﻿28 



BULLETIN 1138, U. S. DEl'AKTM I'.XT OK AGRICULTURE. 



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Fig. 25.— Dried ox heart; changes in weights of pigeons fed. 



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 Fig. 26.— Dried hog heart; changes in weights of pigeons fed. 



TESTS WITH LAMB HEART. 



The results of the tests with lamb heart are presented in Table 17. 

 None of the birds fed the ration which contained 15 per cent lamb 

 heart developed polyneuritis during the test period of 63 days; one 

 bird lost 7.4 per cent in weight, while the two others gained 3.7 and 

 2.7 per cent, respectively. Three pigeons were fed a ration con- 

 taining 25 per cent lamb heart; one developed polyneuritis on the 

 thirty-fourth day, even though it had gained 8.5 per cent in weight; 

 the two other birds were in fine condition at the close of the test on 

 the sixty- third day. Figure 27 shows the changes in weight of 

 pigeons that were fed lamb heart. 



Table 17. — Experimental feeding of dried lamb heart and polished rice. 



Heart ration. 



Pigeon 

 No. 



Survival 

 period. 



Change 

 in weight. 



Result. 



PEN 49. 

 15 per cent lamb heart 



2 



Days. 

 63 



Per cent. 



+3.7 

 -7.4 

 +2.7 



Fine condition end of test. 



Do 



134 63 

 176 j 63 



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Do 



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63 



-0.3 













PEN 50. 



82 

 838 



63 

 63 



+ 17.5 

 + 10.5 

 +8.5 



Do. 



Do 



Do. 



Do 



284 34 



Polyneuritis. 











53 



+ 12.2 









