FEEDING DAIRY CATTLE 



205 



much criticism by investigators in the United States, who feel 

 that they call for more protein than is needed, especially by 

 those animals giving a rather large flow of milk rather poor in 

 butter-fat. These investigators object to the fact that the 

 standards do not take into account the quality as well as the 

 quantity of the milk. 



Fig. 71. — Holstein-Fhiesian Bull "Kino Segis" at six Yeabs Old. The 

 sire of fifty A. R. 0. daughters owned by H. A. Moyer, Syracuse, N. Y. 



The Holstein-Friesian breed of dairy cattle originated in Holland. While the 

 Jersey is noted for the quality of milk, the Holstein is noted for the quantity or 

 the large flow of milk. It is often spoken of as "the milk cow." In size they 

 are the largest dairy breed, mature bulls weighing 1700 to 2200 pounds, the 

 cows 1400 to 1800 pounds. The color is black and white. In America this 

 breed is very popular for milk production to supply the cities. 



The quality of the milk as well as the quantity has an in- 

 fluence on the amount of food required by a milking cow. For 

 example, the daily production of 22 pounds of 3 per cent 

 milk involves the elaboration of approximately 2.5 pounds 

 of milk solids, whereas if the milk contained 6 per cent fat, it 



