The following article was taken from:
Poultry: A Practical Guide to the Choice, Breeding, Rearing, and Management of all Descriptions of Fowls, Turkeys, Guinea-fowls, Ducks, and Geese, for Profit and Exhibition.
Author: Hugh Piper
Publication Date: 1872
Keep only good, healthy, vigorous, well-bred fowls, whether you keep them to produce eggs or chickens, or both. The ill-bred mongrel fowls which are so commonly kept, are the most voracious, and consume larger quantities of food, without turning it to any account; while well-bred fowls eat less, and quickly convert that into fat, flesh, and eggs.
“Large, well-bred fowls,” says Mr. Edwards, “do not consume more food than ravenous, mongrel breeds. It is the same with fowls as with other stock. I have at this moment two store pigs, one highly bred, the other a rough, ill-bred animal. They have, since they left their mothers, been fed together and upon the same food. The former, I am confident (from observation), ate considerably less than the latter, which was particularly ravenous. The former pig, however, is in excellent condition, kind, and in a measure fat; whereas the latter looks hard, starved, and thin, and I am sure she will require one-third more food to make bacon of.”