334 



EXPERIMEXTA L FARMS 



5 GEORGE v., A. 1915 

 IJolaffies rs. Caldirell's Molassps and MoJaadne Meals. 



A number of the grade cows used in Experiment 3A v 're well advanced in their 

 lactation periods, were decreasing rapidly in milk flow and were therefore much less 

 likely to respond to slight changes in feeding. At the close of the experiment just 

 mentioned, a number of high-grade, fresh-calved cows were purchased, and wn'th them 

 the comparison of molaivses with molassts meals was continued as experiment No. 4, 

 parts 1 and 2. In experiment 3, molasses formed the basis of txperimentation, while 

 in experiment iSTo. 4 comparison was made from a molasses meal basis. Apart from 

 this, no further explanation is necessary. 



Dairy Cow Feeding Experiment No. J^ — Part I — Cenlral Experimental Farm, Ottawa. 



Object of Experiment. — Caldwell's molasses meal vs. molasses (Caldwell's meal 

 Standard). 



Bations.- — ^Period 2; Grain mixture plus 20 per cent molasses 



Periods 1 and 3: Grain mixture plus 25 per cent Caldwell's molasses 

 meal. 



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

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



(rrain, mixture of. — Bran, GOO pounds; gluten meal, 300 pounds; oil cake, 200 

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



Number of cows in test 



Pounds of milk produced by 8 cows lb. 



Average milk per cow per day " 



Average per cent fat in milk p.c 



Total pounds fat produced by 8 cows lb. 



Average pounds fat per cow per day " 



Total meal consumed " 



Total molasses consumed " 



Mixture consumed per 100 pounds fat produced " 



Mixture consumed per 100 pounds milk produced . " 



Findings from Experiment.— 



Cost of meal mixture fed S 



Value of roughage fed '' 



Total cost of feed " 



Cost to produce 100 pounds fat " 



a it 1 u it 



1 " butter 80 per cent " 



Profit on 1 pound butter at 30 cents per pound " 



('ost to produce 100 pounds milk " 



Profit on 100 pounds milk at $1.70 per cwt.. . . " 



In the above experiment, comparing molasses feeds on a Caldwell's molasses meal 

 standard, the eight cows gave an appreciably greater response during the period when 

 they received the 20 per cent molasses addition to the meal mixture. This, combined 

 with the lower cost of the ration, reduced the cost of production during the molasses 

 feeding period. No effect was noticed in the average percentage fat during the differ- 

 ent periods. 



OTTA^VA 



