332 



EXPERHJENTAL FARMS 



5 GEORGE V.^ A. 1915 



with results of the second period is possible. The following table is calculated on the 

 feed and production of thirteen cows in the herd : — ~ 



Dairy Cow Feeding Experiment No. 3 A. — Central Experimental Farm, Ottawa. 



Object of Experiment. — To compare molasses with Caldwell's molasses mjeal. 



Rations. — Period 2 : Meal mixture pins 25 per cent Caldwell's molasses meal. 

 Periods 1 and 3 : Meal mixture plus 20 per cent molasses. 



Value of feeds per ton. — Hay, $7; straw, $4; turnips and ensilage, $2; molasses, 

 $23; Caldwell's molasses meal, $32; meal, 1} cents per pound. 



Grain, mixture of. — Bran, 600 pounds; gluten meal, 300 pounds; oil cake, 200 

 pounds; cottonseed, 200 pounds; dried brewers' grains, 200 pounds. 



Number of oo-ns in test 



Pounds of milk produced by 13 cows lb 



Average milk per cow per day " 



Average per cent fat in milk p.c 



Total pounds fat produced by 13 cows lb , 



Average pounds fat per cow per day " 



Total meal consumed " 



Total molasses or molasses meal conbumad " 



Mixture consumed per 100 pounds fat produced. ..." 

 Mixture consumed per 100 pounds of milk produced " 



Findings from Experiment— 



Cost of meal mixture fed % 



Value of roughage fed " 



Total cost of feed " 



Cost to produce 100 pounds fat " 



Cost to produce 1 pound fat " 



Cost to produce 1 pound butter , " 



Profit on 1 pound butter at 30 cents per pound. . . " 



Cost to produce 100 pounds milk " 



Profit on 100 pounds milk at $1.70 per cwt " 



Period 

 1 



13 

 2,07.5 

 22-8 

 3-6 

 74-7 

 0-82 

 711 

 178 

 1,190 



Period 



13 

 2,1.30 

 23-4 

 3-9 

 83 

 0-91 

 711 

 178 

 1,071 

 41-7 



11 03 



5-54 

 1(1-57 

 19-96 

 0-199 

 0-159 

 0-141 

 0-773 

 0-927 



Periods 

 1 and 3 

 average. 



Period 



9 



■1 



-75 



13 

 M02 

 23 

 3- 

 78-8 

 0-86 

 711 

 178 

 ^129 

 42-3 



11 

 5 



16 

 21 

 

 

 

 

 



-03 



-.54 



-.57 



-03 



-21 



■168 



-1.32 



•788 



•914 



13 



2, 192 

 24 

 3-8 

 83-29 

 0-916 

 606 

 223 

 1,067 

 40-6 



11-90 

 5-54 

 17-44 

 20-95 

 0-209 

 0-167 

 0-1.33 

 0-795 

 0-915 



Reviewing the results it will be seen that the production was higher during that 

 week when the molasses constituent consisted of Caldwell's ineal. The cost of produc- 

 tion, however, is not reduced, being practically the same in all periods. 



In conjunction with the foregoing work, a duplicate experiment was carried on 

 with the pure-bred herd.. 



Ottawa. 



