Feeding and Management of Swine. 617 



the limit of their constitutions set by inheritance. On the other 

 hand, the growing pigs which received corn only during the trials 

 were prevented, through lack of sufficient proper nutrients, from 

 developing normal frames of bone and muscle. Pigs can be fed 

 to produce bone and lean meat only as such flesh and bone are 

 the sequence of normal development. It is entirely possible, on 

 the other hand, to so feed or mal-nurture them as to prevent a 

 normal growth of bone and muscle or lean meat while storing 

 abnormally large quantities of fat 



938. The fat of the body. Study will show that the deposi- 

 tion of fat in the body is a matter of feed and conditions, con- 

 trolled primarily by inheritance or constitution and having a 

 wide range for the individual. Fat is reserve fuel stored in 

 the body against a time of need. This true, Nature, which has 

 set close limits to the development of the animal frame, shows 

 no such restriction in the accumulation of fat. If conditions and 

 feed are favorable, the animal stores large quantities of fat, the 

 ability to do so being set by inheritance, character of feed, amount 

 of exercise, etc. 



939. Illustration from the human frame. We can best illus- 

 trate the above by reference to the human frame. No person by 

 what he eats, in kind or quantity, can increase in bone or muscle 

 beyond the normal of constitutional inheritance. On the other 

 hand, the amount of fatty matter which is deposited in the tissues 

 of the human body varies with different individuals, according 

 to constitution, habits, character of food and amount of exercise 

 taken. The grown athlete cannot add a pound of muscle to his 

 body because of the food he eats; indeed, when he goes into 

 training he reduces his weight, losing fat and water from the 

 tissues. While a human being cannot add to his stature nor 

 increase the muscles of his body by the kind of food he eats, the 

 fat stored in the tissues may in extreme cases even double the 

 normal weight of the body. 



940. Lessons for breeder and feeder. The observant feeder 

 and breeder of swine studying these trials must be impressed with 

 the plastic character of the body of the growing animal. He 

 learns that the bones and muscles as well as some of the internal 

 organs of the body can be thrown out of their normal relation 



