BIRTH WEIGHT OF CALVES 147 
Birth Weight of Calves. 



Ave. Live| _Birth |Relative Weat.| Foetal 
Breed Age rie) Wet. of wate gt of Calf to Dam ny be io 
ows, lbs| pounds | in Per Cent. |day, Lbs. 
Holstein..... | mature 4 1190 107 9.0 . 38 
Ayrshire....| mature ih 965 (has 8.0 227 
Guernsey....| mature 8 1024 79 Test eee 
serseycccek | mature 11 898 67 7.4 . 24 
GS a 2 vears i 625 63 LOSE 22 





The weight of calves at birth is in proportion to weight of 
dams. In proportion to their weight, heifers produce larger 
calves than mature cows. The Holstein calf appears to be 
larger than the Jersey at the time of birth, both absolutely 
and relatively to size of dam.. 
The foetal growth, average per day, was from .038 pound 
with Holstein calves to .022. pound with calves from Jersey 
heifers. 
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