ENERGY VALUES OF RATIONS FOR FARM ANIMALS, 21 
To supply 14 therms requires 14+ 0.634 = 22.08 pounds of total feed, 
consisting of 7.36 pounds of clover hay and 14.72 pounds of. corn-and- 
cob meal, or, in round numbers, 714 pounds of hay and 15 pounds of 
meal. 
This, of course, represents the average ration for the whole feeding 
period. At the begnning the feed will naturally be lighter and 
consist to a larger extent of hay, while the amount of feed, and 
especially the proportion of grain, will be gradually increased until 
toward the end of the feeding the animals are consuming all the 
orain they will take, with only enough hay to insure the necessary 
bulk and proper digestion. Naturally, too, the form in which the 
corn is given will usually be varied in the course of the feeding. 
~ IMPROVEMENT OF A RATION. 
In the foregoing example it was assumed that the feeding stuffs to 
be used had been decided upon and attention was directed simply to 
the quantity required. Let us now take up the question from the 
other end and see whether a study of the ration may not yield some 
suggestion of possible improvement. 
According to the table on pages 11-13, clover hay and corn-and- 
cob meal, respectively, contain in 100 pounds— 
Total dry | Digestible,| Net energ 
Feed. matter. protein. value. y 
Pounds. Pounds. Therms. 
(CHORAL? DANY epics oc he An Goat oes Aree MI PSs 87.1 4.9 38. 68 
Gorn-and=colrmi Cale sees a eeies See OR eee ht ee ee ee ae 89.6 5.7 75. 80 
The 714 pounds of clover hay in the ration will evidently contain: 
87.1 <X0.075=6.53 pounds of dry matter. 
4.9 <0.075=0.37 pound of digestible protein. 
38.68 X0.075=2.90 therms of net energy value. 
A precisely similar computation for the corn-and-cob meal gives 
the following results: 
89.6 X0.15=13.44 pounds of dry matter. 
5.7X0.15= 0.85 pound of digestible protein. 
75.8 X0.15=11.37 therms of net energy. 
Adding these amounts, we find that the total ration contains: 
Total dry | Digestible | Net energy 
Kind and amount of feed. matter. protein. value. 
Pounds. Pounds. Therms. 
ham Oren yond s OUTIAS Rs eae She ie ia cin Sie a on nepal ale wie le bieteealele oboe e 6. 53 0. 37 
Comn-and=copneal popounds. 4s. 22-2 seeesee ob. 2 cece eee eee 13. 44 85 11.37 
