10 



INVESTIGATION IN ANIMAL NUTRITION 



Table V gives the dates when the calves reached a given weight, the 

 feed consumed during each approximate hundred pounds of gain, and 

 the total consumed up to the time when they were a year old; the 

 amount consumed during the second year ; and the total during the two 

 years. 



TABLE V 



FEED CONSUMED AND ACTUAL GAIN MADE DURING THE VARIOUS STAGES 

 OF GROWTH GROUP V 



From calf to 12 months | 504 | 1,338 | 1,142.4 | 1,138.0 | 1,476.4 



501.7 



From 12 to 24 months 



| 3,408.5 | 2,303.1 | 3,970.4 598.2 



Total | | 504 | 1,338 | 4,550.9 | 3,441.1 | 5,446.8 | 1,099.9 



There is remarkable uniformity in the records of Groups IV and V, 

 especially up to the 800-pound stage, up to which time Group V was a 

 little in the lead, scoring 600 pounds on May 14, while Group IV did 

 not weigh that until June 12 ; and Group V weighed 800 pounds Sep- 

 tember 10, while Group IV weighed 796 pounds October 2. They 

 reached the 903-pound mark on practically a tie, Group IV reaching it 

 November 27, while Group V reached it one day earlier. They also 

 kept abreast during the 1,000- and 1,100-pound periods. During the 

 1,200-pound period, Group V required twelve days more than Group 

 IV. In examining the feeding record it is found in both instances that 

 Group V slackened its rate of gain after a change in the grain mixture. 



In going from 100 to 600 pounds in weight the steers in Group IV 

 consumed 18 pounds more grain and 363 pounds more roughage, while 

 during the time the two groups were gaining from 600 to 1 ,200 pounds 

 the steers in Group V consumed 1,726 pounds more grain and 327 

 pounds less roughage than did those in Group IV. How such a differ- 

 ence in grain required to make a given gain can be avoided is a mat- 

 ter of vital importance. In the case of Group IV there was only one 

 change in the grain mixture during the second year, while with Group 

 V there were four changes. 



Since Group V consumed less grain during the first year than Group 

 IV and so much more during the second year, a comparison of the 



