DIGESTIBILITY OF MISCELLANEOUS ANIMAL FATS. 7 



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





Weight 

 of foods. 



Constituents of foods. 



Experiments, subjects, and diet. 



Water. 



Protein. 



Eat. 



Carbohy- 

 drate. 



Ash. 



Experiment No. 714, subject A. A. R.: 



Grams. 

 1, 428. 



237.0 

 1, 204. 



168.0 



Grams. 



771.0 



21.3 



1,046.3 



Grams. 



26.3 



25.1 



9.6 



Grams. 



167.8 



3.6 



2.4 



Grams. 

 451.8 

 183.2 

 139.7 

 168.0 



Grams. 

 11.1 





3.8 



Fruit 1 



6.0 



















3, 037. 

 104.0 



1, 838. 6 



61.0 

 13.1 

 47.9 



173.8 



21.4 



152.4 



942.7 



59.4 



883.3 



20.9 





10.1 







10.8 

















78.5 



87.7 



93.7 



51.7 











Average food consumed per subject per day 



971.3 



945.5 



22.9 



61.9 



333.9 



7.1 



Summary of digestion experiments with kid fat in a simple mixed diet. 





Subject. 



Digestibility of entire ration. 



Estima- 

 ted di- 



Experiment No. 



Protein. 



Fat. 



Carbohy- 

 drate. 



Ash. 



gestibil- 

 ity of 

 kid fat 

 alone. 



712 



P. K 



Per cent. 

 89.3 

 97.1 



78.5 



Percent. 

 91.0 

 95.2 



87.7 



Per cent. 

 95.7 

 95.3 

 93.7 



Per cent. 

 65.8 

 74.7 

 51.7 



Per cent. 

 94.1 



713 



J. C. M 



98.4 



714 



A. A. R 



93.4 











88.3 91.3 



94.9 



64.1 



95.3 













The coefficients of digestibility of the diet as a whole were found to 

 be 88.3 per cent for protein, 91.3 per cent for fat, 94.9 per cent for 

 carbohydrate, and the estimated digestibility of kid fat alone is 95.3 

 per cent. This figure obtained for the digestibility of kid fat is per- 

 haps not directly comparable with the coefficient of digestibility, 88 

 per cent, previously reported 1 for mutton fat, since the mutton fat 

 was kidney fat and the kid fat was a mixed fat obtained from all 

 parts of the carcass, and as has been previously noted, 2 the nature of 

 fat varies somewhat with the part of the body from which it is taken. 

 Though a little lower it compares very favorably in digestibility with 

 goat's butter which was 99 per cent digested. The average amount 

 of kid fat eaten daily, 62 grams, was somewhat in excess of 53 grams, 

 the average daily consumption of mutton fat. 



In the reports of their physical condition during the test period, 

 none of the subjects made any mention of any laxative effect or other 

 digestive disturbances resulting from the experimental diet, and 

 accordingly on the basis of the experiments here reported, it may be 

 assumed that kid fat, when eaten in amounts not in excess of 60 



'TJ. S. Dept Agr. Bui. 310 (1915), p. 21. 

 2 U. S. Dept. Agr. Bui. 507 (1917), p. 9. 



