102 



Feeds and Feeding. 



conditions. The foUoTring Example Table D from Table TV 

 of the Appendix presents the food reqnirements of certain farm 

 animals: 



Example Table D, showing the amount of dry matter and digestible 

 nutrients required daily by farm animals per 1,000 pounds live 

 weight. 



Ox at complete rest in 

 staU 



Fattening cattle (first 

 period) 



MUch cow (yielding 22 

 pounds daily) 



Horse (medium work).... 



Drv 



matter. 



Lbs. 

 18.0 



30.0 



29.0 

 24.0 



Digestible nutrients. 



Protein, 



Lbs. 

 0.7 



2.5 



2.5 

 2.0 



Carbohy- 

 drat«i. 



Lbs. 

 8.0 



15.0 



13.0 

 11.0 



Ether 

 extract. 



Lbs. 

 0.1 



0.5 



0.5 

 0.6 



Nutritive 

 ratio. 



1 :11.8 



1 :6.5 



1 :5.7 

 1 :6.2 



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 wlien 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 poimds; 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 0, giTing the 

 digestible nutrients in several common feeding stu:£fe, and Table D, 

 statiug the requirements of the ox for matatenanee, we have the 



