COST OF RATIONS 



155 



It is costing John Smith $0,361 per day per horse. Or it is 

 costing him 15 X $0,361 = $5,415 for his 15 horses per day. 

 We will now substitute some other feeds and see if we cannot 

 reduce John Smith's feed bill. 



A Cheaper Ration. — Oats, shelled corn and timothy hay are the 

 expensive feeds in this ration, considering the nutrients they 

 furnish. By perusing Table I we find that cotton-seed meal 

 contains a high per cent, of digestible protein. We can substi- 

 tute this feed for oats. Shelled corn and corn and cob meal 

 contain about the same amounts of dry matter and digestible 

 carbohydrates, so we may substitute corn and cob meal for 

 shelled corn. The shelled corn is richer in digestible protein 

 than the corn and cob meal but we can get this nut;rient cheaper 

 from our wheat bran. The crab grass hay is of about the same 

 nutritive value as timothy hay. It is also cheaper so we will 

 use crab grass hay in place of timothy hay. A balanced ration 

 from these feeds would be as stated. 



Dry matter 

 pounds 



Digestible 

 protein 

 pounds 



Digestible 

 carbohy- 

 drates 

 pounds 



Digestible 



fat 



pounds 



2 lbs. cotton-seed meal . . 



7 lbs. corn and cob meal 



8 lbs. wheat bran 



12 lbs. crab grass hay . . . . 



29 lbs. total 



Ration 



Standard 



1.836 



5-943 



7.048 



10.764 



25-591 



25.591 

 23- 



0.744 

 0.308 

 0.968 

 0.264 



2.284 



2.284 

 2-3 



0.338 

 4.200 

 3.136 

 5.136 



12.810 



14.464 

 14-3 



0.244 

 0.203 

 0.216 

 0.072 



0.735 



Nutiitive 

 ratio 



1:6.3 

 1:6.2 



Compared to the Standard. — This ration, is better than the one 

 John Smith is feeding. It comes nearer the standard. The dry 

 matter and carbohydrates in John Smith's ration approximate the 

 standard but the protein is too low and his ration is too wide. 

 The dry matter in this second ration is a little high, but animals 

 can take care of an excess of dry matter within certain limits 

 as previously explained. The protein and carbohydrates in the 



