The chemical composition of the milk of cows receiving cod-liver oil

Abstract

Analyses of the milk of cows fed on well-balanced diets to which varying quantities of cod-liver oil and arachis (pea-nut) oil have been added indicate that the addition of the cod-liver oil results in changes in the chemical composition of the milk, particularly an increase in the percentage of total Ca. Insufficient results have as yet been obtained to justify any very definite conclusions, but in view of the fact that the butter made from the milk of cows fed on cod-liver oil is known to be much more strongly antirachitic than butter from the milk of cows which have not received cod-liver oil, the results already obtained seem to be of sufficient interest to warrant further analyses. No suggestion is as yet put forward as to the source of the extra Ca found in the milk.