401 



consume to advantage. The grain mixture consisted of three 

 parts, cracked corn, two parts ground oats and one part wheat 

 bran. 



TABLE F FEED CONSUMPTION AND GAINS FOR SCRUB AND 



GRADE CALVES 



While both lots consumed about the same amount of hay .the 

 grades utilized much larger quantities of grain their consump- 

 tion per head being about 70% more than that of the scrubs. 



TABLE VI DIGESTION OF FEED BY CALVES 6 



This table shows that the powers of the scrubs and grades to 

 digest the various food constituents are practically the same. 



At the end of this 196 day feeding trial these calves were 

 turned over to the Animal Husbandry section for a continuation 

 of the work and it is expected that a more detailed report will 

 be published later. 



SUMMARY 



The results of the eight years' work as given in this prelim- 

 inary report may be summarized as follows: 



1. The scrub cows that came to the station when young (four 

 years old) increased in production rapidly and steadily up to 

 the fourth lactation period, after reaching the station, when they 

 produced 59% more milk and 54% more fat than during the first 

 period. 



2. The scrub cows that came to the station advanced in age 

 did not increase in production after the first year. However 

 it cannot be said that their production was not greater than it 

 had been under their original environment. 



6 The analytical work for these digestion trials was done by W. G. Gaessler of the 

 Chemical Section. 



