BO 



fed to dairy coius in the proportion employed in this ex- 

 periment. Stated differently, vetch hay was worth |20 

 per ton when wheat bran cost $20 per ton. 



Every one of the six cows produced butter at much 

 less cost on the vetch than on the wheat bran ration. 



The cost of food for one pound of butter was as fol- 

 lows : 



On vetch ration. On bran ration, 



Cents. Cents. 



Susan 8.3 11.1 



Uikie 8.9 11.6 



Hypatia 9.0 13.2 



Hazena 9.9 11.6 



Ada 11.6 14.8 



Ida 13.9 21.0 



CowPEA Hay versus Wheat Bran. 



This experiment extended from December 19, 1902, to 

 March 6, 1903. In addition to the usual preparatory 

 feeding there were two periods of 30 days each. The ra- 

 tions were at the proper time reversed, so that during 

 one part of the experiment each lot of cows received cow- 

 pea hay and during another portion of the test each lot 

 received wheat bran. The general plan was similar to 

 that of the preceding experiment, but on account of the 

 larger amount of cowpea hay rejected (averaging about 

 one-sixth of that offered) it was considered necessary 

 to supply larger amounts of cowpea hay than of wheat 

 bran. 



Foodstuffs were valued at the same price as the pre- 

 vious winter. Cotton seed hulls were priced at |5 per 

 ton and a fair quality of cowpea hay at |10 per ton. 



A basal ration was made up by weight as below and 

 fed to every cow during the entire experiment : 



\ cotton seed (raw). 



-1 wheat bran. 



