266 PRINCIPLES OF FARM PRACTICE 



vided with well-drained lots not too much shaded, clean 

 water, and sanitary houses well lighted and ventilated, which 

 should be kept clean and purified with whitewash and dis- 

 infectants. 



Feeding. When applying the principles of feeding dis- 

 cussed in a previous chapter, securing gain in weight eco- 

 nomically must not be lost sight of. The practice of feeding 

 corn alone, so much followed in the Corn Belt, ignores the 



Lard type of hog. Duroc-Jersey. (U.S. Dept. of Agriculture.) 



need of a well-balanced ration and is expensive. The cost of 

 producing pork may be lowered materially by using pasture 

 and forage crops to supplement grain feed. Clover, alfalfa, 

 vetch, soy beans, cowpeas, rye, oats, and rape are excellent 

 forage crops for hogs. When non-leguminous crops are used 

 for forage, they should be balanced by the use of some protein 

 concentrate, such as tankage. If rapid gains are desired, a 

 full ration of grain should be fed along with the forage; but 

 if the greatest economy is to be practiced, the proportion of 

 grain is reduced. 



