Feed supplementation with avian origin strains of Propionibacterium acidipropionici contributes to mucosa development in early stages of rearing broiler chickens

BABOT, JAIME; LORENZO PISARELLO, MARÍA JOSÉ; ZÁRATE, GABRIELA; PEREZ CHAIA, ADRIANA; LORENZO PISARELLO, MARIA JOSE; ARGANARAZ MARTINEZ, ELOY; APELLA, MARIA CRISTINA

Beneficial Microbes

WAGENINGEN ACADEMIC PUBLISHERS

Lugar: AE Wageningen; Año: 2016 vol. 7 p. 687 - 698

1876-2883

Different studies in animal rearing claim the probiotic potential of species of the genus Propionibacterium. The effects of strains of Propionibacterium acidipropionici isolated from 21 poultry intestine on microbiota activity and intestinal mucosa development were investigated in the early stage of rearing chicks and the safety of the dose used was investigated. The strains P. acidipropionici LET 105 and LET 107, administered as monoculture to chicks from the 1st to 14th days of life in a daily dose of 10 Exp.6 CFU/mL administered in the drinking water resulted harmless. The animals arrived at the expected weight for age and no differences were observed with respect to the food intake and water consumption related to control without bacteria administration. The analysis of microbiota composition revealed the presence of propionibacteria at the middle and end of the trial only in treated groups. Normal development of lactic acid bacteria and bifidobacteria, and slow colonization by Bacteroides at the 7th day of the study was observed in the same groups. Analysis of the organic acids concentrations in the cecal content of birds revealed higher lactic acid and lower butyric acid production. Lower short chain fatty acids total concentration than expected during treatment was related to a better development of the gut mucosa. Increase in length of villus-crypt units, goblet cells counts and neutral mucins production were evidenced. Higher mucus secretion produced by dietary supplementation with propionibacteria could provide increased protection against pathogens.