Doige C E
Can J Comp Med. 1980 Oct;44(4):382-9.
Lumbar vertebral columns from 73 boars were examined for pathological changes. While pathological changes were minimal at five months of age, several animals aged seven to 18 months of age had facet asymmetry and large osteophytes surrounding lumbar facets. In the adult group 36% had degeneration of intervertebral discs and 28% had ventrolateral vertebral osteophytes. Lesions characterized by irregular areas of cavitation in the annulus and adjacent vertebral epiphyses were also observed. Of animals submitted for necropsy with a history of clinical lameness. lesions included nonsuppurative polyarthritis, fracture of the sacrum and femoral head, osteochondrosis involving articular cartilage of the distal humerus and distal femur, vertebral osteomyelitis, meningeal abscess and ulnar osteomyelitis.
对73头公猪的腰椎柱进行了病理变化检查。5月龄时病理变化最小，但7至18月龄的几头猪出现了关节突不对称以及腰椎关节突周围有大的骨赘。成年组中，36%有椎间盘退变，28%有椎体腹外侧骨赘。还观察到以椎间盘和相邻椎体骨骺中不规则空洞区域为特征的病变。在因临床跛行病史而进行尸检的动物中，病变包括非化脓性多关节炎、骶骨和股骨头骨折、累及肱骨远端和股骨远端关节软骨的骨软骨病、椎体骨髓炎、脑膜脓肿和尺骨骨髓炎。
