391 





Fig. 5. Scrub cow 

 no. 52. Best record, 

 4588.4 Ibs. milk, and 

 201.67 Ibs. fat. Six, 

 years old when photo- 

 graphed. 



Fig. 6. Holstein x 

 Scrub no. 69, out of 

 scrub no. 52. Four 

 year old record, 6822.8 

 Ibs. milk and 283.75 

 Ibs. fat, an increase 

 of 49% in milk, 41% 

 in fat and $22.38 in 

 profit over dam's best 

 record. Age three 

 years when photo- 

 graphed. 



Fig. 7. Second gen- 

 eration Holstein grade 

 heifer calf no. 281 of 

 Holstein x Scrub cow 

 no. 69, age 7 months 

 when photographed. 

 Not until second gen- 

 eration do most Hol- 

 stein grades show- 

 white markings typi- 

 cal of purebreds. 



to the breed of the sire but to the fact that no mature records 

 are available and further that before the college owned a herd 

 of Guernseys a bull was borrowed and his daughters, while not 

 mature, have not equalled their dams' records, while a two-year- 

 old grade by our present Guernsey herd bull has produced over 

 101% more milk and 107% more butter fat than her scrub dam, 

 developed here at the station, produced in her best year. 



Only one first generation Jersey grade has freshened and her 

 two lactation periods show an increase of 7% in quantity of 

 milk, 24% in pounds of fat, 15% in per cent of fat and 12% in 

 length of milking period as compared to group of original scrubs. 



