64 NUTRITION OF FARM ANIMALS 



It appears from the foregoing figures that the most abundant 

 single constituent, although one which is subject to marked 

 variations, is water, its percentage ranging from over 80 in 

 very young pigs to 37 in a very fat sheep. Only in this latter 

 case and two others does the percentage of water fall below 

 that of fat. Relatively, the greatest variations are in the fat, 

 as would be expected, since fat is the reserve material of the 



TABLE 18. COMPOSITION OF FAT-FREE BODY EMPTY WEIGHT 



