10'2 



Feeds and Feeding. 



conditions. The following Example Table D from Table IV 



of the Appendix presents the food requirements of certain farm 



animals: 



Example Table i>, showing the amount of dry matter and digestible 



nutrients required da/Hy by farm animals per 1,000 pounds live 



weight. 



Note. — The " Sum of nutrients" in the larger table has been omitted 

 from this table in order to simplify the explanation. 



The first subject for consideration is the amount of nutrients 

 required to maintain an ox weighing 1,000 pounds when at rest 

 in the stall, neither gaining nor losing in weight. The table 

 states this to be as follows: Dry matter, 18 pounds; digestible 

 protein, .7 pounds; digestible carbohydrates, 8 pounds; ether 

 extract, .1 pound. A ration containing these nutrients has a nutri- 

 tive ratio of 1 : 11.8. (443) Although the ox is referred to as 

 ''at rest," nevertheless work is being accomplished. The heart 

 is forcing blood currents through the body, and digestion and 

 assimilation are in progress; even the act of standing and breath- 

 ing constitutes work. Each of the many manifestations of life 

 calls for food-fuel and repair material. Conceding that the above 

 feeding standard is correct, the ox which receives less nutrients 

 than here stated will lose in weight, while if more are allowed 

 he will increase in weight. 



n. Calculating Rations for Farm Animals. 

 134. Ration for the steer at rest. — With Table C, giving the 

 digestible nutrients in several common feeding stuffs, and Table D, 

 stating the requirements of the ox for maintenance, we have the 



