*4.1. Bacterial Strains*

Eighty *Lactobacillus* strains of our collection isolated from faeces samples of zoo animals were used for the studies. The strains were identified by the 16S rDNA sequence extracted from pure bacterial cultures and sequenced by BaseClear (Table 1). In addition, 25 other *Lactobacillus* strains have been obtained from BCCM (Belgian Coordinated Collections of Microorganisms) (Table 2). The *Lactobacillus* strains stored at −80 ◦C in 43.5% glycerine were thawed on ice before culturing.
