X CONTENTS 



CHAPTER XIV 



, PAGE 



WORK PRODUCTION . .531 



i. The physiology of work production . . . . .531 

 2. The efficiency of the body as a motor ..... 544 

 3. Feed requirements for work 560 



PART IV 



THE FEED SUPPLY 



CHAPTER XV 



THE FEEDING STUFFS 571 



i. Roughages, or coarse fodders . . . . . .572 



2. Roots, tubers and fruits . . . . . . .578 



3. The concentrates 579 



CHAPTER XVI 



RELATIVE VALUES OF FEEDING STUFFS 591 



i. Direct comparisons of feeding stuffs . . . . . 591 

 2. Relative values based on composition and digestibility . 597 

 3. Conditions affecting digestibility . . . . . .601 



CHAPTER XVII 



THE PRODUCTION VALUES OF FEEDING STUFFS .... 630 



i. General considerations 630 



2. Production values as regards energy Net energy values . 634 



3. The computation of net energy values ..... 667 



4. Production values as regards protein 678 



CHAPTER XVIII 



THE COMPUTATION OF RATIONS ....... 689 



i. Feeding standards 689 



2. Feed requirements . . . . . . . .691 



3. Method of computation . . . . . . .697 



