30 Western Live-stock Alanagement 
live-stock, while nutrition is concerned with growth and 
development of the individual. It is too large a subject 
to be handled in the space now available but is none the 
less worthy of careful consideration on the part of the 
stockman. The cattle- or sheep-man running stock on 
the range does not have so great a need for a scientific 
knowledge of feeding, but everyone running stock on the 
farm where much hay, grain, or silage is used will find 
it much to his advantage to have a fair knowledge of sci- 
entific feeding and especially of nutritive ratios, feeding 
standards, and the compounding of rations. A list of 
suitable bulletins and books along this line may be ob- 
tained by writing to any agricultural college. 
DIFFERENT STOCK COMPARED 
The different kinds of live-stock vary greatly in the 
returns which they give for every hundred pounds of di- 
gestible matter which they consume in their feed. For 
example, a hundred pounds of digestible matter fed to a 
good dairy cow will give a product of at least twice the 
money value that would be obtained from the same amount 
of feed fed to a fattening steer. Likewise the amount of 
edible solids suitable for human consumption produced 
by the dairy cow will be very much higher than that pro- 
duced by the steer. The pig also produces a very high 
return both in human food and the money value of the 
product; every hundred pounds of digestible nutrients 
compares in this way very favorably with the dairy cow. 
The sheep, on the other hand, gives a relatively low re- 
turn for each hundred pounds of digestible matter con- 
sumed, although he, as a rule, brings slightly higher re- 
turns than does the steer. The horse is of course not a 
