CONTENTS xiii 



CHAPTER VII 



PAGE 



THE FEEDING OF MILCH CATTLE .... 306 



1 . The formation of milk ..... 306 



2. The influence of the constitution of the animal upon 



the formation of milk .... 308 



a. Breed and individuality .... 308 



b. The period of lactation . . . .310 



c. The age of the cow . . . . 3 1 1 



3. The influence of other factors on the formation of milk 311 



a. The frequency and manner of milking . . 311 



b. Performance of work by cows . . .314 



c. Other influences : treatment and care . .316 



4. Methods for ascertaining the effect of food on the 



secretion of milk . . . . . 317 



a. The period system . . . . 317 



b. The group system . . . . .319 



5. The effect of food on the milk production . .321 



a. General considerations . . . .321 



b. The effect of the quantity of food on the milk 



secretion ...... 323 



c. The effect of food-protein on the production 



of milk ...... 325 



d. The effect of non-protein nitrogenous substances 327 



e. The effect of non-nitrogenous nutrients . . 329 

 /. The so-called specific effects of the food-stuffs . 334 

 g. The effect of food-stuffs injurious to health . 338 



6. Food for milch cattle . . . . .338 



APPENDIX 



TABLES FOR THE CALCULATION OF RATIONS . 353 



Method of using the Tables . . . -353 



TABLE I COMPOSITION, DIGESTIBILITY, AND STARCH 

 EQUIVALENTS OF VARIOUS FEEDING-STUFFS . . 360 



TABLE II THE DIGESTIBILITY OF THE FEEDING-STUFFS 

 (DIGESTIBILITY COEFFICIENTS) FROM EXPERIMENTS ON 

 ANIMALS ....... 379 



TABLE III STANDARD RATIONS .... 392 



INDEX . . . . . . .397 



