22G 



IiErOET OF FaEMEKS' I^"STITUTES 



but it is interesting to note that here again the figures, if indi- 

 cating anything, show that poultry digest more like cattle than 

 like swine. Thus we have : 



Protein 



K F. E. 



Poultry 73.6 per cent 



Cattle 72.4 per cent 



Swine 80.4 per cent 



'Poultry 79.4 per cent 



Cattle 83.3 per cent 



Swine 87.9 per cent 



rPoultry 72.4 per cent 



J Cattle 78.7 per cent 



I Swine 07.6 per cent 



Now to compare the average percentage of the nutrients digested 

 in the eight feeds common to each group — namely, whole corn, 

 corn meal, wheat, barley, Canada field peas, millet, wheat bran 

 and potatoes — we find : 



Fat, 



Protein , 



K F. E. 



Fat, 



Poultry 72.0 per cent 



Cattle 70.2 per cent 



Swine 78.6 per cent 



'Poultry 72.3 per cent 



Cattle 87.0 per cent 



Swine 88.3 per cent 



Poultry 71.3 per cent 



Cattle 75.0 per cent 



Swine 63.1 per cent 



This, it is to be remembered, is a comparison where the same 

 feeds are common to each group of animals and undoubtedly 

 more comparable than the above table. We still find our digest- 

 ive relationship of poultry to cattle holding good, although the 

 variation is rather wide, especially in nitrogen-free-extract. To 

 state the result in figures, we find that when compared to cattle, 

 poultry digest protein in the ratio 100: 97.5, whe^-eas when com- 

 pared to swine they digest protein in the ratio of 100: 109.2, 



