22 STORRS AGRICULTURAL EXPERIMENT STATION 
trients. This difference in the value of nutrients may be at- 
tributed in part to a difference in the ease of digestion and 
assimilation. 
The smaller gains made by Lot 1 is attributed to the inabil- 
ity of the calves to digest and assimilate the calf meals. For 
the young animal a satisfactory substitute for milk must be 
capable of being easily digested and assimilated. 
D. THE CHARACTER OF THE RATION FOR PIGS AFFECTING THE 
GAINS IN LIVE WEIGHT. 
The pig among farm animals is noted for his great capacity 
for assimilation. But with this animal the economy of gain is 
greatly affected by the character of the ration. The data in 
Table 13 is taken from Bulletin No. 39 of the Storrs Experi- 
ment Station. 
One lot of three pigs required 2,739 pounds of skim milk 
containing 230 of digestible nutrients for 100 pounds of gain. 
Eight lots, of 28 pigs required 1,086 pounds of skim milk and 
- 253 of shorts, containing 258 pounds of digestible nutrients, for 
1oo pounds of gain. And one lot of three pigs required 445 
pounds of shorts containing 294 pounds of digestible nutrients 
for 100 pounds of gain. 
Milk is an easily digested food. When fed alone in the above 
trials, 100 pounds of gain were made from the least amount 
(230 pounds) of digestible nutrients. When shorts were sub- 
stituted for a portion of skim milk, more nutrients (258 
pounds) were required for 100 pounds gain in weight. When 
shorts were fed alone the most nutrients (294 pounds) were 
required for the same gain. 
