. Poultry production. Poultry. THE FEEDS 331 Hughes' has, however, shown tliat corn alone is an ade- quate diet for adult pigeons for maintenance for at least one year. The protein deficiency in corn seems to be due to the poor cjuahty rather than to the quantity, h'or corn which usually contains about 1) ])er cent protein will produce a very slight growth even when all the other necessary dietary factors are present in sufficient amounts. A diet containing this amount of protein in the form of milk albumen as shown l)y Osl)orne and Mendel- will ]jraduce a niaximimi growth. This protein defici
. Poultry production. Poultry. THE FEEDS 331 Hughes' has, however, shown tliat corn alone is an ade- quate diet for adult pigeons for maintenance for at least one year. The protein deficiency in corn seems to be due to the poor cjuahty rather than to the quantity, h'or corn which usually contains about 1) ])er cent protein will produce a very slight growth even when all the other necessary dietary factors are present in sufficient amounts. A diet containing this amount of protein in the form of milk albumen as shown l)y Osl)orne and Mendel- will ]jraduce a niaximimi growth. This protein deficiency in corn is imdoubtedly due to the high per cent of zein, a ]:)rotein which contains neither lysin nor tryptophan, and which is incapable of supporting life. Fig. 1. White Leghorn coekerel at eight months' of age which liad Ijeen fed only corn and salt mixture. (After Hutihes.) Corn is the best liked grain that is fed to poultry in the Middle West. Yellow corn imparts a deeper color to the yolk of eggs than wheat or oats and produces yellow flesh as a fattening ration. It carries more of fat soluble A than the white corn. It also tends to make \\hite birds creann* in color. ^ ]vansas Technical Bulletin, No. .^. ^ Journal of Biological Chemistry, yol. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lippincott, William Adams, 1882-1931; Card, Leslie Ellsworth, 1893-. Philadelphia, Lea & Febiger
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpoultry, bookyear1921
