380 Western Live-stock Management 
very fine and this should be kept in mind in selecting 
a grinder, since there are many grinders on the market 
which will not grind fine enough for pig feeding. 
WATER SUPPLY 
Pigs drink a large amount of water, from twelve to 
twenty pounds to the pig each day for mature hogs; 
hence a good watering system is very desirable. On 
most western farms, a waterworks system can be installed 
with so little difficulty that not only for the convenience 
of the pigs, but for the general improvement of the farm 
it should be put in as soon as possible. 
WATERING DEVICES 
Since hogs require water at frequent intervals, it is 
desirable that a system be established which will reduce 
the labor of watering to the minimum. It seems justi- 
fiable to go to greater expense in putting in an efficient 
water system than in almost any other item of the pig 
equipment. So far as possible, fields which are to be used 
as pig pastures and which are not provided with springs 
or natural streams should be supplied with pipes running 
from a central water system. If this expense cannot be 
entailed, a suitable device may be made of a large barrel 
with an automatic watering equipment attached. This 
will supply water for 1000 pounds of pigs for four days, 
provided none is wasted. The labor of refilling the barrel 
if the water has to be hauled adds a considerable expense. 
A suitable device if water is piped to the pastures or pens 
may be made with a float valve, the float being boxed 
in at one end of the trough so that the pigs cannot break 
it to pieces, and if the troughs are on the same level, 
one trap can regulate several troughs. (See Plate XVI.) 
