In Vitro Interaction between and Small Ruminants' Endogenous Bacterial Strains of spp. and Coagulase-Negative .

Microorganisms

Microbiological Agents Associated with Animal Reproduction (ProVaginBIO) Research Group, Departamento Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, Carrer Tirant lo Blanc, 7, 46115 Valencia, Spain.

Published: February 2024

Recently, an antimicrobial effect on (Ma), the main etiological agent of contagious agalactia (CA), was reported in vitro with strains of spp. from ovine and caprine milk. The aim of this work was to evaluate the interaction of Ma with the same spp. isolated from other anatomical locations (vagina) and other bacterial populations present in milk, such as coagulase-negative staphylococci (CNS). The vaginal strains and the raw milk CNS were isolated from sheep and goats. Experimental in vitro conditions were prepared to assess the growth of Ma with and without the presence of these strains. The selected vaginal strains were identified as and and the strains of CNS were identified as . Different interactions of Ma with ovine and caprine wild vaginal strains of and dairy strains of CNS are described for the first time: Ma can grow exponentially during 15 h with the selected strains, although with certain strains, its optimal growth can be negatively affected ( < 0.05). The colonization and/or excretion of Ma could, therefore, be influenced by certain endogenous bacterial strains. Our results increase the knowledge about possible bacterial ecology dynamics surrounding CA.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10891560PMC
http://dx.doi.org/10.3390/microorganisms12020406DOI Listing

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