GETTING THE MOST FROM FEEDS 95 
rations were compared for feeding dairy cows. Ration A con- 
tained 58 pounds of corn and soy bean silage, 6.8 pounds of mixed 
timothy hay, 2 pounds of linseed meal and 2 pounds of bran. Ration 
B consisted of 4.7 pounds of corn stover, 6.4 pounds of mixed 
timothy hay, 2.5 pounds of linseed meal, 5 pounds of corn meal and 
6 pounds of bran. (a) Compare these two rations as to digestible 
nutrients. (b) Determine nutritive ratio of each ration. 
The value of the feeds was as follows: Corn silage, $2 a ton; 
corn stover, $5; hay, $12; linseed meal, $34; wheat bran, $30; and 
corn meal, $30. (c) What was the daily cost of Ration A? of 
Ration B? What is the difference in cost of the rations? (d) 
Suppose 40 cows are fed 210 days; what is the difference in cost of 
feeding that number of cows during that time if the cheaper ration 
is used? (The results of this trial showed that Ration A produced 
96.7 pounds of milk for each 100 pounds of food, based on dry mat- 
ter contained in it, and Ration B, 81.3 pounds. Thus Ration A was 
better, but was it also cheaper?) 
9. Two HorsE Rations ComMpPareD.—Weight of horses, 1,000 
pounds; kind of work, severe. Feed in Ration A, 10 pounds of 
timothy hay, 14 pounds of oats. Feed in Ration B, 10 pounds 
timothy hay, 2 pounds linseed meal and 9 pounds of corn meal. 
(a) Compare the two rations for digestible nutrients. Value of 
feeds, hay $16 a ton, oats 56 cents a bushel, corn 65 cents a bushel, 
and linseed meal $30 a ton. 
(b) What is the cost of each ration? 
(c) What is the difference in daily cost? 
(d) If six horses are fed for nine months, what would be the 
saving if the cheaper ration were fed? 
(e) Is the cheaper ration less efficient? Why? 
10. Cost oF Nutrients.—Complete the following table and cal- 
culate the digestible protein and total digestible nutrients that can 
be procured for $1. In making the calculation use the prices of 
your local or home market. What are the three most expensive 
feeds? The cheapest? 
CoMPARING FEED PRICES 
Nutrients procurable for $1 
5 . Pounds 
mer Price | for$t [protein | Potal digestible 
eum nutrients 
COrh, 2ulze2oosss5 
Oats 2.252 224-25 i 
Wheat bran ----- 
Linseed meal ---- 
Gluten meal ----- 
Cottonseed meal-_- 
Timothy hay ---- 
Clover hay ------ 
