The potential of indigenous lactic acid bacteria against Salmonella sp.

Abstract

Lactic acid bacteria are a group of bacteria capable of producing lactic acid, H2O2, diacetyl and bacteriocins. Isolation purpose of lactic acid bacteria is to produce antimicrobial that will be used to inhibit the growth of pathogenic bacteria in the digestive tract. The study was conducted to isolate indigenous lactic acid bacteria from health broiler intestine and to investigate the ability to inhibit the growth of Salmonella sp. This study used 144 DOC (Day Old Chicken) final stock “Arbor acres CP 707”. Lactic acid bacteria 109 cell · mL–1 administered through drinking water daily and twice per week for 5 wk. The research results showed that the potential as indigenous lactic acid bacteria were Lactobacillus spp., Streptococcus spp., and Bifidobacterium bifidum. The administration of lactic acid bacteria with a frequency of daily was effective to decrease the population of Salmonella sp. in the intestines of broiler chickens.