370 



CATTLE 



The Holstein-Friesian as a butter-fat producer takes high rank 

 on account of the large yield of milk, which usually tests from 

 3 to 4 per cent butter fat. Some families tend to produce milk 

 poor in fat, while others show a greater amount. Breeders are 

 persistently putting a premium on cows testing high in fat, and 



Fig. 159. Pietertje Maid Ormsby 78051, by Sir Onnsby Hengerveld DeKol 31212, 



a Holstein-Friesian cow owned by J. B. Irwin, Minneapolis, Minnesota. In 1911 



world's official 30-day record of 145.66 pounds 80 per cent butter. Dam of 



Sir Pietertje Ormsby Mercedes. See Fig. 163 



the breed is gradually reaching higher levels as a result. The 

 fat globules in this milk are of the smaller class and do not cream 

 by gravity as rapidly as do Jersey or Guernsey milk. In total 

 butter-fat or butter production, however, very large records have 

 been made. Reference has already been made to the seven-day 

 tests. In 19 1 7 M. H. Gardner, superintendent of Advanced 



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