APPENDIX 243 



tv_j_ Cost Cost per 



^ , per ton 100 lbs. T.»N. 



Corn meal $36.50 $2.18 



Hominy feed 38.05 2.25 



Flour middlings 38.80 2.48 



Standard middlings 35 . 05 2 . 53 



Wheat mixed feed 36.30 2.71 



Ground oats 38 . 60 2 . 74 



Wheat bran 35.05 2.88 



Gluten feed 49 . 80 3 . 09 



Cottonseed meal, 43% 58.05 3.71 



Linseed oil meal 59 . 05 3 . 80 



Having the necessary information as to feeds available we are 

 ready to select the kinds and amounts to be used. When a cow 

 is fed the right proportion of roughage to concentrates she will 

 consume daily about one pound of hay and three pounds of silage 

 for every hundred pounds of live weight. Thus, as a starting 

 point we decide that our ration should contain 12 pounds of hay 

 and 36 pounds of silage. The next problem is to select the grain 

 ration so as to make up the rest of the requirements. At the same 

 time we must keep the dry matter within the limits noted under 

 Table II. Of course, if we added enough we could get all the re- 

 quirements by using only low protein feeds, but this would increase 

 the dry matter much above the upper limit and might make the 

 ration in excess of what the cow would consume. The dry matter 

 allowance for a 1200-pound cow is 1.2 times that given in the note 

 in Table II, or 25 to 30 pounds. 



Experience tells us that to get sufficient protein and the proper 

 amount of dry matter in a grain mixture a part of it must come 

 from a high protein feed. Gluten feed is the cheapest feed in this 

 class according to the table. Hominy is a cheap, low protein 

 feed, but we cannot make the mixture entirely of gluten and 

 hominy because it would lack variety and come entirely from 

 one plant. Thus, let us include one of the wheat feeds. We prefer 

 bran to middlings but it costs considerably more and we may 

 compromise by using a mixture of the two — wheat mixed feed. 

 We will also select ground oats to use in a small amount to add 

 further variety. Next we start constructing the table shown on 

 page 244 trying different amounts of the concentrates selected 

 until the figures come out as we want them. 



