OPEN SHED COMPARED WITH BARN FOR DAIRY COWS. 5 
though all records come within the five months mentioned. Only 
comparable records have been included. By way of illustration: 
Cow 201 calved October 26, 1914, while in the open shed. In 1915 
she calved September 26, while in the closed barn. Therefore, in 
order that there should be no difference in the records due to time 
of freshening, records for December, 1914, and January, February, 
and March, 1915, in the open shed, were compared with the records 
for November and December, 1915, and January and February, 1916, 
in the closed barn. In a similar way other production records 
covering the same length of time in the two barns and taken the 
same time after calving have been compared. 
The weight of each milking was recorded, and composite samples 
for two days were taken in the middle of the month and tested for 
butterfat. The butterfat test of the composite samples taken during 
the two days was used to calculate the total butterfat production for 
the month. 
FEED RECORDS. 
The grain mixture used throughout the experiment was the same 
for both groups of cows, and usually consisted of 2 parts corn meal, 
2 parts wheat bran, and 1 part cottonseed meal. In some instances 
the mixture was varied slightly in the case of individual cows. The 
roughage consisted of silage and of such hay as was available on the 
farm — cowpea, crimson clover, and red clover. 
All grain fed was accurately weighed out for each animal, and 
records were kept during the periods covered by the production 
record. The hay, silage, and other roughage fed to the cows in the 
open shed the first year were weighed out in quantities sufficient for 
the entire lot, and it was assumed that equal quantities were con- 
sumed by the various individuals. During the last two years of the 
experiment the roughage was weighed out to each animal. The 
quantity of grain fed was determined largely by the production of 
the individual cow, but consideration was given also to her physical 
condition. It was desired to keep all cows in good condition and to 
maintain each individual at a uniform weight. They were fed all the 
silage and hay they would consume without waste. 
The cows in the open shed were bedded of,ten enough to keep the 
inclosure clean, which was almost every day. In the closed barn the 
cows were bedded daily, and bedding enough was used to make them 
comfortable and to absorb the liquid manure. For the five months 
of the year during which data were taken wheat straw was used with 
both groups. 
DISCUSSION OF RESULTS. 
The milk and butterfat production records made under both the 
open-shed and closed-barn conditions are shown in Table 1 
