Tóth L, Csendes P, Gaál T
Dtsch Tierarztl Wochenschr. 1989 Jan;96(1):10-4.
In two large sized farms in Hungary and in several small and medium farms in Bavaria the authors studied the development of ketonuria in cows after calving. In two flocks without problems 30 percent of the cows developed ketonuria, whereas the rate was 56 percent in one problematic flock. Milk yield of the cows observed was above 5000 kg per year, their age differing only slightly. Cows with ketonuria revealed an increased enzyme activity of AST and a decreased plasma-glucose concentration in comparison to the ketone-free animals. Also, the ketonuria cows showed higher amounts of free fatty acids in plasma and lower amounts of total cholesterol. Additionally, these animals more often revealed reproductive disorders. The rate of culling and emergency slaughter was also increased, whereas their pregnancy rate was decreased.
作者在匈牙利的两个大型农场以及巴伐利亚的几个中小型农场中，研究了奶牛产后酮尿症的发展情况。在两个没有问题的牛群中，30%的奶牛出现了酮尿症，而在一个有问题的牛群中，这一比例为56%。观察到的奶牛年奶产量超过5000千克，它们的年龄差异不大。与无酮尿症的奶牛相比，患酮尿症的奶牛AST酶活性升高，血浆葡萄糖浓度降低。此外，患酮尿症的奶牛血浆中游离脂肪酸含量较高，总胆固醇含量较低。另外，这些奶牛更常出现繁殖障碍。淘汰率和紧急屠宰率也有所上升，而它们的受孕率则下降了。
