FEEDS AND FEEDING. 415 



SECTION LXVIIL RATIONS. 



Trial Ration. Referring to Tables I and 2, and 

 knowing the meaning of the terms as set forth in the 

 preceding pages under Feeds and Feeding, it will now 

 be a simple matter of arithmetic and judgment to 

 compute or balance any ration. Let us suppose, for 

 example, that we have a horse or a mule at home 

 plowing. Plowing all day is hard or heavy work. 

 Now if we turn to Table No. 2 we find that the stand- 

 ard for a horse weighing 1,000 Ibs. heavily worked is 

 as follows: 



Digestible Nutritive 



Dry Matter Digestible Protein Carbohydrates and Fat Ratio 

 23 Ibs. 2.3 Ibs. 14.3 Ibs. 1:6.2 



This means that if our horse at home doing heavy 

 work weighs 1,000 Ibs. he will require 23 Ibs. of dry 

 matter, 2.3 Ibs. of digestible protein, and 14.3 Ibs. of 

 digestible carbohydrates to satisfy his needs for a day 

 of twenty-four hours. The digestible carbohydrates 

 includes the digestible nitrogen free extract, digestible 

 fats and digestible fiber. 



Let us suppose we have the following feed stuffs at 

 home: cotton-seed meal, corn (shelled), wheat bran 

 and timothy hay. To figure our ration let us try 2 

 Ibs. of cotton-seed meal, 6 Ibs. of shelled corn, 6 Ibs. 

 of wheat bran and 10 Ibs. of timothy hay. We must 

 now find the total dry matter, digestible protein, diges- 

 tible carbohydrates and fat, in each of the above feeds 

 that make up our ration. Referring to Table i we 

 find that 100 Ibs. of cotton-seed meal contain 91.8 Ibs. 

 dry matter, 37.2 Ibs. of digestible protein, 16.9 Ibs. of 

 digestible carbohydrates and 12.2 Ibs. of digestible 

 fat. Then as 2 Ibs. of cotton-seed meal are included 

 in our trial ration we get the amounts of digestible 

 nutrients as stated. 



2 Ibs. X .918 = 1.836 Ibs. of dry matter. 



2 Ibs. X .372 = 0.744 Ibs. of digestible protein. 



2 Ibs. X .169 = 0.338 Ibs. of digestible carbohydrates. 



2 Ibs. X .122 = 0.244 Ibs. of digestible fat. 



