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YIELDS OF GUERNSEY HEIFERS 
ABT Ee OMe, 
145 
From Guernsey Advanced Registry— Yields of Cows and 












Fletfers. 
Age of Animals No. of Average Fat Average Milk |Per Cent. of 
Years Months Records | Yield, pounds Yield, pounds |Fat in Milk 
ina 2 4 16 428.2 8750 4.90 
9 6.2 19 476.8 9331 arent! 
8 4.4 20 441.9 8490 5. 20 
" 4.6 23 470.8 9116 o0LO 
6 4.9 38 457.6 9085 5. 04 
9) 120 29 448.4 8952 5.05 
a 4.6 49 433.5 8495 5.10 
3 4.8 69 403.9 7821 5.16 
2 4.6 Lo (, 352.8 6914 5. 10 
Daily Increase in ae 
at Minntnas seer. ne at (Based on Yearly Yield) 
5 tae .033 From four to five years. 
t 4.6 082 From three to four years. 
3 4.6 . 138 From two to three years. 
2 4.6 



Penman ee ee eee 
The daily increase factor is established at 1 (pountiepes 
day for each day older than two years. The last column of 
Table No. 2 shows, however, that the actual increase in pro- 
duction from two to five years of age is mot a uniform in- 
crease. The three-year-old class gave .138 pound more of 
fat per day: for each day older than the two-year-old class; 
the four-year-old class yielded .o82 pound more of fat per day 
for each day older than the three-year-old class, and the five- 
year-old class yielded only .033 pound more of fat. per day 
for each day over the age of the four-year-old class. 
