6 BULLETIN 613, IT. S. DEPARTMENT OF AGRICULTURE. 



per cent, the digestibility of goat's butter. Since all the subjects re- 

 ported that they were in normal physical condition during the entire 

 period of these experiments, it appears that goat's butter is a whole- 

 some valuable food fat. 



KID FAT. 



The consumption of kid fat is quite limited in this country, being 

 confined largely to those of foreign birth and food habits, who in- 

 clude goat or kid meat in their dietary. Just as the consumption of 

 lamb greatly exceeds that of mutton, the amount of kid meat eaten 

 exceeds that of goat meat. Kid fat has little if any sale in this 

 country as an edible fat; however, it seemed of interest to compare 

 its digestibility with that of mutton fat. 



Through the courtesy of the Bureau of Animal Industry, one-half 

 of the carcass of a 6-months-old kid was secured for experimental 

 purposes. The kidney fat and all of the superficial fat was carefully 

 removed, finely cut, and rendered in a double boiler. The meat was 

 cooked and its digestibility determined by means of the usual diges- 

 tion experiments, the results of which are reserved for future dis- 

 cussion. The fat which cooked out of the meat was carefully saved 

 and, since it had not been scorched and was free from any suspended 

 matter, was added to the rendered kidney fat in order that a suffi- 

 cient quantity of fat should be available for the experiments reported 

 below. 



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





Weight 

 of foods. 



Constituents of foods. 



Experiments, subjects, and diet. 



Water. 



Protein. 



Fat. 



Carbohy- 

 drate." 



Ash. 



Experiment No. 712, subject P. K.: 



Grams. 



1, 506. 

 319.0 

 492.0 

 197.0 



Grams. 



813.1 



28.7 



427.5 



Grams. 



27.7 



33.8 



3.9 



Grams. 



177.0 



4.8 



1.0 



Grams. 

 476.5 

 246.6 

 57.1 

 197.0 



Grams. 

 11.7 





5.1 



Fruit 



2.5 



















2,514.0 

 72.0 



1,269.3 



65.4 

 7.0 



58.4 



182.8 

 16.5 

 166.3 



977.2 



41.9 



935.3 



19.3 





6.6 







12.7 

















89.3 



91.0 



95.7 



65.8 











Experiment No. 713, subject J. C. M.: 



1,641.0 

 388.0 



1, 013. 

 149.0 



886.0 

 34.9 



880.3 



30.2 

 41.2 



8.1 



192.8 

 5.8 

 2.0 



519.2 

 299.9 

 117.5 

 149.0 



12.8 





6.2 



Fruit 



5.1 

















Total food consumed 



3,191.0 

 69.0 



1,801.2 



79.5 

 2.3 



77.2 



200.6 



9.7 



190.9 



1,085.6 



50.9 



1,034.7 



24.1 



Feces 



6.1 







18.0 











Per cent utilized 







97.1 



95.2 



95.3 



74.7 











