CAROTIN, THE PRINCIPAL YELLOW PIGMENT OF MILK FAT 3/3 

 TABLE No. 14. (CONTINUED) 



(a) Roughage consisted of 2 parts timothy hay and 1 part cottonseed hulls. 



Note: During the period from 2:18 p. m. to 2:23 a. m. the cow was badly 

 off feed and her entire ration was withdrawn for a few days. She soon re- 

 covered, however, and was put back on the experimental ration, not feeding so 

 many carrots, however. 



In regard to the effect of feeding carrots, the data brings out 

 several interesting points. The carrots were added to the ration on 

 February 7, and the amount was rapidly increased to 50 Ibs. per day. 

 The cow ate them with a good deal of relish for about a week when 

 she began to refuse part of them and finally went off feed entirely, 

 making it necessary to withdraw her entire ration for a day or two. 

 The effect of this carrot feeding period upon the color of the milk 

 fat was to increase the color from 1.8 to 19 units of yellow. This in- 

 crease was not nearly as great, however, as was expected considering 

 the large amount of carrots that was fed and the length of time they 

 had been in the ration, i. e. eleven days. 



