290 



Effective Farming 



A wide nutritive ratio is one in which the relative proportion 

 of protein is small and the carbohydrates large. A narrow 

 nutritive ratio is one in which the protein is large and the 

 carbohydrates small. In practice a ratio of 1 : 5 or less is said 

 to be narrow ; one from 1 : 5 to 1 : 8 medium, and one larger 

 than 1 : 8 wide. 



158. Kinds of feeds. Feeds may be grouped as concen- 

 trates and roughage. Concentrates are those that yield a large 

 proportion of digestible nutrients. They include the grains, 

 seeds, and by-products. The grains are rich in carbohydrates 

 and rather poor in protein, as shown by the analyses given in 

 Table V. 



TABLE V 



COMPOSITION OF GRAINS 



NOTE. This and the succeeding tabulations of the compositions of 

 feed stuffs are from a pamphlet entitled " Principles of Animal Feed- 

 ing," published by the International Textbook Co. 



Most by-product feeds are rich in protein and poor in car- 

 bohydrates. They are much used with the grains in securing 

 a proper balance of the concentrates of a ration. In Table VI 

 are given the analyses of some of the most common by-product 

 feeds arranged in order of the proportion of protein that they 

 contain. 



