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April 11, 1931

Growth and Development with Special Reference to Domestic Animals. XV: Energy and Nitrogen Metabolism During the First Year of Postnatal Life. University of Missouri, College of Agriculture, Agricultural Experiment Station, Research Bulletin 143.

JAMA. 1931;96(15):1256. doi:10.1001/jama.1931.02720410066045

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This volume is one of a series of reports on investigations carried out by the Missouri Agricultural Experiment Station. Numerical data are presented on the energy metabolism of farm animals (dairy cattle, beef cattle, horses, sheep and swine) during the first year of postnatal life. Some data are also presented for chickens and rats. The bulk of the data was obtained on normally fed animals about twelve hours after feeding; but some of the measurements were made on low-fed, high-fed and fasting animals. Some data, in graphic form only, are presented for the elimination of urinary nitrogen in its several forms (total, urea plus ammonia, creatine and creatinine) in dairy calves. The age changes in consumption of feed (hay, grain, milk, dry matter, crude protein, net energy) are given for the dairy calves, as also their age changes in linear size. Similar data are presented for the colts. Tentative interpretations

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