FOOD OF YOUNG ANIMALS. 

 COMPOSITION OF COLOSTRUM. 



117 



COMPOSITION OF MILK. 



The colostrum is characterised by an especially high 

 percentage of albuminoids. In milk we find a smaller 

 proportion of albuminoids and a much larger proportion 

 of sugar. 



The solid matter of milk has a very high feeding 

 value, owing to the large proportion of fat and albumi- 

 noids present and its perfect digestibility. If we 

 take, as before, the heat-producing capacity of dry cotton 

 cake as 100, then the heat-producing capacity of dry 

 cow's milk will be 143. Milk also supplies the ash 

 constituents necessary for the formation of bone and 

 tissue: 1 00 Ibs. of cow's milk will supply about 0*20 Ib. 

 of phosphoric acid, 0*17 Ib. of lime, and 0*17 Ib. of 

 potash. 



The relation of the nitrogenous to the non-nitro- 

 genous constituents of milk is much higher than in most 

 v 3getable foods ; the analyses in the table show a rela- 



