8 BULLETIN 488, U. S. DEPART ME NT OF AGRICULTURE. 



These hogs were put on alfalfa pasture, with a small ration of 

 grain, for about a week after they were received at the farm. They 

 were then weighed, ear tagged, and divided into lots which were as 

 uniform as possible. The mean of three consecutive days' weighing 

 was taken as the initial weight. Each hog was weighed separately 

 and individual weights were kept of each throughout the experiment. 

 Lot 1 received no grain : lot 2 received a 1 per cent ration of corn ; 

 lot 3 received 2 per cent corn : lot 4, 2 per cent barley ; and lot 5, 3 

 per cent corn. 



Shorth 7 after the beginning of the first period an outbreak of 

 cholera occurred. Treatment was applied as soon as possible, but 



P4940WI 



Fig. 2. — The alfalfa plats used in 1914 and 1015 in the hog-pasturing experiments at 

 the Scottsbluff Experiment Farm, showing the portable houses and the method of 

 dividing the pastures. 



the disease did enough damage to affect the results of the test. 

 Nevertheless, fair returns were secured, the net returns per acre of 

 alfalfa pasture from Ma} 7 3 to July 2 ranging from $18.70, where 

 no supplement was fed, to $54.19, where the pasture was supple- 

 mented with a 3 per cent ration of corn. 



The plan was to use spring-farrowed pigs during the second period 

 of the experiment, but, as a great many of the spring pigs had died 

 from cholera, it was necessary to select the best of the smaller hogs 

 that had been used during the first period. Xo hogs, however, were 

 used from the two lots which had had no grain and 1 per cent corn, 



