52 FEEDING FARM ANIMALS 



all feeding rations on the digestible matter rather 

 than on the total composition is clearly seen. Only 

 a part of the food taken into the stomach is assim- 

 ilated just a part; sometimes 90 per cent, some- 

 times 75 per cent, some times 50 per cent and in the 

 case of some foods as little as 25 per cent is digesti- 

 ble. Hence, in every feed there is a part lost and 





HE HAD A GOOD RATION 



This rs a picture of the champion grade steer at the 1909 International 

 live stock show. He was fed a variety of food, and with great care and 

 thought. 



wasted to the animal ; therefore, this serves no con- 

 tribution to the nutriment of the body. 



Nor can one constituent be used wholly to take 

 the place of any other. Since protein contains nitro- 

 gen and sulphur in addition to carbon, hydrogen and 

 oxygen, it is evident that neither the carbohydrates 

 nor the fats which contain carbon, hydrogen and 



