and of their Increase wJdlst Fatteiiiiuj. 
487 
2. The increase of liberally fed sheep, over 5 or 6 months of 
the final fattening period, will probably consist of 75 per cent, 
or more, of total dry substance ; of which, ()5 to 70 parts will 
be fat, 7 to 8 parts nitrogenous compounds, and about part 
mineral matter. 
3. The increase of pigs fed for fresh pork, over the 2 or 3 
final months on fattening food, will probably consist of G7^ to 72;^ 
per cent, total dry substance ; 60 to 65 per cent, fat, 6^^ to 
8 per cent, nitrogenous substance, and considerably less ^han 
1 per cent, mineral matter. The increase over the last few 
months of high feeding, of pigs fed for curing, will contain 
considerably higher percentages of fat and total dry substance, 
and lower ones of both nitrogenous compounds and mineral 
matter, than that of more moderately fattened animals. 
V. — Relation of Constituents in Increase to Consti- 
tuents CONSUMED. 
1. Sheep, fattening for the butcher on a good mixed diet, will 
seldom carry off more than 3 per cent, of the consumed mineral 
matter. The exact proportion will depend very much on the 
proportion of the mineral matter to the digestible organic con- 
stituents of the food. They will probably carry off less than 
5 per cent, of the consumed nitrogen, if the food be com- 
paratively rich, and more than 5 per cent, if it be compara- 
tively poor, in nitrogen. They should store up about 10 parts 
of fat for every 100 parts of non-nitrogenous substance con- 
sumed. 
2. Pigs, liberally fed on fattening food, will probably carry 
off from 6 to 10 per cent, of the consumed nitrogen. The pro- 
portion will be the less the richer the food, and the greater 
the poorer the food in nitrogen. They should store up about 
20 parts, or more, of fatj for every 100 parts of non-nitrogenous 
substance consumed. 
3. Sheep, fattening for the butcher on a good mixed diet, 
should give about 9 parts dry increase — consisting of about 8 
parts fat, 0*8 to 0*9 part nitrogenous substance, and about 0"2 
part mineral matter — for 100 parts total dry substance consumed. 
More than 90 parts of the consumed dry substance are, therefore, 
expired, perspired, or voided. 
4. Pigs, liberally fed on fattening food, should give 15 to 
18 parts of dry increase — consisting of 13 to 16 parts fat, Ih to 2 
parts nitrogenous substance, and less than 0'2 part mineral 
matter — for 100 parts total dry substance consumed. There will, 
therefore, be 82 to 85 parts of the consumed dry substance, ex- 
pired, perspired, or voided. 
