Ling G V, Ruby A L
Am J Vet Res. 1978 Apr;39(4):695-8.
Staphylococcus aureus and Mycoplasma spp were the most frequently isolated aerobic microorganisms in specimens obtained from the prepuce and the urethra of 20 normal, adult male dogs. Staphylococcus aureus and Streptococcus canis were the most frequently isolated bacteria in specimens collected from the vagina (in the area of the urethral orifice) of 20 normal intact bitches and 20 spayed bitches. A significant difference was not found in the observed frequency of occurrence of any of the microorganisms isolated from the intact vs the spayed bitches.
金黄色葡萄球菌和支原体属是从20只正常成年雄性犬的包皮和尿道获取的标本中最常分离出的需氧微生物。金黄色葡萄球菌和犬链球菌是从20只正常未绝育母犬和20只绝育母犬的阴道（尿道口区域）采集的标本中最常分离出的细菌。在从未绝育母犬和绝育母犬分离出的任何微生物的观察发生率上未发现显著差异。
