Jonsson G
Vet Rec. 1978 Feb 25;102(8):165-9. doi: 10.1136/vr.102.8.165.
Milk fever is a disease of increasing importance. In dairy herds its incidence has doubled since 1950; today about 8 per cent of parturitions in Swedish dairy cattle are complicated by milk fever. At the same time, the clinical picture has changed and the effectiveness of calcium therapy has been markedly reduced. Thirty to 40 per cent of cows with milk fever need more than one treatment. These trends are obvious in Sweden and Norway and have been reported from many other parts of the world. However, there are also geographical and breed differences so that these figures might not be applicable under British conditions.
乳热症是一种越来越重要的疾病。在奶牛群中，自1950年以来其发病率已翻了一番；如今在瑞典奶牛中，约8%的分娩会并发乳热症。与此同时，临床症状发生了变化，钙疗法的有效性显著降低。30%至40%的乳热症奶牛需要不止一次治疗。这些趋势在瑞典和挪威很明显，世界其他许多地区也有相关报道。然而，也存在地域和品种差异，所以这些数据在英国的情况下可能并不适用。
