Samonella choleraesuis which resist the four important types of antibiosis including Neomycin (Ne), Nalidixid acid (Ng), Kanamycin (Kn) and Gentamycin (Ge). The optimal conditions for their receiving biomass are: Tomato medium with temperature: 30 - 40oC; Initial pH: 5,5 -6,5; Yeast extract: 1,0 - 2,0%; Saccaroza: 1,0 - 2,0%; The optimal time for receiving biomass is from 24 - 36 hours. On this basis, the biomass of three lactic bacterial strains were studied and used to produce probiotic products for preventing and treating the digestive disorder in pigs.
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