CAROTIN, THE PRINCIPAL YELLOW PIGMENT OF MILK FAT 367 



(mostly yellow). Later this was replaced by yellow corn entirely. 

 The roughage remained the same, i. e. bleached clover hay. The 

 table shows that yellow corn had no effect whatever upon the color 

 of the milk fat. There seemed to be a very slight effect at first but 

 the color of the fat soon dropped back to 8.0 units of yellow. 



TABLE No. 10. THE EFFECT OF A CAROTIN AND XANTHOPHYLL-FREE RATION 

 ON THE COLOR OF MILK FAT. JERSEY Cow No. 57. 



The 7 Ibs. of clover hay was now replaced by 10 Ibs. of alfalfa 

 hay rich in carotin and xanthophylls. The effect on the color of the 



