10 STORRS AGRICULTURAL EXPERIMENT STATION 
WATER DRANK AND EXERCISE. 
The amount of water drank by the cow on the hay diet was 
an average of 30.4 pounds per day. The cow on the meal diet 
drank an average of 9.2 pounds per day. The animals re- 
ceived no exercise except as they were led from the stall to 
the scales daily to be weighed. 
LIVE WEIGHT. 
The animals were weighed daily and an attempt was made 
to adjust the amount of the ration to maintain the initial 
weight of January 7-13. Mina weighed 792 pounds (average 
of seven weighings) on January 7-13, and 795 pounds at the 
close of the trial, April 17-23. Ethel weighed 730 pounds on 
December 9-12 and 651 pounds on January 7-13. This shrink- 
age is attributed to a loss of food in the paunch and digestive 
tract as a result of the change from roughage to a concentrate 
diet. There is some doubt in the mind of the writer whether 
all of the material in the paunch, derived from the previous 
roughage ration, was eliminated even after the 106 days of 
exclusive meal feeding. In the case of Ethel, after 106 days 
of exclusive meal feeding, and in a later trial with Mina after 
50 days of exclusive meal feeding, more crude fibre was found 
in a week’s composite sample of the feces than could be 
accounted for in meal consumed for the same period. Ethel 
weighed 651 pounds on January 7-13 and 647 pounds on April 
17-23. The physical condition of the animal at the close of 
106 days of exclusive meal feeding was as good, if not better, 
than at the beginning of the trial. It is possible that by the 
substitution of fat for water in the body Ethel may have gained 
in flesh while maintaining a uniform live weight. At the close 
of the exclusive meal trial Ethel received an exclusive hay 
diet, and on May 2-8 weighed 794 pounds, which is 19 pounds 
more than she weighed at the beginning of the exclusive meal 
feeding on December 9-13. 
At the close of the first trial on April 24 the rations for the 
two animals were reversed. Mina received an exclusive meal 
ration and Ethel an exclusive hay ration. The change in 
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