288 Twenty-seventh Annual Report 



Slimed 8 pounds of feed at the end of the experiment. The following is 

 a summary of the results of this test : 



The hogs consumed about the same amount of food daily, but the 

 cost of the feed was much higher in Lot 2 than in Lot 1, owing to the 

 high market value of the Tepary beans. When rolled barley was fed, 

 570 pounds were required to produce 100 pounds of gain, while 837 

 pounds of the mixture of Tepary beans and rolled barley were re- 

 quired to produce this amount of gain. No doubt the inferior start 

 which Lot 2 had in the beginning of the experiment militated against 

 either large or economical gains. However, it is significant to note 

 that the gains were greater from the lot receiving rolled barley than 

 from the same amount of the mixed food. It is further interesting to 

 note that the hogs receiving the mixed food or balanced ration only 

 gained 42 pounds, while the others gained 64 pounds. This is an in- 

 crease of 50 percent in the gains from the same amount of food. The 

 cost of producing 100 pounds of gain was $8.56 for Lot 1 and $18.83 

 for Lot 2. Certainly one can not hope to make economical gains from 

 feeding Tepary beans valued at 3 cents per pound to hogs. 



EEFECT OE ROLLED BARLEY ON ALFALFA-BEET PULP RATION FOR MILK 



PRODUCTION 



For the past few years the University has been feeding dried beet 

 pulp and alfalfa hay to the dairy herd. Believing that it would be 

 more economical to replace a part of the beet pulp with some grain, a 

 test was run during the spring of 1916 to determine whether it would 

 pay to feed equal parts of rolled barley and beet pulp rather than beet 

 pulp alone as the concentrate part of the ration. Beet pulp is cheaper 

 in price than rolled barley, it costing only $1.35 per cwt., while the 

 latter retails at $1.70 per cwt. It has given splendid results as a feed 

 for dairy cattle, and it is usually cheap in price compared with other 

 feeds. 



Beet pulp and rolled barley are about the same in percentage of 

 digestible nutrients, the barley being a little higher in digestible crude 

 protein and fat, but lower in carbohydrates. Since alfalfa is low in 

 carbohydrates but relatively high in protein, it furnishes the greater 

 part of the protein required in the ration. Where figured at $14.00 per 

 ton, alfalfa hay furnishes nutrients most cheaply, the beet pulp ranking 

 next and the barley last. 



To get a fair test on the rations, ten of the cows were divided into 

 two lots, balancing the lots as nearly as possible according to breed, 



