270 Experiments with Dried Blood. Fjune, 



Experiment II. — It was then thought that the addition of a 

 small amount of fresh vegetable food, such as is often given to 

 pigs on farms, might possibly affect the general metabolism 

 of the animals. The pigs in Lot II. were divided into two pens, 

 and one pen received a single kohl-rabi plant per pig per day, 

 in addition to the diet, for another period of four weeks. 

 The results are shown in the following table. The same pro- 

 cedure was adopted with the pigs in Lots I., Ill and IV., where 

 two of the pigs not intended for slaughter were given kohl- 

 rabi and tried against two on a continuation of the experimental 

 diet. 





Weight at 



Weight at Gain or 





start. 



finish. 



loss {—). 



Lot. I. 



lb. 



lb. 



lb. 



A. no kohl-rabi 



153 



199 



46 



B. kohl-rabi . . 



156! 



212J 



56 



Lot II. 





A. no kohl-rabi 



I73i 



160 



-i3i 



B. kohl-rabi . . 





191 



^4 



Lot. III. 





A. no kohl-rabi 



185 



240 



55 



B. kohl-rabi . . 



1 86 J 



238 



54 



Lot. IV. 





A, no kohl-rabi 



1 34 J 





I 



B. kohl-rabi . . 



115 



i53i 



35 



The experiment was then discontinued. 



The kohl-fed pigs 



in Lot 11. , receiving maize meal, improved considerably in 

 health, became lively, and took their food with much greater 

 relish. The control pigs on maize meal alone still refused their 

 food and made a slight loss in weight. 



In Lot IV. the pigs receiving no kohl-rabi did not increase 

 in weight, but were quite lively and in fair general condition. 

 The seventh pig in Lot II. was taken out of the second part of 

 the experiment as he had injured his leg against the feeding- 

 trough. He was placed by himself and given an ad lib. ration 

 of fresh mangolds in addition to maize. In three weeks he had 

 doubled his weight from 35 J lb. to 84 lb. During the period 

 of feeding with kohl-rabi the maize-fed pigs were given an 

 ad lib. diet, but they did not take more than they had done 

 during the course of the first experiment. 



ConcSusions. — The results obtained indicate that the addition 

 of blood to an ordinary farm ration of wheat offals may cause 

 a very considerable gain in weight compared with the results 

 obtained from a farm diet of offals only, while the addition of 

 blood to plain maize meal may give an increase equal to the 

 results obtained from feeding offals only. The results obtained 



