30 



EXPERIMENT STATION. 



[Jan. 



i9o: 



During each year twelve cows were kept, but only seven and 

 nine respectively remained during the entire year. The average 

 yield per cow for the seven cows in 1907 was 5,874.4 pounds, 

 the food cost per cow was $78.19 and the cost of a quart of milk 

 3 and 3.2 cents. In 1908 the yield per cow in case of nine cows 

 was 5,639.5 pounds (2,564 quarts), the food cost per cow 

 $82.21 and the food cost per quart of milk 3.3 cents. It will 

 he remembered that these were grade and pure-bred Jerseys, 

 producing 5 per cent. milk. Seven of the cows were pastured 

 about two months each, i.e., during the time they were dry. The 

 remainder of the summer they, in common with the others which 

 did not go to pasture, were fed hay, soiling crops and grain. 

 It was obviously not possible for us to keep an exact record of 

 the cost of care of cow and milk, for the reason that these ani- 

 mals were not kept for producing market milk, but for experi- 

 mental purposes. 



If to the yearly cost of food ($82.21) is added $47.82, rep- 

 resenting the estimated cost of housing and caring for the 

 animal and her product,^ we have $130.03, which, divided by 

 the number of quarts of milk produced (2,564), gives 5.07 

 cents as the cost of one quart of 5 per cent. milk. Another way 

 of getting at substantially the same result is to add 50 per cent, 

 (representing the cost of housing and care) to 3.3 cents, the 

 food cost of a quart, which makes 4.95 cents, or, in round num- 

 bers, 5 cents. The general statement may be made that it is 



1 Kept during the entire year. 



8 $39.82 + $30 =$09.82 — $22 =$47.82. (See previous page.) 



