FEEDING DAIRY CATTLE 



235 



of a dairy. It is the heavy eaters that produce the largest yields 

 and give the most economical production. 10 



The Value of High-producing Cows. — Eesults- obtained in 

 the Wisconsin Dairy Cow Competition, 1909—1911, illustrate in a 

 striking manner the value of high-producing cows. The following 

 table gives some of the main data for the highest, medium, and 



MAINTENANCE 

 RATION ONLY 



MAINTENANCE 



INSUFFICIENT 

 RATION 



LIBERAL RATION FED 

 TO G00DDAIRrC0W5 



MAINTENANCE MILK PRODUCTION 



MAINTENANCE MILK PRODUCTION 



MAINTENANCE MILK PRODUCTION GAIN IN WEIGHT 

 LIBERAL RATION FED 



TO BEEF COWS 



Fig. 45. — Liberal rations fed to cows of beefy tendencies produce a rain in weight; such 

 fed to good dairy cows i. reduce the largest picduetion ot milk 01 which they are capable. 

 (Van Norman.) 



lowest producers among the 398 cows in the competition for which 

 complete records of production for a full year were obtained. The 

 cows were separated into three groups of the same number of cows 

 within each of the dairy breeds represented, Holstein, Jersey, and 

 Guernsey, according to their production of butter fat; the data 

 for the different groups have been combined and are given in the 

 following table :" 



Returns from Cows of Different Producing Powers - 



10 Proc. Soc. Prom. Agr. Science, 1912, p. 23; Wisconsin Bulletin 102, 

 p. 78, and Research Bulletin 26; Wash. Report 25, p. 10 and Bui. 127; Mo. 

 Bui. 135, p. 55; Ohio Mo. Bui. 1917, No. 10, p. 334; Utah Bui. 43. 



"Wisconsin Bulletin 226, p. 22. 



