Viii CONTENTS 



PAGES 



Appearance 34 



Behavior with water 34 



Reaction ....... 35 



Relation of inorganic constituents to casein in 



milk 35 



Colostrum . . 37 



Acidity of milk 38 



CHAPTER III 



FACTORS THAT AFFECT THE COMPOSITION OF MILK . . 41-68 



Factors that affect the water-content of cow's milk . 41 



Amount of variation 41 



The influence of breed ....'.. 41 



The influence of lactation 42 



Factors that influence percentage of fat and solids in 



milk 43 



Influence of breed 43 



Influence of individuality of cow .... 44 



Influence of age of cow on fat-content of milk . 45 



Influence of stage of lactation on fat-content of milk 46 



Variation from day to day in herd milk . . 48 



Variation from day to day in individual cow . 48 

 Variation of fat-content in different portions of milk 



drawn from the udder .... 49 

 Composition of milk from different quarters of 



udder .... 50 

 Variation of time between milkings in relation to 



fat-content of milk ... . . 51 

 Influence of methods of milking and environment 



on composition of milk . . . 52 



Influence of drouth on composition of milk . . 53 



Effect of food on percentage of fat in milk . 54 



Influence of palm-nut meal on percentage of fat . 57 



Effect of under- and over-feeding ... 59 

 Influence of fatness of cow on percentage of fat in 



milk . 62 



Effect of period of heat 66 



Acidity of milk affected by silage .... 67 



