XIV CONTENTS 



of ration to size of animal, 398; The protein supply, PAOES 

 399; Earlier protein standards revised, 400; Presence of 

 growth-promoting bodies, 401; Influence of ration on 

 quality of product, 402; Home supply of feeding-stuffs 

 to be considered, 403; Selection of a ration largely a 

 business matter, 404. 



CHAPTER XVIII 



MAINTENANCE RATIONS 307-318 



Definition of maintenance ration, 405; Character of 

 maintenance ration, 406; Uses of production ration, 407: 

 Maintenance ration easily provided, 408. Maintenance 

 Ration for Bovines: Various investigations concerning 

 maintenance needs, 409; Fasting katabolism as a 

 measure of maintenance needs, 410; Distribution of 

 maintenance energy, 411; Use of nutrients in fasting 

 metabolism, 412; Computation of maintenance needs, 

 413; Maintenance rations for bovines, 414. Maintenance 

 Food for Horses: Studies of the maintenance needs of the 

 horse, 415; Maintenance rations for horses, 416; Main- 

 tenance food for sheep, 417. 



CHAPTER XIX 



MILK PRODUCTION 319-345 



Composition of cow's milk, 418; Milk secretion, 

 419; Food sources of milk proteins, 420; Food sources of 

 milk-fats, 421; The rate of formation of milk solids, 

 422; Uses of nutrients in milk production, 423; Pro- 

 tein requirements for milk production, 424; Relative 

 importance of protein overstated, 425. Feeding 

 Standards for Dairy Cows: Thaer's hay values, 426; 

 Grouven's milk-feeding standards, 427; Wolff's feeding 

 standard, 428; Kuhn's feeding standard, 429; The 

 Wolff-Lehmann feeding standards, 430; American feed- 

 ing standards, 431; Woll's standard, 432; Standards 

 for milk production based on elaborate American feed- 

 ing experiments, 433; Requirements of certain feeding 

 standards for dairy cows, 434; Calculation of rations 



