Andrews A H, Laven R, Maisey I
Department of Large Animal Medicine, Royal Veterinary College, North Mymms, Hatfield.
Vet Rec. 1991 Sep 7;129(10):216-9. doi: 10.1136/vr.129.10.216.
An outbreak of fat cow syndrome occurred in a herd of 300 Friesian and Friesian/Holstein dairy cows calving predominantly between January and May. The herd came in off grass in good condition despite a long and hot summer. The dry cows received a diet of grass silage, brewing waste and minerals until the end of December, but the grass silage was butyric and was partially replaced by maize silage. By January 23, 16 of 70 calving cows (23 per cent) had appeared to suffer milk fever. Subsequent blood tests revealed that the cows may have been ketotic, and clinical and post mortem examination showed that they were probably suffering from fat cow syndrome. The freshly calved sick cows were treated with glucose, and corticosteroids were injected every second day into those which remained ill. The cattle had received a high energy diet, but the cows still to calve were placed on a diet of low metabolisable energy (77 MJ/cow) but adequate levels of undegradable protein. The problem was associated with a possible clostridial infection in two cows and with reduced fertility.
在一群300头主要在1月至5月产犊的弗里斯兰和弗里斯兰/荷斯坦奶牛中爆发了肥母牛综合征。尽管经历了漫长炎热的夏季，但这群牛进入圈舍时状况良好。干奶牛在12月底前一直食用青贮草、酿造废料和矿物质，但青贮草有丁酸味，部分被玉米青贮取代。到1月23日，70头产犊母牛中有16头（23%）似乎患了产乳热。随后的血液检测显示这些母牛可能患有酮病，临床和尸检表明它们可能患有肥母牛综合征。刚产犊的病牛用葡萄糖治疗，对仍未康复的病牛每隔一天注射一次皮质类固醇。这些牛此前食用的是高能日粮，但尚未产犊的母牛被改为低代谢能（每头母牛77兆焦）但不可降解蛋白质水平充足的日粮。该问题与两头母牛可能感染梭菌以及繁殖力下降有关。
