FEEDING THE STOCK 99 



Why Growing Animals Need Plenty of Food. 

 Growing animals must not only keep this waste re- 

 paired, but they must also increase in weight. For 

 this reason they need more food in proportion to their 

 size. First, waste must be repaired before the animal 

 can grow; then, whatever is left over, goes toward 

 building up the body. 



Food Supply and Energy. Work horses must feel 

 strong ; that is, they must be full of energy. But what 

 is energy ? Simply this : power to do work. A healthy 

 man has more energy than a healthy boy. He has 

 stronger muscles. He has greater power to do work 

 and can endure more of it. So the horse to do work 

 must have muscular energy. His muscles are formed 

 from the food that he eats. 



Food Supply and Special Products. The milk cow 

 must have more food than the one that gives no milk. 

 She must have food to build up her body, to repair the 

 waste, to keep her warm, to furnish her with energy, 

 and, besides this, she must have additional food out of 

 which to make milk. Let her food supply decrease 

 and she will at once show it in the reduced amount 

 of milk that she gives. You have all noticed this 

 shrinkage when the pastures get "short" in summer. 

 So, too, the sheep must have extra food out of which 

 to make wool, and the hen requires special food from 

 which to make eggs. 



Kind of Food Needed Varies. If a man were to 

 start a shoe factory he would buy leather, pegs, nails 

 and thread. These are the raw materials out of which 



