28 ELEMENTARY TREATISE ON STOCK FEEDS AND FEEDING 



principally of the cellulose of which the cell walls are mostly 



composed. It is really the framework or the structure of plants. 



TABLE SHOWING CRUDE FIBER IN PLANT SUBSTANCES 



The fiber in the hulls or seed coats of grains and seeds is much 

 higher than in the grains and seeds from which they are derived. 

 The leaves and stems of the beet and turnip contain a great deal 

 more fiber than their roots. The grasses contain less fiber than 

 straws and more than roots. Stems of plants usually contain a 

 comparatively large amount of fiber. Old plants contain more 

 fiber than young plants because the cell walls of old plants are 

 thicker than in young plants. 



DISTRIBUTION OF FIBER IN PARTS OF CORN 



Fiber 

 Per cent. 



Corn grain 2.2 



Corn bran 12.7 



Corn germ 4.1 



Corn cob .... 30. i 



Corn (whole plant) 20.2 



Corn leaves 24.7 



Corn shucks 32.8 



Fats. These compounds are sometimes called ether extract 

 because they compose those parts of the plant substance that the 

 chemist dissolves out with ether. The substances that ether leaches 



Water 

 Per cent. 



10.6 



9-1 

 10.7 

 10.7 



32.2 



8.9 

 8.1 



