. Department bulletin. Agriculture; Agriculture. Washington, D. C. PROFESSIONAL PAPER February 10, 1923 VITAMIN B IN THE EDIBLE TISSUES OF THE OX, SHEEP, AND HOG. I. VITAMIN B IN THE VOLUNTARY MUSCLE. II. VITAMIN B IN THE EDIBLE VISCERA. By Ralph Hoagland, Senior Biochemist, Biochemic Division, Bureau of Animal Industry. CONTENTS. Page. Vitamin B in the diet 1 I. Vitamin B in the voluntary muscle 2 Importance of meat as a food 2 Previous investigations with meat 2 Experimental work 4 Discussion of results 19 Summary of Part 1 20 Page. II. Vitamin B in the edible viscera 21 Importance of edible
. Department bulletin. Agriculture; Agriculture. Washington, D. C. PROFESSIONAL PAPER February 10, 1923 VITAMIN B IN THE EDIBLE TISSUES OF THE OX, SHEEP, AND HOG. I. VITAMIN B IN THE VOLUNTARY MUSCLE. II. VITAMIN B IN THE EDIBLE VISCERA. By Ralph Hoagland, Senior Biochemist, Biochemic Division, Bureau of Animal Industry. CONTENTS. Page. Vitamin B in the diet 1 I. Vitamin B in the voluntary muscle 2 Importance of meat as a food 2 Previous investigations with meat 2 Experimental work 4 Discussion of results 19 Summary of Part 1 20 Page. II. Vitamin B in the edible viscera 21 Importance of edible viscera as food 21 Previous investigations with edible viscera 23 Experimental work 23 Summary of Part II 4-1 Conclusions 46 References to literature 46 VITAMIN B IN THE DIET. Vitamin B, also known as the antineuritic vitamin, is one of those chemically unidentified substances which are absolutely neces- sary for the growth and maintenance of man and animals. The disease known as beriberi, formerly rather common among the rice-eating people of the East, is due to the consumption of a diet made up very largely of polished rice, which is very deficient in this vitamin. On the other hand, natives who subsist largely on the unpolished cereal do not contract beriberi, and the disease may be cured simply by substituting unpolished for polished rice in the diet. A less-marked deficiency of vitamin B in the diet results in retarded growth and other disorders. Birds fed a diet very deficient in vitamin B lose weight rapidly and develop polyneutritis, while young rats make but slight, n any, growth on such a diet. Since the chemical identity of vitamin B or of any of the other vitamins is not known, the only reliable method for the estimation of the vitamin content of a foodstuff is by animal experimentation. This method has its limitations, but when feeding tests are carried on with the greatest care and the results are interpreted with caution, fairly accurate, relative vitamin values
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