Variations in the Freezing Points of Cow's Milk

Abstract

Variations in the freezing points of cow's milk were observed under a variety of conditions. Statistically significant differences were observed between Holstein and Brown Swiss cows and between rations. The freezing points of morning and evening samples show significant differences. Under certain conditions the morning samples had higher freezing points than evening samples, whereas under other conditions the evening samples had higher freezing points. The average freezing point of 594 samples of authentic individual cow samples was found to be−0.539° C. with a range from −0.513 to −0.565° C. The range of freezing points varied with the ration. The implications of the results of this study are discussed in detail. © 1953, American Dairy Science Association. All rights reserved.