Table 1. Strains used in the study.

Strain	Origin
Lb. rhamnosus ATCC 7469	American Type Culture Collection (ATCC)
Lc. lactis subsp. lactis ATCC 11454
Lb. plantarum 2/37	Quarter milk samples
Lc. lactis subsp. lactis 33/30	(No pathogen detected, somatic cell count < 100.000/mL)
Lb. paracasei subsp. paracasei 35/37
Lb. paracasei subsp. paracasei 42/37
Lb. brevis 46/30
Lb. paracasei subsp. paracasei 78/37
Lb. brevis 104/37
Lb. plantarum 118/37
Lb. paracasei subsp. paracasei 123/37
Lb. buchneri SX.A.2	Bulk milk sample
Lb. plantarum 6E	Bedding sample