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Effect of administration of acid- and bile-tolerant lactobacilli on pigs intestinal microbial population

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Abstract:

ABSTRACT

The effects of the administration of four Lactobacillus strains as probiotics on the constitution of microbial populations in the intestine of pigs were investigated by using a litter of pigs. The experimental group was fed a diet blended with the freeze-dried powder containing lactobacilli at a concentration of 0.2% (W/W). After 4 weeks of probiotics administration, the total viable count of anaerobes in the feces was not significantly different between the pigs fed a diet supplemented with probiotics and the pigs given the non-supplemented diet. However, viable counts of eubacteria were significantly higher (P < 0.01) in the feces of pigs fed a diet supplemented with probiotics than in the pigs given the non-supplemented diet. Conversely, viable counts of clostridia were significantly lower (P < 0.01) in the feces of pigs fed a diet supplemented with probiotics than the pigs given the non-supplemented diet. The total volatile fatty acid concentrations in the feces of pigs that were given a diet supplemented with probiotics were significantly lower (P < 0.05) than those given the non-supplemented diet. Further, the molar proportion of n-butyric acids in the feces of pigs that were given a diet supplemented with probiotics, was significantly lower (P < 0.05) than those given the non-supplemented diet.

Keywords: intestinal bacteria; lactobacilli; pig; probiotics; volatile fatty acids

Document Type: Research Article

DOI: https://doi.org/10.1046/j.1344-3941.2002.00068.x

Affiliations: 1: School of Agriculture, Ibaraki University, Ami-machi, Ibaraki-ken and 2: National Institute of Livestock and Grassland Science, Tsukuba Norin Kenkyu Danchi, Ibaraki-ken, Japan

Publication date: 2002-12-01

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