Refinement of Feeding Experiments for Milk Production 241 



Pounds 

 of milk 

 produced 



12,250 

 12,000 



II -7.50 

 ii.Soo 



I-,2S0 



II ,000 



10,750 



10,500 



10,250 



10,000 



9,750 



9,500 



9,250 



9,000 



8,750 



8,500 



8,250 



8,000 



7.750 



7,500 



7,250 



7,000 

 Lactation 



23450789 



Fig. 59. RELATION OF AGE OF COW TO MILK PRODUCTION 



10 



Pounds 



of fat 



produced 



250 

 Lactation 



2345678 

 Fig. 60. RELATION OF AGE OF COW TO FAT PRODUCTION 



