4O2 



VETERINAKY PHYSIOLOGY 



from two to three months old, and weighing about 75 kilos, 

 should contain no less than 4 grins, of protein per kilo per diem, 

 and this should be to the non-protein as 1 to 4'7, while, at the 

 age of two years, the proteins need not exceed 1-6 grms. per 

 kilo per diem, and be to the non-protein food as 1 to 8, and if 

 an older ox is being kept at rest in the stall it may maintain 

 health on a diet containing only about half this amount 

 of protein. 



When, however, the animal is being fed for market, the 

 supply of food must be largely increased : 



Proximate Principles of Diet of Ox per Kilo, in Grms. 



Feeding of Sheep. While those which are being kept for 

 the purpose of producing the slowly growing wool require a 

 comparatively small diet with only a small proportion of 

 protein, animals which are being rapidly fattened require 

 the diet to be nearly doubled, and the proportion of protein 

 increased. 



Feeding of Milk Cows. Since the various constituents of 

 the milk are manufactured in the udder and not merely 

 extracted from the blood, the activity of the udder is the first 

 factor to be considered in the production of milk. The 

 activity of this organ, like that of others, seems to be 

 influenced very markedly by the supply of protein food, and 

 hence it is desirable to give to milk cows a higher proportion 

 of protein food than is given to oxen. A cow may produce 

 about 20 grms. of milk per kilo of body weight per diem, 

 and this contains about 0'6 grm. of protein and 0'7 grm. of 

 fat. Such a cow should have a diet containing, in a form 

 capable of absorption, about 2'5 grms. of protein and 13 - grms. 

 of carbohydrates per kilo of body weight per diem. A milk 

 cow, in fact, should have a diet as abundant in proportion to its 

 weight as a horse doing hard muscular work. 



