The Cause of "Apoplexy " in Winter-Fed Lambs 



37 



full at all times during the first part of the experiment, with only one 

 feeding place in the rack for each lamb. If for any reason a lamb had 

 to be removed from a pen, he was immediately replaced by another lamb 

 as near his size and weight as possible. Two extra pens of lambs, 15 and 

 16, made up from those not used for the experiment, were fed at the 

 same time to provide lambs to replace any that might die during the ex- 

 periment. It was expected that the feeding of these four lots kept in 

 full pens would give reliable data as to the relative values of wide and 

 narrow rations, the value of succulence in the ration, and the effect of 

 the four different rations on the prevalence of " apoplexy " when the 

 lambs are cared for in a normal way. For further data concerning 

 the cause of apoplexy, some of the lambs were continued after the main 

 experiment was finished. These subsequent data will be discussed later. 



Fig. 16. — Double feed rack 



feeding and management 



The lambs were received from Chicago on October 29, 19 10. They 

 were housed temporarily until November 15th, and were fed mixed hay 

 only. They were then put into their regular pens and the hay con- 

 tinued without grain until November 226.. On November 22d the dif- 

 ferent lots were started on the grain mixtures they were to receive dur- 

 ing the experiment. At first they were fed clover hay and pea-and-oat 

 hay for roughage, and grain once a day at the rate of 8 pounds per day 

 for 58 lambs. Lots A and D were started on silage at the same time. 

 The grain was gradually increased in amount and fed twice a day. 



On December T5th it was decided that all lots were in normal condi- 

 tion and taking their rations regularly. Accurate records were begun 

 on that date. All pens were in the same barn, therefore the conditions 



