INVESTIGATION IN ANIMAL NUTRITION 



three or four top-crosses of full-blood sires of good breeding. By May 

 23, 30 calves had arrived weighing, on an average, 100.5 pounds. Dur- 

 ing the first year they were kept in sections of portable stalls. The 

 second year they were confined in stanchions while they were taking 

 their rations, and the rest of the time had the freedom of a covered 

 runway. 



Table III gives a complete record of the dates when the group made 

 an approximate gain of 100 pounds, the average amount of milk, skim 

 milk, grain, and roughage consumed for the gain made, their weight 

 as yearlings, the amount of feed consumed, and the gain made during 

 the first year. In the lower subdivision is given a similar record for 

 the second year, and the last line gives the total for the two years. 



TABLE III 



FEED CONSUMED AND ACTUAL GAIN MADE DURING THE VARIOUS STAGES 

 OF GROWTH GROUP IV 



The calves attained a weight of 600 pounds in about 13 months, and 

 of 1,204.1 pounds in 24 months, while Group III required 28 months. 

 To reach the 600-pound weight, the steers in Group IV received 23 

 pounds more whole milk, 853 pounds less skim milk, 102 pounds less 

 grain, and 169 pounds less roughage, counting 3 pounds of silage equiv- 

 alent to a pound of hay. Group IV reached the 1,200-pound weight on 

 992 pounds less grain, 339 pounds less roughage, 853 pounds less skim 

 milk, and 23 pounds more whole milk. Most of the calves in the two 

 groups came from the same farms. The environment of the two 

 groups was the same. The same feed as to quality and kind was given, 

 but Group IV received a greater portion of the roughage consumed in 

 the form of corn silage. The cause of the difference in results obtained 

 from the two groups is a matter of vital importance. If followed up, 

 results like the former would lead to great losses and in time financial 



