480 



PRINCIPLES OF AGRICULTURAL CHEMISTRY 



the mixture. The difference in bulk of the ration should be ad- 







justed when such substitutions are made, unless it comes within 

 the range of the variations allowed. 



The preceding illustration shows the method which may be 

 followed in reducing the cost of a ration. In substituting for pro- 

 teids, a suitable feed providing the proteids at the lowest cost 

 per unit should be used. In substituting for productive value 

 a suitable feed providing the most productive value for 

 the money should be used, and the same remark applies to sub- 

 stituting for bulk. 



Tables of Feeding Value. The following tables show the feed- 

 ing values of a number of feeds. 



AVERAGE FEEDING VALUE OF FEEDS. 



Total dry mat- 



Digestible pro- 



ter in 100 Ibs. teids in 100 Ibs 



Productive 

 value in icolbs. 



GRAIN AND SEED 



Barley 89.1 



Corn 89. i 



Corn and cob meal 84.9 



Kaffir corn 89.9 



Oats 89.0 



Pea meal 89.5 



Milo maize 89.5 



Rye 88.4 



Wheat 89.5 



Cotton seed 89. 7 



BY-PRODUCTS 



Brewers grains, dry 92.0 



Cottonseed meal, average 91.8 



Cottonseed meal, Texas 92.0 



Gluten feed, dry 91.9 



Linseed meal, old process 90.8 



Linseed meal, new process 90 i 



Rye bran 88.2 



Wheat bran 88. i 



Wheat shorts 87.9 



Rice bran 90. i 



Rice polish 88.5 



Corn bran 90.9 



Peanut meal 89.3 



Cold pressed cottonseed cake 90.2 



Molasses (cane) 77.6 



Corn cobs 89.3 



Oat hulls 92.7 



Rice hulls 91.0 



Wheat chaff 85.7 



Cottonseed hulls 88.9 



8-4 

 6.8 



4-5 



7.0 



8.0 



16.8 



7i 

 8.1 



8-9 

 H-5 



19.0 

 35-2 

 39-0 



20.0 

 27-5 

 29-3 



ii. 4 



12.0 

 13.0 

 9-0 

 8-3 



6-5 

 42.9 

 17.1 



0.7 



0-3 

 0.4 

 0.9 

 0.6 



18.8 



20.6 



16.5 

 18.3 



150 



16.6 



18.4 

 18.9 

 17-3 



21.2 



14.0 



19-5 

 I 9 .I 

 18.4 

 18.4 



17.4 

 13.2 

 12. 

 I 7 .6 

 19.8 

 20.9 



18.6 



20.2 

 10.0 

 13.2 



5-3 



4.5 

 0.7 



6.1 

 3- 



