title: Stimulation of indigenous lactobacilli by fermented milk prepared with probiotic bacterium, Lactobacillus delbrueckii subsp. bulgaricus strain 2038, in the pigs.
abstract: The aim of this study was to evaluate the effect of feeding yoghurt, prepared with Lactobacillus delbrueckii subsp. bulgaricus strain 2038, on indigenous lactobacilli in the pig cecum. Three female pigs fistulated at the cecum were fed 250 g of this yoghurt that contained over 10(11) colony-forming units of L. delbrueckii subsp. bulgaricus strain 2038 with their daily meal for 2 wk. The relative abundance and the composition of cecal lactobacilli was monitored by analysis of bacterial 16S rDNA with real time PCR and amplified bacterial rDNA restriction analysis using Lactobacillus-group specific primers, respectively, for 2 wk prior to, at the end of 2 wk of and 2 wk after the administration of this yoghurt. The relative abundance of lactobacilli was significantly increased by feeding yoghurt (p<0.01), although the bacterial 16S rDNA matching L. delbrueckii subsp. bulgaricus strain 2038 was not detected by amplified bacterial rDNA restriction analysis during this study. The number of operational taxonomic units (OTUs) detected was increased with feeding of the yoghurt in all pigs. At the same time, the estimated cell number of each OTU was increased with feeding of the yoghurt. It is demonstrated that continuous consumption of the probiotic lactobacilli will stimulate the growth of some indigenous lactobacilli and alter the composition of the lactobacilli.
authors.affiliation: Laboratory of Animal Science, Kyoto Prefectural University, Shimogamo, Kyoto 606-8522, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Ohashi
authors.forename: Makoto
authors.initials: M
authors.lastname: Tokunaga
authors.forename: Naoki
authors.initials: N
authors.lastname: Taketomo
authors.forename: Kazunari
authors.initials: K
authors.lastname: Ushida
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D002432:Cecum / Q000382:microbiology; D015169:Colony Count, Microbial; D043302:Cultured Milk Products / Q000382:microbiology*; D004269:DNA, Bacterial / Q000032:analysis; D005260:Female; D005516:Food Microbiology; D007778:Lactobacillus / Q000145:classification / Q000254:growth & development* / Q000302:isolation & purification*; D007780:Lacticaseibacillus casei / Q000254:growth & development / Q000302:isolation & purification; D048668:Lactobacillus delbrueckii / Q000254:growth & development / Q000302:isolation & purification; D023421:Models, Animal; D016133:Polymerase Chain Reaction; D019936:Probiotics; D012336:RNA, Ribosomal, 16S / Q000032:analysis; D013552:Swine; D015014:Yogurt / Q000382:microbiology
chemical_list: D004269:DNA, Bacterial; D012336:RNA, Ribosomal, 16S