Simenov S I, Petrova L, Tsvetkova V
Vet Med Nauki. 1984;21(1):89-93.
Studies were carried out with a total of 40 ketosis-affected cows and 40 normal (control) cows. It was found that with the diseased animals the blood level of sugar was lowered by 45 per cent, that of total protein--by 24 per cent, that of carotene and vitamin A--by more than twice, and that of inorganic phosphorus--by 20 per cent as against the blood indices with the control cows. In the same period the content of ketone bodies in the blood of ths affected cows increased 5 times, and in the urine it rose 6 times. With cows that had ketosis the cases of dystocia and retained placenta were 5 times more, still births were twice more, and the cases of diseased endometrium were 6 times more than those in the control cows. Respectively, cows that had manifested clinical ketosis showed longer independence period (by 22 days), longer service period (by 54 days), lack of estrus (in 20 per cent of the animals), and as many as 33.3 per cent of them failed to conceive and were culled. It was concluded that ketosis had unfavourably affected the normal course of the parturition process ++ and the conception of high-producing cows.
对总共40头患酮血症的奶牛和40头正常（对照）奶牛进行了研究。结果发现，与对照奶牛的血液指标相比，患病动物的血糖水平降低了45%，总蛋白水平降低了24%，胡萝卜素和维生素A水平降低了两倍多，无机磷水平降低了20%。在同一时期，患酮血症奶牛血液中的酮体含量增加了5倍，尿液中的酮体含量增加了6倍。患酮血症的奶牛难产和胎盘滞留的病例是对照奶牛的5倍，死产是对照奶牛的2倍，子宫内膜患病的病例是对照奶牛的6倍。此外，表现出临床酮血症的奶牛独立期更长（长22天），配种期更长（长54天），出现发情期缺失（占动物的20%），其中多达33.3%未能受孕而被淘汰。得出的结论是，酮血症对高产奶牛的正常分娩过程和受孕产生了不利影响。
