10 BULLETIN 1024, U. S. DEPARTMENT OF AGRICULTURE. 
silage was of poor quality, part of it being made from silage 
corn, and because they got less feed in proportion to their weight. 
As Lot 4, fed shock corn, according to Table 3 received more protein 
and considerably more carbohydrates than Lots 1 and 3, their loss 
in weight is attributed to the lack of succulence in their ration. The 
average date on which the cows were turned to pasture was April 22, 
two daee later than the average date on which the calves were 
dropped. 
The last two columns of Table 6 give the number of calves dropped 
in each lot during the winter period and their average age at the 
end of that time. 
Il'ic. 6.—Sire, dam, and offspring. The sire is the registered Shorthorn bull to which 
the cows, used in this experiment, were bred. Note the prepotency of the purebred 
sire as indicated by the calf. 
The relative gain or loss of the cows during the winter and until — 
all the cows had dropped calves does not signify much, because on 
any weigh day there was usually a different number of cows that 
had dropped calves in the different lots. During each year some 
of the cows calved during the latter part of the winter feeding period 
and the others after they were turned on grass. A cow just after 
dropping her calf and for-some time afterwards continues to lose 
weight, especially if milking heavily. Lot 3, receiving silage, straw, 
and POSE. meal, seemed to stay in the best condition through 
the winter. 
Table 7 shows the gains or losses per cow made during summer 
and winter periods and net gain for the year period. 
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“a 
Sheet ay 
