Animal Nutrition. 



47 



Influence of wide and narrow ratios on flesh produdion — Schulzs 

 and MaercJcer. 



The above experiments were not all conducted with the same 

 animals, and therefore cannot be safely compared with one 

 another. We notice, however, that supplying a smaU amount of 

 protein with a large amount of carbohydrates, as in Experiment 

 6, gives a poor gain of protein and also a low percentage gain of 

 protein digested in the foodj a medium quantity of protein with 

 a liberal supply of carbohydrates as given in the first group of 

 experiments causes a greater consumption of protein in the body, 

 and a larger percentage of digested protein. When we come to 

 the last group of experiments, where the digestible carbohydrates 

 constitute from 4.9 to 2.2 times the quantity of protein present, 

 we again obtain poor results, there being a large waste of protein 

 in the body, and a small gain, both relatively and absolutely, for 

 the total protein supplied. Comparing Experiments 3 and 9, if we 

 may safely do so, we observe that the same gain of protein to the 

 body of the animal was obtained in one case from a little more than 

 one-third of the quantity of digestible protein that was fed in the 

 other case. At the same time the consumption of protein was 

 more than three times as large in the latter case as in the former. 



