May, 1916 



Bulletin No. 1 65 



INFLUENCE OF ENVIRONMENT AND 



BREEDING IN INCREASING DAIRY 



PRODUCTION 



Scrub Cow No. 8 Grade Cow No. 68 out of No. 8, by 



Holstein sire 



The daughter's Increase in production over dam was 101% in milk and 



53% in fat 



AGRICULTURAL EXPERIMENT STATION 



IOWA STATE COLLEGE OF AGRICULTURE 

 AND THE MECHANIC ARTS 



Dairy Husbandry Section 



Ames, Iowa 



