A bacteriological study was performed on 226 semen samples from healthy boars collected from five pig farms in two Venezuelan states. The evaluation of fresh and diluted semen showed a wide variety of bacteria range from normal and potentially pathogenic flora.
E. coli was the most common bacteria isolated, followed by
Staphylococcus epidermidis
,
Proteus vulgaris
,
Streptococcus,
Streptococcus spp. β
hemolytic,
Staphylococcus aureus
and
Psedomonas aeruginosa
. The bacteria were found to be resistant to the antimicrobials normally used in commercial diluents semen.