AVERAGE YIELD OF ALL HERDS IN U. S. A. FOR FORTY YEAR PERIOD 

 Milk - 4000 lb per year | Butterfat - 170 lb per year 



AVERAGE YIELD OF DAIRY COWS AT BEGINNING OF CENTURY 



I 7500 lb milk per year | 322 lb butterfat, the record yield in 1903 



TODAY'S RECORDS FOR JERSEY COWS SHOW 



A "POOR" JERSEY YIELDS 



yil,0001b , mi)k^xymi__ 

 I 530 lb butterfat per year 



AN "EXCELLENT' JERSEY YIELDS 



.^_ ^ 14,837 lb milk per yeajc 



I 750 lb butterfat per year 



SELECTIVE BREEDING IMPOVES BUTTERFAT YIELD 



12 selected cows 

 11 daughters 



^^^^^^^lljpther daughters 



MORE MILK FOR LESS WORK 



I 





Average butterfat yield 



American Jersey Cattle C'liih 



One of the most effective ways of saving labor in producing the nation's necessary 

 food is that of improving the breeds of plants and animals 



