SOME SCIENTIFIC TERMS IN FEEDING 5Q 



ents, or one day's food, for an animal of a certain 

 weight under ordinary conditions. 



The subject is complicated in so many ways that 

 it is out of the question to say with great definite- 

 ness in the present light of feeding knowledge just 

 what amount of each nutrient to give so the very 

 best results may be obtained for the average animal 



WHEN THE FEEDING PERIOD Is EXTENDED 



When fattening steers were fed for 56 days slightly over 700 pounds of 

 food were consumed for each 100 pounds of gain. When the feeding period 

 was lengthened to 182 days over a thousand pounds of grain was necessary 

 to give 100 pounds of increase. 



under the average methods of feeding. The early 

 standards proposed by German experimenters have 

 been somewhat modified by other investigators, but 

 so far, even though other attempts have been made 

 to simplify these standards, the original Wolff-Leh- 

 mann feeding standards are still the most popular 

 guides in all studies of ration making. 



Maintenance Standard. For one thing, these 

 early teachers stated that less nutrients are neces- 

 sary for animals doing no work, or giving no milk, 

 or not fed for fattening purposes, than for animals 

 actually so engaged. This has given rise to a stand- 

 ard for maintenance when the animal is at rest in 



