Ball H J
Veterinary Research Laboratories, Belfast, Northern Ireland.
Vet Microbiol. 1990 May;22(4):383-8. doi: 10.1016/0378-1135(90)90025-q.
Twelve strains of M. bovigenitalium and two of three strains of M. canadense caused an infection resulting in a pathogenic effect when experimentally inoculated into the ovine mammary gland. Differences in the pathogenesis were quantified by the duration of continuous mycoplasma excretion and the duration of high milk cell levels, but variation in the susceptability of the experimental animals prevented the establishment of firm conclusions on the relative virulence of the strains. Seven M. bovigenitalium and two M. canadense strains were eventually eliminated naturally from the infected glands, but four M. bovigenitalium strain infections ultimately became sub-clinical with intermittent mycoplasma excretion and low milk cell levels.
12株牛源支原体和3株加拿大支原体中的2株在实验接种到绵羊乳腺后引发感染并产生致病效应。通过支原体持续排泄的持续时间和高乳细胞水平的持续时间对发病机制的差异进行了量化，但实验动物易感性的变化阻碍了就这些菌株的相对毒力得出确凿结论。7株牛源支原体和2株加拿大支原体菌株最终从受感染的腺体中自然清除，但4株牛源支原体菌株感染最终变为亚临床感染，伴有间歇性支原体排泄和低乳细胞水平。
