DIGESTIBILITY OF FISH. 13 



Data of digestion experiments with salmon in a simple mixed diet — Continued. 





Weight 

 of food. 



Constituents of foods. 



Experiment, subject, and diet. 



Water. 



Protein. 



Fat. 



Carbohy- 

 drates. 



Ash. 



Experiment No. 563, subject P. K.: 



Grams. 



1, 286. 



553.0 



325.0 



717.0 



60.0 



Grams. 



796.4 



417. 5 



22.4 



606.6 



Grams. 



320.0 



13.8 



26.3 



2.9 



Grams. 



139.4 



0.6 



43.6 



3.6 



Grams. 



Grams. 

 30.2 





115.6 



230.1 



101.8 



60.0 



5.5 





2.6 



Fruit 



2.1 

















Total food consumed 



2,941.0 

 49.0 



1, 842. 9 



363.0 



16.4 



346.6 



187.2 



6.2 



181.0 



507. 5 

 19.1 



488.4 



40.4 





7.3 







33.1 

















95.5 



96.7 



96.2 



81.9 











Experiment No. 564, subject C. J. W.: 



1,115.0 

 431.0 

 177.0 

 842.0 

 105.0 



690.5 



325.4 



12.2 



712.3 



277.4 

 10.8 

 14.4 

 3.4 



120.9 



0.4 



23.7 



4.2 





26.2 





90.1 

 125.3 

 119.6 

 105.0 



4.3 





1.4 



Fruit 



2.5 

















Total food consumed 



2,670.0 

 56.0 



1, 740. 4 



SOff.O 



23.6 



282.4 



149.2 



7.4 



141.8 



440.0 



18.4 



421.6 



34.4 





6.6 



Amount utilized 





27.8 











Per cent utilized 







92.3 



95.0 



95.8 



80.8 











Average food consumed per subject per day 



745.4 



466.2 



98.0 



49.6 



121.0 



10.6 



Summary of digestion experiments with salmon in a simple mixed diet. 



Experiment No. 



Subject. 



Protein. 



Fat. 



Carbo- 

 hydrates. 



561 

 502 

 563 

 564 



H.R.G 



A. J.H 



P.K 



C.J. W 



Average 



Per cent. 

 91-9 

 91.7 

 95.5 

 92.3 



Per cent. 

 96.9 

 88.7 

 96-7 

 95.0 



Per cent. 

 96.6 

 94.0 

 96.2 

 95.8 



Per cent. 

 85. 1 

 76. J 

 81. J 



92.9 



94.3 



95.7 



81.4 



In the test periods in which canned salmon was included in the 

 experimental ration, the subjects ate an average of 355 grams of 

 salmon daily. The total diet eaten supplied 98 grams of protein, 50 

 grams of fat, and 121 grams of carbohydrates per day, and the coef- 

 ficients of digestibility were found to be 92.9 per cent for protein, 

 94.3 per cent for fat, and 95.7 per cent for carbohydrates. The fuel 

 value of the diet was 1,326 calories. When allowance is made for 

 the undigested protein and fat residues occurring in the feces result- 

 ing from the accessory foods of the diet, the digestibility for the 

 protein and fat of salmon is found to be 93.2 per cent and 93.7 per 

 cent, respectively, and indicates that salmon is very completely uti- 

 lized by the human body. 



