SUMMARY Uterine samples from 60 vaginal Swabs were collected from healthy normal bovine (31 COWS and 29 buffaloes). Out of the total examined samples, 2 buffaloes proved to be sterile while all COWS samples proved to be bacteri ologically positive.
A variety of microorganisms were isolated from non-pregnant buffaloes and cows. The most important isolants were: Staph. aureus, Staph. epdernidis, Sarcina lutea, Str. bovis, alphahaemolytic streptococci, C. bovis, unc lassified corynebacteriu, E.coli, aerobacter, anthracoides and yeasts. The results revealed the fact ht ការ the oestrous phase, the percentage of bacte ria isolated was much lower than that obtai ned during dioestrus in buffaloes anc cattle, It was also found that animals suffering fr om inactive ovaries showed high incidence of bacteria than those affected with follicular cyst.