PHYSICAL PROPERTIES OF MILK 



81 



RELATIVE COLOR PRODUCTION UNDER SPECIAL FEEDING CONDITIONS 



The most interesting feature of the above table is to note that 

 on the basis of the percentage of green dry matter in the ration, 

 the Jersey cows produced the highest-colored fat because they 

 received the highest percentage of green dry matter. By taking 

 into consideration also the difference in fat production, an inter- 

 esting calculation can be made with the figures of average color, 

 fat production, and percentage of green dry matter in the ration, 

 which will cause the relative color production of the two breeds 

 to approach almost unity. 



If it be assumed for the moment that there is no breed charac- 

 teristic, we can say that 30 per cent green feed in the ration of the 

 Holsteins produces 18 units of yellow in the fat for the same 

 reason that 42 per cent green feed in the ration of the Jerseys 



1 Per cent of moisture free green feed in total ration, 

 a 



