Antibacterial potential of commercial and wild lactic acid bacteria strains isolated from ovine and caprine raw milk against Mycoplasma agalactiae

The complexity of fighting contagious agalactia (CA) has raised the necessity of alternative antimicrobial therapies, such as probiotics. Lactic acid bacteria (LAB) are present in the mammary gland of small ruminants and their antimicrobial effect have been previously described against species like...

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Published in:Frontiers in veterinary science 2023-06, Vol.10, p.1197701-1197701
Main Authors: Toquet, Marion, Bataller, Esther, Gomis, Jesús, Sánchez, Antonio, Toledo-Perona, Raquel, De la Fe, Christian, Corrales, Juan Carlos, Gómez-Martín, Ángel
Format: Article
Language:English
Subjects:
antimicrobial activity
contagious agalactia
Enterococcus
Lactobacillus
mastitis
Mycoplasma agalactiae
Veterinary Science
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Summary:The complexity of fighting contagious agalactia (CA) has raised the necessity of alternative antimicrobial therapies, such as probiotics. Lactic acid bacteria (LAB) are present in the mammary gland of small ruminants and their antimicrobial effect have been previously described against species like but never against (Ma). This study aims to evaluate the antimicrobial activity against Ma of ovine and caprine LAB strains and a human commercial probiotic (L2) of spp. A total of 63 possible LAB strains were isolated from nine ovine and caprine farms in Spain, three isolates (33B, 248D, and 120B) from the 63 strains were selected, based on their capacity to grow in a specific medium , for an experiment to assess their antimicrobial activity against Ma in Ultra High Temperature (UHT) processed goat milk (GM). A women commercial vaginal probiotic was also included in the study. The inoculum of L2 was prepared at a concentration of 3.24 × 10   CFU/mL and the average concentration of the inoculum of the wild LAB varied from 7.9 × 10 to 8.4 × 10   CFU/mL. The commercial probiotic L2 significantly reduced the concentration of Ma to 0.000 log CFU/mL (  
ISSN:2297-1769
2297-1769
DOI:10.3389/fvets.2023.1197701