The Vitamin A Reserve of Diseased Fowls

Abstract THE relationship of vitamin A deficiency to infectious diseases in the fowl has been given attention during recent years. Elvehjem and Neu (1932) studied symptoms associated with vitamin A deficiency in the chick and also reported early work by other investigators. Seifried (1933) found vitamin A deficiency in poultry was followed by a high incidence of infestation with internal parasites. Murphy, Hunter, and Knandel (1938) reported that cod liver oil added to the ration of pullets apparently increased their resistance to coccidiosis. Chichester, Russell, and Hudson (1938), in an extensive study of the livers from diseased birds autopsied over a period of two years, found no significant grouping of diseases according to the amounts of vitamin A found in the livers. In a recent study Rubin, Bird, and DeVolt (1941) investigated vitamin A deficiency in commercial poultry flocks by assaying 80 livers for their vitamin A content and concluded that . . .

[1]  H. R. Bird,et al.  Avitaminosis A in Commercial Poultry Flocks , 1941 .

[2]  A. Holmes,et al.  Correlation of Egg Production with Vitamin A, Ascorbic Acid, Mineral Reserves and Body Weight of Laying Hens , 1940 .

[3]  R. C. Holder,et al.  The Stability of Vitamin A from Cod Liver Oil in Mixed Feeds , 1939 .

[4]  O. H. Wilder,et al.  The stability of carotene and vitamin A in a mixed ration. , 1939 .

[5]  A. Ringrose,et al.  The Stability of Vitamins A and D in Mixed Feed Ingredients Part II—Vitamin A , 1939 .

[6]  W. C. Russell,et al.  Mortality in Poultry Flocks and the Vitamin A Content of the Livers of Pullets and Hens , 1938 .

[7]  H. Knandel,et al.  The Effects of Rations Containing Gradient Amounts of Cod Liver Oil on the Subsequent Performance of Laying Pullets Following a Natural Infection of Coccidiosis , 1938 .

[8]  W. C. Russell,et al.  The stability of carotene in plant tissues. , 1938 .

[9]  A. Holmes,et al.  The Influence of Fat-Soluble Vitamins on Egg Production and Egg Shell Composition , 1937 .

[10]  G. S. Fraps,et al.  Losses of vitamin A and carotene from feeds during storage. , 1937 .

[11]  A. Holmes,et al.  Vitamin A storage by chickens. , 1936 .

[12]  C. Elvehjem,et al.  Studies in vitamin A avitaminosis in the chick. , 1932 .

[13]  W. J. Dann.  The transmission of vitamin A from parents to young in mammals. , 1932, The Biochemical journal.

[14]  T. Moore.  Vitamin A and carotene: The absence of the liver oil vitamin A from carotene. VI. The conversion of carotene to vitamin A in vivo. , 1930, The Biochemical journal.

[15]  T. Moore.  Vitamin A and carotene: The association of vitamin A activity with carotene in the carrot root. , 1929, The Biochemical journal.

[16]  H. Sherman,et al.  QUANTITATIVE EXPERIMENTS UPON THE OCCURRENCE AND DISTRIBUTION OF VITAMIN A IN THE BODY, AND THE INFLUENCE OF THE FOOD , 1925 .