26 



The cows held about steady in live weight during this experiment, 

 and one would naturally exjject to notice the full effect of the food 

 in the milk and butter yield. Had each half of this experiment 

 extended over 28 days instead of 14, we should consider the results 

 more satisfactory. 



AVERAGE MILK AND BUTTER YIELD PER COW DAILY. (Ibs.) 



Our calculation, as explained under black grass, would show this 

 hay to have pound for pound of dry matter, 6 per cent less value 

 than English hay, while the results with sheep show 14 per cent less 

 value. Probably an average of 10 per cent less would not be far 

 out of the way. 



COST OF MILK AND BUTTER. 

 Ration. Quart milk. Pound butter. 



Salt mixture, 1.58 14.4.") 



English hay, 1.86 16.86 



Percentage increased cost with Eng. ha}' ration, 15. 14.2 



AVERAGE RESULTS OF ALL MILK EXPERIMENTS. 



Excluding the Red top variety, which is not strictly speaking a 

 salt hay, the average 7-esuIts of the other five tests are presented 

 below. 



AVERAGE DAILY RATION PER COW. (Ibs.) 



English Corn Wheat Chicago 



Ration. Salt hay. hay. ensilage. bran. gluten meal. 



Salt hay, 11.50 — 27.66 5 2.6 



English hay, — 10.54 28.12 5 2.6 



AVERAGE DRY AND DIGESTIBLE MATTER IN DAILY RATIONS. (Ibs.) 



Total Carbo- Total 



Ration. dry matter. Protein. hydrates. Fat. digeatible. 



Salt hay, 22.12 2.16 10.65 .55 13.36 



English hay, 21.91 2.14 11.26 .56 13.96 



TOTAL GAIN OR LOSS IN LIVE WEIGHT. 



Sweet hay ration, -\-3 pounds 



English hay ration, -f-147 " 



