78 HOW THE ANIMAL USES ITS FEED 



method of finding the amounts of the various feed stuffs 

 is followed, as in the case of calculating for the Wolfi- 

 Lehmann standards. 



EXERCISES 



1. Calculate a ration for a 250 lb. pig, using the Wolfi-Leh- 

 mann standards. 



2. Calculate the nutritive ratio of the various rations fed on 

 the home farm. 



3. Compound a better ration in each case if the home rations 

 are deficient or expensive. 



4. By the use of the Haecker table calculate a ration, using 

 home-grown feeds, for a 1200 lb. Holstein cow giving 40 lbs. of 

 3.5 per cent mUk daily. 



HOME PROJECT 



Try out for at least one month's time on the home farm 

 some new ration that you have calculated, keeping accurate 

 account of results. 



