Dynamics of the susceptibility to different antibiotics and chemical-therapy treatments of isolated germs from puerperal cow genital secretions

Abstract

The study was conducted on a group of 10 cows, belonging to Bălţată cu Negru Românească breed, at the Cattle Research and Development Station of Dancu , Iaşi district. Genital secretions were sampled from puerperal cows (first 4 post-partum weeks), for determining the uterine bacterial flora and germ susceptibility to different antimicrobial products. The obtained results have shown a lower germ susceptibility in the first post-partum week, compared to the next weeks. In weeks 2,3 and 4 post-partum , the mean values of germ susceptibility to antibiotics had very high levels (90-100%) to Rifampine, Erythromycin, Cephalotin, average levels (70-83.3%) to Amoxicillin, Kanamycyn, Chloramphenicol, Streptomycin, Gentamicyn, bacteria showing resistance to Penicillin, Oxacicllin, Sulphametazol, Methycillin. The most frequent bacterium isolated from genital secretions of cows with inflammatory genital troubles was Arcanobacterium pyogenes, in single bacterial colony (31.6%) or in mixed bacterial colony with E.coli (5.3%).