xv iii CONTENTS 



PAGE 



or Fat, p. 283; Crude Fiber, p. 284; Nitrogen-Free Extract, 

 p. 284; Composition of Feeds and Products Compared, 

 p. 284. 



Functions of the Different Food Materials 285 



Water, p. 285; Ash, p. 285; Protein, p. 286; Fats, p. 286; 

 Carbohydrates, p. 286. 



Digestibility of Feeds 287 



Feeds Differ in Digestibility, p. 287; Digestible Nutrients 

 in Feeds, p. 288; Effect of Time of Harvesting on Digesti- 

 bility, p. 288. 



Maintenance and Productive Values 289 



Maintenance, p. 289; External Work, p. 289; Production, 

 p. 289; Energy Lost in Digestion and in Production, p. 289; 

 Comparison of Concentrates and Roughage, p. 291. 



Balanced Rations 292 



Food Requirements of Different Animals, p. 292; Carbo- 

 hydrate Equivalent of Fat, p. 293; Nutritive Ratio, p. 293; 

 Feeding Standards, p. 293; Computing Rations, p. 293; 

 Another Method of Computing Rations, p. 296; Cautions 

 in Using Balanced Rations, p. 296. 



Comfort of Animals 297 



Relation of the Animal to Profits 297 



Condimental Foods 298 



Questions and Problems 298 



Collateral Reading 299 



CHAPTER XI 



THE HORSE 301-321 



Substitution of Horse Power for Man Power, p. 301; Types of 

 Horses, p. 302; Draft Horses and Horses for Speed, p. 303; 

 Breeds of Horses, p. 307; How to Tell the Age of Horses, p. 

 308; Care of Horses, p. 311; Training Horses, p. 315; Rules 

 of the Road, p. 316. 



Questions 317 



Laboratory Exercises 318 



Collateral Reading 321 



