Milk of Different Breeds. 33 



Solids. Fat. 



Jersey 14.70 5.35 



Guernsey 14.71 5.16 



Devon 14.50 4.60 



Short-horn 13.38 4.05 



Ayrshire. 12.61 3.66 



Holstein-Friesian 11.85 3.42 



The variation due to breed includes not only the 

 amount of fat, and the color and melting point of 

 the fat, but the size of the milk globules. In some 

 breeds the milk globules are uniformly large, in 

 others extremely small, and in still others both large 

 and small globules are found. 



While there is a distinct difference in the qual- 

 ity of the milk of the different breeds, the dif- 

 ferent individuals in the breed also vary largely in 

 the quality of the milk. The difference in the 

 percentage of fat in milk from different cows of 

 the same breed is quite as great as the average 

 differences between the breeds ; that is to say, the 

 difference between the highest and lowest percent- 

 age of fat in the milk of different individuals of 

 the same breed is as great as the difference be- 

 tween the average percentage of fat in the breeds 

 giving the richest and poorest milk. 



The variations due to the breed of the animal 

 extend, of course, in some measure to the butter 

 made from the milk. This is particularly true of 

 the color and hardness of the fat. But while 

 these differences are sufficient in amount to be 

 characteristic, they scarcely affect the quality of 

 the butter as a whole. While some partisans may 



