CALCULATING ECONOMICAL BALANCED RATIONS. 



Solution : 



Protein. 



Excess. 



Deficiency. 



21 pounds corn silage 



14 pounds shelled corn 



3 pounds corn, oat, barley feed . 

 3 pounds alfalfa hay 



0. 2058 

 .3794 



0. 0147 

 .1641 



.17? 



.5852 

 .1788 



1 pound cottonseed meal, excess. . 

 Pounds cottonseed meal required. 



0.2620) .4064 

 1.55 



HOW TO USE TABLES I AND II. 



Given the desired nutritive ratio and a ration, or certain feeds in 

 bulk to balance, proceed as follows: 



(a) Turn to Table II. In the column representing the nutritive 

 ratio desired find the protein deficiency for 1 pound of each of the 

 carbohydrate feeds that are to be fed. 



(b) For each feed multiply the protein deficiency per pound by 

 the total quantity of that feed, add the products, and the sum is the 

 digestible protein deficiency, or quantity required to balance the 

 carbohydrate feeds. 



(c) Turn to Table I. Note the amount of excess protein in 1 

 pound of each of the protein feeds to be fed given opposite the names 

 of the feeds in the column representing the desired nutritive ratio. 



(d) For each feed multiply the excess protein per pound by the 

 total quantity of that feed, disregarding the one to be used for 

 balancing the ration, and the sum of the products represents the total 

 protein excess in the nitrogenous part of the feed or ration. 



(e) Subtract the total amount of excess digestible protein furnished 

 by the known quantity of the protein feeds from the total amount 

 of protein required by the carbohydrate feeds and divide the differ- 

 ence by the excess amount of digestible protein furnished in 1 pound 

 of the protein feed used for balancing the same. 



TABLE OF EQUIVALENT PRICES. 



It is often desirable in this connection to know what prices per 

 bushel of grain correspond to hundred-weight values, and vice versa. 

 For that reason Table III has been prepared. 



