四川省进口牛、羊厌食、消瘦、贫血和脱毛等症状,经补喂钴后,症状好转。通过对当地土壤和饲草(料)分析可知,缺钴症与土壤含Co有关,但与饲料种类关系更密切。在1N HNO_3提取的有效钴<2ppm,2.5％醋酸提取的有效钴<0.25ppm的地区,缺钴症状比较突出。饲草含钴量以三叶草最多(1.15ppm),牛鞭草最低(0.29ppm),精饲料玉米粉更低(0.04ppm)。喂饲含钴量0.94ppm的饲草的牛羊未出现缺钻症。对已患病畜日饲15～150mg CoSO_4可得以矫治。 Sichuan imported cattle, sheep anorexia, weight loss, anemia and hair removal and other symptoms, after feeding cobalt, the symptoms improved. Through the analysis of the local soil and forage (material) shows that the lack of cobalt disease and soil Co-related, but with the feed species more closely. In 1N HNO_3 extracted effective cobalt <2ppm, 2.5% acetic acid extracted effective cobalt <0.25ppm areas, the lack of cobalt symptoms more prominent. The amount of cobalt in forage grass was the highest (1.15ppm) for clover, the lowest (0.29ppm) for verbena and the lower (0.04ppm) for concentrate forage cornmeal. Cattle fed the forage grass containing 0.94ppm cobalt did not suffer from the disease. On sick animals feeding 15 ~ 150mg CoSO_4 can be corrected.