Simeonov S I
Vet Med Nauki. 1983;20(9):30-6.
Investigations were carried out with 45 normal cows and 45 cows with disturbed carbohydrate metabolism (ketosis). The animals of the groups were all high-producing, and have recently calved, being equated according to the principle of analogues. Studied were the indices that were most characteristic of carbohydrate metabolism--total amount of VFA in the rumen along with individual fractions (acetic, propionic, and butyric acid) and total ketones; blood level of FVA, sugar, and ketone bodies. It was found that in the rumen of normal cows the content of VFA was 564.6 +/- 42.4 mg%, and that of the fractions was: acetic acid-342.2 +/- 14.2 mg%, propionic acid-166.8 +/- 16.3 mg%, butyric acid-56.8 +/- 5.6 mg%, and ketone bodies-6.4 +/- 0.8 mg%. In the blood VFA were 8.2 +/- 1.2 mg%, sugar was 66.3 +/- 1.4 mg%, and ketones were 7.6 +/- 1.8 mg%. With ketosis-affected cows, exhibiting disturbed carbohydrate metabolism these values were: in the rumen-VFA-322.6 +/- 28.4 mg%, acetic acid-120.8 +/- 17.8 mg%, propionic acid-76.4 +/- 12.2 mg%, butyric acid-126.0 +/- 9.5 mg%, and ketone bodies-93.2 +/- 1.8 mg%; in the blood-VFA-72.4 +/- 9.2 mg%, sugar-32.3 +/- 1.9 mg%, and ketone bodies-106.6 +/- 8.6 mg%. Analysis of the results with normal carbohydrate metabolism has revealed that the total amount of VFA in the rumen consisted of 60.6% acetic acid, 29.5% propionic acid, and 10.0% butyric acid.
对45头正常奶牛和45头碳水化合物代谢紊乱（酮病）的奶牛进行了调查。两组动物均为高产奶牛，且最近产犊，按照类似物原则进行了对等。研究了碳水化合物代谢最具特征的指标——瘤胃中挥发性脂肪酸（VFA）的总量及其各个组分（乙酸、丙酸和丁酸）以及总酮；血液中FVA、糖和酮体的水平。结果发现，正常奶牛瘤胃中VFA的含量为564.6±42.4毫克%，各组分含量为：乙酸342.2±14.2毫克%，丙酸166.8±16.3毫克%，丁酸56.8±5.6毫克%，酮体6.4±0.8毫克%。血液中VFA为8.2±1.2毫克%，糖为66.3±1.4毫克%；酮为7.6±1.8毫克%。对于碳水化合物代谢紊乱的酮病奶牛，这些值为：瘤胃中VFA为322.6±28.4毫克%，乙酸为120.8±17.8毫克%，丙酸为76.4±12.2毫克%，丁酸为126.0±9.5毫克%，酮体为93.2±1.8毫克%；血液中VFA为72.4±9.2毫克%，糖为32.3±1.9毫克%，酮体为106.6±8.6毫克%。对碳水化合物代谢正常的结果分析表明，瘤胃中VFA的总量由60.6%的乙酸、29.5%的丙酸和10.0%的丁酸组成。
