376 MISSOURI AGRICULTURAL EXP. STA., RESEARCH BULLETIN NO. IO 



TABLE No. 16. EFFECT OF A NON-PIGMENTED RATION UPON THE COLOR OF 

 MILK FAT. JERSEY Cow No. 59. 



(a) The grain mixture was 5 Ibs. corn and 6 Ibs. cottonseed meal. 



(b) Green alfalfa hay from March 11 to April 2. 



(c) Bleached timothy hay from April 3 to May 20. 



(d) Green alfalfa hay beginning May 21. 



The results of this experiment show conclusively that Jersey 

 cows are as much dependent upon their food for the pigments of the 

 milk fat as other breeds of cows. In addition the experiment offers 

 excellent proof of some statements previously made in explanation 

 of the gradual lowering of the color of the milk fat of Cow No. 57 

 in Experiment No. i. It was stated there that the yellow body fat 

 was supplementing the normal storage of pigment on account of the 

 unpalatableness of the ration. In the present experiment we have an 

 example of the effect of changing the ration to a non-pigmented one 



