Laing E A, Egerton J R
Res Vet Sci. 1978 May;24(3):300-4.
Following reports of findings of ovine foot-rot flora in the feet of cattle, a study was undertaken to determine the prevalence of Bacteroides nodosus infection in the apparently normal cattle population. We found that 34.5 to 74.2 per cent of the animals examined on different farms had B nodosus present in one or more feet. B nodosus was not the most prevalent bacterium observed in smears from cattle. Other Gram negative species including Fusiformis necrophorus and many Gram positive cocci and coccobacilli were also present. Macroscopic lesions in the interdigital skin characterised by erosion and hyperkeratosis were usually associated with the occurrence of B nodosus. B nodosus isolated from cattle induced mild interdigital dermatitis in experimental cattle and sheep and the infection was transmitted to recipient cattle and sheep under field conditions. Virulent foot-rot of sheep was not transmitted to recipient cattle in conditions where the disease spread to susceptible sheep.
在有报告称在牛蹄中发现绵羊腐蹄病菌群后，开展了一项研究以确定在看似正常的牛群中结节拟杆菌感染的流行情况。我们发现，在不同农场检查的动物中，34.5%至74.2%的动物一个或多个蹄中存在结节拟杆菌。结节拟杆菌并非在牛的涂片检查中观察到的最普遍的细菌。还存在其他革兰氏阴性菌，包括坏死梭杆菌以及许多革兰氏阳性球菌和球杆菌。指间皮肤以糜烂和角化过度为特征的宏观病变通常与结节拟杆菌的出现有关。从牛身上分离出的结节拟杆菌在实验用牛和羊中引起轻度指间皮炎，并且在田间条件下该感染可传播给受体牛和羊。在疾病传播至易感绵羊的情况下，绵羊的恶性腐蹄病未传播给受体牛。
