171 



cows in the test were registered Ayrshires, their ages and 

 time of dropping last calf before the experiment, follows. 



COW'S na:me. age at coivimenceiment dropped last calf, 



OF TEST. 



Roxanna 8th 8 yrs. 1 mo. Dec. •20th, '92 



Eoxanna 9th 7'years Oct. 7th, '92 



Maid Douglass 8 yrs. 5 mos. Jan. 5th, '93 



Acorn 14 yrs. 9 mos. Dec. 11th, '92 



Nelly Day 11 yrs. 5 mos. Oct. 5th, '92 



The test was commenced January 9th and each Ration 

 was used 10 days. Three days were allowed for change 

 of food to affect the cows, and in the following table the 

 number of lbs. of milk given, shows the yield of each 

 cow, during the last 7 days of each feeding period. The 

 following table gives each of the 8 Rations used, also the 

 number of lbs. of milk given by each cow in the last 7 

 days of each period, the cost of food consumed by each 

 cow, each day, and the food cost of each quart of milk 

 produced by each cow, on each ration. Besides the above, 

 the average cost of a quart of milk, from the 5 cows, on 

 each ration is given, also the average cost of a quart of 

 milk during the whole experimental period. 



In the accompanying table in computing the cost of ra- 

 tions, the various foods used were valued at the following 

 prices per lb. English Hay, Ic, Peas and Oats, 4-5 of 

 Ic, Shorts, 17-20 of Ic, Cob Meal, 40-56 of Ic, O. P. 

 Linseed 1 3-20 c, Oat Meal, I 13-32 c. Mowed Oats, 4-5 

 of Ic, Meadow Hay, 3-5 of Ic, and Mangels at 4 cts. per 

 peck. 



We will now compare results found in the table and 

 see what can be learned. For several weeks previous to 

 Jan. 9th, we had been feeding the first ration, and the 

 milk had been costing us 2.724-cts. per quart. We raise 

 a lot of mangels and usually commence to feed them in 

 December, 8 quarts to each cow per day. By substitut- 



