36 



supplying 18.7 per cent. The cost of the dry matter as cal- 

 culated on the basis of a dollar valuation is as' follows: corn 

 silage 199.5 pounds; alfalfa hay "122.29 pounds; dry mash 73.57 

 pounds; skim milk 40.25 pounds; and whole milk 7.71 pounds. The 

 average amount of dry matter consumed by the calves in this lot 

 was 64.35 pounds for each dollar invested in feed. 



The amount of protein required during the first part of the 

 test was .4 pound per hundred pounds live weight. This requirement 

 gradually increased to .5 pound during the last week of the test. 

 The increase in protein consumption was gradual and uniform from 

 the beginning to the end of the test. The protein was furnished 

 largely, through the skim milk, as approximately 47 per cent, was 

 supplied by this material. Alfalfa hay ranks next as a protein car- 

 rier, supplying 38.2 per cent., and dry mash third, furnishing 10.9 

 per cent. 



The carbohydrates consumed by the calves in Lot I varied 

 between .75 pound per hundred pounds live weight during the 

 second week of the test to 2.04 pounds per hundred pounds live 

 weight at the close of the experiment. As with the protein, the in- 

 crease in carbohydrate consumption was gradual and regular from 

 the beginning to the end of the experiment. 



The daily consumption of the various food nutrients indicates 

 an adequate supply. The total amount of dry matter consumed 

 per day was 4.46 pounds; protein, .93 pound; carbohydrates, 3.14 

 pounds; and fat, .106 pound. The nutritive ratio of the average 

 daily ration was 1 13. 6. The daily nutrients required per hundred 

 pounds live weight are as follows: dry matter, 1.57 pounds; pro- 

 tein, .33 pound; carbohydrates, i.n pounds; fat, .037 pound. The 

 ash was supplied largely from two feeds, alfalfa hay and skim milk. 

 The alfalfa hay supplied 57.6 per cent, of ash out of the total daily 

 consumption of approximately .28 pound, and the skim milk supplied 

 2 9-55 P er cent - of ash out of the total of 87.15 per cent, supplied by 

 the two feeds named. 



GROWTH OF CALVES IN LOT I. The average height of the calves 

 in Lot I at the end of the first thirty-day period, was 30.7 inches. 

 The height of the various individuals in the lot varied from 

 29 inches to 33 inches. The rate of growth of the individual calves 

 during the five periods over which it is possible to report is as fol- 

 lows : second month, three increased three inches, five, two inches, 

 and two, one inch in height; the average gain during the second 

 month was 2.1 inches. During the third month, three calves gained 

 three inches, six, two inches, and one, one inch in height ; the average 

 for this period was 2.2 inches. The fourth month but two calves 

 gained three inches, and eight gained two inches in height ; the aver- 

 age for this period was the same as during the second period, 

 2.2 inches. The fifth period, one gained three inches, eight, two 



