The Colorado Experiment Station. 
96 
drates are taken up and a condition of comfort and general well be¬ 
ing produced in the animal, but that the amount of energy necessarily 
used up in carrying on the animal functions while on the fodder and 
that used up in transforming the fodder constituents into forms 
which are assimilable by the animal are relatively small. In the case 
of the corn fodder, we observe better results with lower consumption 
of dry matter and energy than in the native hay—the two fodders 
producing the same results—while still larger quantities of both dry 
matter and energy were appropriated with the sorghum and saltbush, 
resulting in a loss instead of a gain. There was evidently more 
energy available for the production of flesh in the case of the corn 
fodder than in the two latter cases, though the total energy used up 
was less. 
§229. We cannot present so full an account of the heat or 
energy relations of these fodders. We have determined the gen¬ 
eral values for all of the fodders, but have studied only three of 
them in detail. The amount of heat appropriated by the sheep from 
the respective fodders was as follows, given in small calories: 
Alfalfa, 30,955,663; sorghum, 25,088,621; saltbush, 23,149,533; 
native hay, 22,255,418; corn fodder, 19,424,180; timothy hay, 
17,406,363 calories. We see that the energy appropriated by the 
animals does not stand in the order of the gain or loss. Alfalfa 
produced the greatest gain, and sorghum the greatest loss, with the 
saltbush very close to it. The native hay and corn fodder each pro¬ 
duced a moderate gain, while the timothy produced a slight loss. 
As the urine was not collected, it could not be examined, and we do 
not know how much of the energy appropriated was voided in this 
form. 
§230. The amounts of dry matter digested in the experiments 
with these several fodders were as follows: Alfalfa, 7,734 grams; 
saltbush, 7,351 grams; sorghum, 6,725 grams; native hay, 5,392 
grams; corn fodder, 4,940 grams; timothy hay, 4,501 grams. We 
see that the order is the same as in the case of the heat or energy 
appropriated. The greatest gain, that made on alfalfa, agrees with 
the greatest amount of heat appropriated and the largest amount 
of dry matter digested, but the next two fodders on which gains 
were shown are not the next in the order of the energy appropriated 
or the dry matter digested, but form the fourth and fifth in this 
order, the timothy standing only about 2,000,000 calories below the 
corn fodder. The lot receiving the sorghum and appropriating 
25,088,621 calories, showed a loss of 8^2 pounds, and the one re¬ 
ceiving the saltbush and appropriating 23,149,533 calories showed 
a loss of 8^2 pounds, while that receiving timothy and appropriat¬ 
ing 17,406,363 calories lost but one pound, and that receiving corn 
fodder and appropriating 19,424,180 calories gained 3^2 pounds. 
