INDEX 



731 



Fasting : 



energy katabolism in, 251 

 functions of protein in, 255 

 katabolism, 249 

 computation of, 282 

 conditions affecting, 258 

 energy expended in, 251, 257 

 influence on, 

 of body fat, 252 



external temperature, 262, 265 

 muscular activity, 261 

 previous feeding, 253 

 size of animal, 258 

 standing and lying, 262 

 substances katabolized, in, 249 

 protein katabolism in, 251 

 normally small, 251 

 variable, 251 

 Fat and lean, proportions of in carcass, 



424 

 Fat: 



addition of, to dairy rations, 517 

 animal, sources of, 173 

 body, influence of on fasting katabol- 

 ism, 252 



proportion of in offal, 56 

 computation of gain or loss of, 205 

 crude, determination of, in feeding 



stuffs, 70 



gain or loss of, 205 

 manufacture of, 172 

 minimum of, for milk production, 519 

 mobilization of reserve, 177 

 of feed, resynthesis of, 171 

 of milk, influence of exercise on yield 



of, 482 

 origin of, 466 



percentage of, in lean meat, 356 

 milk, influence of feed on, 528 

 milk solids, influence of feed on, 529 

 production, protein unnecessary for, 



. 363 

 proportion of, in meat, 425 



relative utilization of carbohydrates 



and, for work production, 553 



requirements of, for milk production, 



5i6 



storage of, 172 

 Fatigue, influence of, on efficiency of 



body, 556 



milk production, 482 

 Fats, 1 6 



anabolism of, 171 



animal, elementary composition of, 21 

 chemical changes in resorption of, 108 



Fats, continued 



chemical reactions of, 18 



digestion of, 88, 95 



distinction between oils and, 19 



emulsification of, in digestion, 95 



emulsion of, 19 



formation of carbohydrates from, 178 

 from carbohydrates, 155, 174 

 protein, 168, 173 



functions of, 186 



hydrolysis of, 18 



katabolism of, 176 



melting points of, 19 



metabolism of, 171 



molecular structure of, 17 



native, 19 



occurrence of, i 



of milk, 459 



oxidation of, at /3 carbon atom, 177 



physical properties of, 18 



relation of, to growth, 421 



saponification of, in digestion, 96 



specific effects of feeds associated with, 



527 

 Fattening, 350 



best age for, 436 



composition of increase in, 350, 352, 

 353, 354, 364 



concurrent, in milk production, 513 



contrast with growth, 396 



during growth, 448 



energy content of gain in, 361 



energy requirements for, 361, 448 



equivalent energy values for, 572 



gain of protein in, 354, 364 



influence of condition on, 438 

 on composition of lean meat, 356 

 energy requirements for mainte- 

 nance, 306 



net energy values for, 360 



object of, 358, 427 



of mature animals, 350 



pigs, protein requirements of, 411 



protein requirements for, 363, 446 



rations, protein in, 364 



requirements, 350, 359, 361, 363, 446, 

 448 



stage of, influence of, on energy re- 

 quirements, 362 



utilization of protein in, 364 

 Fatty acids, 17 

 Feces, 105, 109 



as excretory product, 109 

 feed residue, 109 



composition of, in 



