in that his maintenance requirement was less while his capacity to 

 consume feed was greater. On the moderate rations fed, he mani- 

 fested this superiority, however, not in the form of greater gain of 

 live weight from a unit of feed, but in the production of higher 

 quality of product, representing the storage of more energy avail- 

 able as human food. 



Feed Requirements for Growth. 



It is of interest to compare the rations consumed and the gains 

 made by these two steers with the accepted feed requirements of 

 such animals as formulated in the current tables of "feeding stan- 

 dards" for growing cattle. The most recent and generally accepted of 

 these are Kellner's* which are expressed in terms of digestible protein 

 and "starch values", one kilogram starch value being equivalent to 

 2356 Cals. of available energy. Kellner's standards are as follows, 

 the starch values being reduced to their equivalents in available 

 energy expressed in Therms.** 



Table p. Kellner's Feeding Standards for Growing Cattle. 



The live weight of the pure-bred steer at the beginning of the 

 investigation corresponded with the weight assumed by Kellner for 

 animals of the same age, being, if anything, a trifle higher, but the 

 weight of the scrub steer was considerably less. The later weights 

 of the two steers cannot be compared with those predicated by Kell- 



* "Die Erriahrung der Landwirtschaftl. Nutztiere", 4th Ed., 602. 

 ** A Therm equals 1000 kilogram Calories. 



(19) 



