8 
BULLETIN 631, U. S. DEPAETMEXT OF AGBICTJLTUBE. 
roughages, hay and hulls. The grain part of the rations was limited 
in every case to a definite and rather small amount. But Table 2 
shows that satisfactory gains were obtained, and Table 3 shows that 
the cost to make 100 pounds of gain was not excessive, although the 
feeds used were all expensive ones. In fact, the gains were made 
cheaply in every case, much more cheaply than can be made with 
older animals, the cost per hundred pounds ranging from $5.14: to 
$6.43. In the previous winter's work it cost from $6.19 to $6.83 to 
make 100 pounds of increase in weight where the same kind of 
calves were used and the same kind of feeds employed, yet in refer- 
ring to the cheapness of gains of the calves the authors stated that — 
The gains were made cheaply. This was due to several factors. First, the 
calves were young and growing, and young animals of all kinds can be made 
to increase in weight more economically than old ones. Second, the calves 
were very thrifty, and so made good use of the feed that they ate. Third, all 
of the rations were extremely palatable, especially the two which had the 
corn-and-cob meal mixed with the cottonseed meal. A young animal of any 
kind will not make satisfactory gains on an unpalatable ration. Fourth, the 
calves had comfortable quarters and were fed and watered regularly. 
Table 3. — Quantity and cost of feed required to make 100 pounds of gain 
{Nov. 11, 1911, to Mar. 3, 1912, 107 days). 
Lot 
No. 
Ration. 
Total 
amount 
of feed 
eaten by 
each calf. 
Pounds 
of feed 
to make 
100 
pounds 
of gain. 
Cost of 
feed to 
make 100 
pounds 
of gain. 
Pounds. 
279 
1,098 
462 
215 
107 
1,058 
445 
130 
260 
1,023 
423 
Pounds. 
134 
528 ; 
222 
115 | 
58 
566 
238 
77 
154 
602 
255 
1 
< Cottonseed hulls 
[ $5. 14 
(Mixed alfalfa hav 
[Cottonseed meal, two-thirds 
2 
1 Cottonseed hulls 
> o. 72 
[Mixed alfalfa hay 
[Cottonseed meal, one-third 
1 Corn-and-cob meal, two-thirds. . . 
3 
1 Cottonseed hulls 
6.43 
[Mixed alfalfa hav 
The calves in lot 1, where cottonseed meal, hulls, and mixed hay 
were used, made the cheapest gains, each 100 pounds of gain in the 
lot, costing only $5.14, whereas an equal amount of increase in weight 
in lots 2 and 3. where corn-and-cob meal constituted a part of the 
ration, cost $5.72 and $6.43, respectively. In this test the corn-and- 
cob meal did not cheapen the ration in either case. In the test pre- 
viously reported, the introduction of a small amount of corn-and-cob 
meal did decrease the cost a few cents, but where the larger propor- 
tion of corn-and-cob meal was employed it cost more to make 100 
pounds of gain than in the lot where cottonseed meal was the sole 
concentrated feed. Lot 3 in both experiments showed up to a con- 
siderable disadvantage. When the two tests are considered together, 
sufficient evidence is at hand to show conclusively that it does not 
