42 Feeds and Feeding. 



n. Exclusive Protein Feeding. 



64. Protein consumption. — In feeding Carnivora it has been 

 found tliat an exclusive protein diet causes an increased decom- 

 position of protein in the body, and that the excess does not 

 therefore go to form flesh. The following table shows results 

 obtained by Voit with a dog fed varying quantities of meat which 

 had been freed from all fat:" 



Feeding increasing amounts of fat-free meat to dog — Yoit. 



Fat-free meat eaten 



per day 



Urea excreted 



Corresp ending to 

 flesh 



The protein consumption with this dog varied from 165 grams 

 (.36 pounds) per day during hunger to nearly 2,500 grams (5.5 

 pounds) when the largest amount of protein was fed; that is, 

 while fed increasing quantities of lean meat the dog did not store 

 up any of this, but turned it off into the urine as urea. Similar 

 experiments with Herbivora have, in the main, given the same 

 results as found with Carnivora. 



From the results given in the last table it is evident that the 

 supply of protein in the food will largely regulate the consump- 

 tion of protein in the body, and consequently the quantity of 

 nitrogen appearing in the urine. The following is a summary of 

 experiments on goats by Stohmann:* 



1 Armsby, Manual of Cattle Feeding, p. 128. 



' BiologiBche Studien, Heft 1, p. 121; Armsby, loo. cit., p. 148. 



