FATTENING 253 



be rotated over poor clay and worn-out soils with some stable 

 manure, as they will add fertilizer and produce fairly good graz- 

 ing crops. 



" Permanent sod pastures are necessary for grazing during 

 the very wet or very dry seasons of the year. 



" It requires very rich, well manured, and thoroughly pre- 

 pared soils to grow profitably the grain crops, such as barley, 



Photograph from Dr. E. M. Ranck, Mississippi Agricultural College. 



FIG. 56. Duroc-Jersey pigs digging Johnson grass roots on a corn headland. This is 

 an illustration of how hogs can turn waste material into value. Another type of portable 

 fence is shown in the picture, but it is not so simple as the one designed by Dr. Ranck, 

 Fig. 55. 



wheat, rye, etc., although oats sometimes grow fairly well on 

 poor soils. 



" Whenever possible and practical, the crops should be har- 

 vested by the hogs themselves. It is cheaper, and the exercise is 

 beneficial. 77 (Figs. 55, 56, 57.) 



For hogs fed in pens without grazing crops during the finish- 

 ing period of fattening, the writer of the circular recommends 



