20 



Grain Scbebnings. 



Table No. 1.— Dairy Cow Feeding Experiment No. 1.— Meal versus 

 Meal, 2 parts; Complete Pulverized Screenings, 1 part. 



Feeds. 



Number of cows in test No. 



Pounds of milk produced by 16 cows Lb. 



Average milk per cow per day " 



Average per cent fat in milk % 



Total pounds fat produced by 16 cows Lb. 



Average pounds fat per cow per day 



Total meal consumed 



Total hay consumed 



Total molasses consumed ' 



Total roots consumed 



Total ensilage consumed 



Mixture consumed per 100 pounds fat pro- 

 duced " 



Relative value for production of fat ...... . % 



Mixture consumed per 100 pounds milk 

 produced lb. 



Relative value for production of milk % 



Findings from Experiment. 



Cost of meal mixture fed S 



Value of roughage fed { 



Total cost of feed -. % 



Cost to produce 100 pounds fat S 



1 pound fat $ 



" " 1 pound butter % 



Profit on 1 pound.butter at 30 cents a pound % 



Cost to produce 100 pounds milk .' % 



Profit on 100 pounds milk at $1.70 per 



hundredweight S 



Total weight of cows for period lb. 



Gain for period " 



Meal. 



Period 

 1. 



16 

 2,732-5 

 24-4 

 3'9 

 106-56 

 -951 

 1,036 

 672 



3,990 

 971-8 



37-9 



13 46 

 6.34 

 19.80 

 18.57 

 0.185 

 0.155 

 0.145 

 0.725 



0.97G 

 16,089 



Meal. 



Period 

 3. 



10 

 2,088 

 18-7 

 3-95 

 C2-47 

 ■739 

 1,036 

 672 



3,990 

 1,255-2 



49-6 



13-46 

 6.34 

 19.80 

 24.00 

 0.24 

 0.20 

 0.10 

 0.948 



0.75 

 16,792 

 405 



Meal. 



Meal 



AND 



Screenings 



Average 

 Periods 

 1 and 3. 



16 

 2,410-3 

 21-5 

 3-925 

 94-6 

 -845 

 1,036 

 672 



3,990 



1,095-2 

 100 



43-2. 

 100 



13-46 

 6.34 

 19.80 

 20.93 

 0.209 

 0.175 

 0.125 

 0.82 



0.-88 



Period 

 2. 



16 

 ,450-5 

 21-9 

 3-95 

 96-77 

 -864 

 936 

 672 



3,990 



967-8 

 113-6 



38-2 

 112-5 



9-67 

 6.34 

 16 .-01 

 16.55 

 0.165 

 0.138 

 0.162 

 0.662 



1.04 

 16,387 

 298 



Deductions. — That the ration fed during Period 2 (one-third 

 screenings) was unpalatable to a marked degree was shown by the 

 fact that, even during its second week, when the cows had become 

 more or less accustomed to the change, over one hundred pounds was 

 removed and credited to the animals. Notwithstanding this, hqwever 

 the production of milk during Period 2 was greater than the average 

 of production of Periods 1 and 3. Referring to the findings from the 

 experiment, the cost of the elevator screenings ration is, on the values 

 adopted, considerably lower. Taking into considertion the lessened 

 amount of meal consumed, this would explain the relatively low 



