Journal of the Faculty of Fisheries and Animal Husbandry, Hiroshima University Volume 16 Issue 1
1977-08-20 発行

Studies on 'the Utrecht Abnormality of Milk' in the Miyuki Dairy Farm : II. Ca and Mg Contents in Blood

御幸牧場において「集団発生した低酸度二等乳」に関する研究 : (2) 低酸度二等乳泌乳牛の血中Ca及びMgについて
Yoshida, Shigeru
file
abstract
A great deal of abnormal milk secretion has been observed in the Miyuki Dairy Farm, and the abnormal milk showed alcohol test positive and heating test positive properties that are called 'the Utrecht abnormality of milk.' The abnormal milk showed high Ca and low Mg content in its skim milk and had a high ionized Ca level.

The cows in the Miyuki Dairy Farm showed a low Mg content and a high Ca content in the blood serum, and a high Ca level in the whole blood compared with that of normal groups.
1) The mean value in the blood serum of Mg is 1.82meq/l for abnormal groups and 2.00meq/l for normal ones.
2) The mean value in the blood serum of Ca is 4.49meq/l for abnormal and 4.24meq/l for normal ones.
3) The mean value in the whole blood of Mg is 1.82meq/l for abnormal and 1.85meq/l for normal groups.
4) The mean value in the whole blood of Ca is 3.82meq/l for abnormal and 3.34meq/l for normal groups.

From these results, the abnormal milk in the Miyuki Dairy Farm which showed a low Mg and a high Ca content must have been yielded from cows suffering from a low Mg and a high Ca content in their blood serum. From low serum Mg and high serum Ca, the author has arrived at the conclusion that the lactating dairy cows in the Miyuki Dairy Farm must have been suffering from chronic lactation disorder accompanied by a disturbance of the Mg metabolism or by a Mg deficiency.