50 FARM ARITHMETIC. 



weighing 1,000 pounds for one month? Twenty such 

 cows for one year? 



Any printed feeding standard is simply a rough guide 

 to be used in feeding animals. It gives approximately 

 the amount to be fed per 1,000 pounds of live weight. 

 Even for animals of the same class and weight it should 

 not be regarded as inflexible. It should be varied as ex- 

 perience and careful observation may seem to warrant. 

 Temperaments and individual peculiarities are always to 

 be considered. 



Compounding of rations. An animal uses food for 

 at least live different and distinct purposes : 



1. To replace the waste of all parts of the body. 



2. To produce heat and to keep the body warm. 



3. To make growth or increase the body in muscle, 

 fat, flesh, bone, etc. 



4. To produce energy so that work may be done. 



5. To produce hair, wool, milk. etc. 



To meet the demands the food must contain protein, 

 carbohydrates and fat. To obtain a food containing these 

 nutrients in the quantity and proportion required for one 

 or more of the above purposes gives rise to the com- 

 pounding of feeding rations. 



107. For a dairy cow giving 22 pounds of milk daily, 

 how many pounds of each of the following feeding stuffs 

 will be required? 



