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

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  • 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 : (1) 低酸度二等乳中のCa及びMgについて
  • 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-1-低酸度二等乳中のCa及びMgについて〔英文〕
  • ミユキ ボクジョウ ニ オイテ シュウダン ハッセイシタ テイ サンド ニトウ

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A great deal of abnormal milk secretion had been observed in the Miyuki Dairy Farm in Japan in the year 1970, when nearly all the lactating dairy cows in the herd fell into a chronic lactation disorder. The mass outbreak of abnormal milk secretion in Miyuki Dairy Farm agreed with a phenomenon that occurred in the Netherlands and has been called 'the Utrecht abnormality of milk.' The characteristic signs of the abnormal milk in Miyuki Dairy Farm were: l) all lactation dairy cows yielded milk with alcohol test positive, 2) some of them showed heating test positive properties, 3) some of them had a salty taste and high conductivity, 4) most of them showed a high content in ionized Ca, 5) the ratio of Ca/Mg was 6.92 for chemical equivalent, this meant high Ca and low Mg in the abnormal milk, 6) low Mg and low protein milk was yielded in the summer months and high Ca milk in the winter months. So it appeared that the cows of Miyuki Dairy Farm must have been victims of some metabolic disturbance resulting in an abnormal outflow of Ca and the saving of Mg from the body into milk.

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