FACTORS THAT AFFECT COMPOSITION OF MILK 55 



EFFECT OF VARIATIONS IN RATION UPON THE MILK 



Cow 12. VARIATIONS IN PROTEIN SUPPLY 



Cow 10. VARIATIONS IN FOOD FAT SUPPLY 



"Cow 12 fed a fat-poor ration in which the protein supply 

 was gradually decreased from 2.6 Ib. daily to 1.6 Ib. and then 

 gradually restored to the maximum, with accompanying in- 

 crease and decrease in carbohydrates so that the digestible dry 

 matter of the ration was kept fairly uniform; Cow 10 fed a 



