The study was conducted on 79 high performance dairy cows of the race Holstein Friesian that showed ketosis in Hanoi vicinity. The main findings were: - The affected cows usually showed the digestive troubles
emancipation and low milk productivity
the ketones were found in the body fluids (blood, urine and milk) in 100 percent of the cows. - The red blood cell number, the hematocrit, the hemoglobin values, the white blood cell number in the affected cows were decreased, lower than those of the normal cows. - The alkaline reserve and the sugar in the blood decreased and the ketones were found increased as high as the double the amount found in the normal cows. - Two treatment protocols were tested and resulted as effective. However, the protocol number two was more effective than the number one.