FEED NUTRIENTS IN THE ANIMAL BODY 



79 



feeds which also are deficient in calcium, such as middhngs, 

 shorts, and red dog flour. Thus, when fed to immature 

 pigs, corn should be supplemented by mineral matter in the 

 form of rock phosphate, ashes, charcoal, salt, air-slacked 

 lime, and bone meal, which may be kept in a trough or self- 

 feeder where they are accessible to the pigs at all times. For 



Fig. 14. — These pigs were fed the same ration as those in Figure 13, 

 with the addition of phosphorus in the form of calcium phosphate. (Wis- 

 consin Experiment Station.) 



other reasons, which will ])e discussed later, corn should be 

 fed to growing pigs in combination with such feeds as milk, 

 tankage, or alfalfa, clover, or blue grass pasture. Figure 13 

 shows pigs whose rations were deficient in phosphorus. 

 Figure 14 shows pigs fed the same ration as those in Figure 

 13, but with the addition of phosphorus in the form of cal- 

 cium phosphate. Figure 15 shows bones from hogs which 

 received a ration low in calcium. Apparently the bones 



