414 COMPUTING THE RATION FOR FARM ANIMALS 



In computing the ration, proper consideration must be given to the 

 digestibility (Table III), and also, as determined by experience, to 

 bulk and palatableness. The fertilizing value of the manure differs 

 with the different feeds, as is indicated in Table IV. 1 



An exact mathematical method of equating rations is worked out 

 by Willard in Bull. 115 of the Kansas Exp. Sta., and condensed in 

 Cyclo. Amer. Agric. Ill, pp. 103-105. It rests on finding the pro- 

 tein-equating factor. 



The Feeding-Standards 



The relation between the protein, on the one hand, and the carbo- 

 hydrates and fat on the other, is known as the nutritive ratio : thus 

 1 : 11.9 means protein 1 part to carbohydrates and fat nearly 12 (11.9) 

 parts. A ratio less than 1 : 5 is usually said to be narrow ; one more 

 than 1 : 7 is said to be wide. 



TABLE I. FEEDING-STANDARDS 

 A. Per day and 1000 Ib. live weight. 2 



1 The tables are abbreviated from Cyclo. Amer. Agric. ; and nos. II, III, 

 and V there adapted from Henry. 



2 The fattening rations are calculated for 1000 Ib., live weight, at the begin- 

 ning of the fattening. 



