METABOLISM OF CAROTENOIDS AND VITAMINS A 559 



Table 5 



The Carotene Content of Cow's Milk 

 AS Influenced by Season" 



Carotenes in /ig./lOO ml. 



Breed 



Mixed 



Jersey 



Guernsey 



Hariana and Sahiwal 10.8 43.7 k 



" Adapted from T. W. Goodwin, The Comparative Biochemistry of the Carotenoids, 

 Chemical Publ. Co., Inc. New York, 1954, p. 242. 



'' J. C. H. van Wijngaarden, Nederland Tijdschr. Geneesk., 75, 26G8-2671 (1934). 



<= M. Deco, Comvt. rend. soc. bioL, ISO, 817-818 (1939). 



•^ A. Francois, Lait, 26, 97-116 (1946). 



« A. Lund, Beretn. Forsdgslab. Kobenh, No. 218, p. 115 (1945); cited by T. W. Good- 

 win, Carotenoids, p. 242. 



/ K. Skurnik and M. Hellen, Z. Vitaminforsch., 15, 52-68 (1944). 



" F. Amaral Rogick and L. Amaral Rogick, Bol. indust. animal {Sao Paulo), 8, No. 

 3-17 (1946); Chem. Abst., 42, 3873 (1948). 



^ P. F. Sharp and D. B. Hand, /. Dairy Sc.i., 22, 737-741 (1939). 



'■ T. S. Sutton and W. E. Krauss, Bull. Ohio Agric. Expt. Sta., No. 548 (53rd Ann. 

 Rept.), 59 (1935); Chem. Abst., SO, 1449 (1936). 



' P. D. Bover, K. Spitzer, C. Jensen, and P. H. Phillips, Ind. Eng. Chem., Anal. Ed., 

 16, 101-102 (1944). 



" B. C. R. Sarkar, /. Dairy Sci., SI, 479-487 (1948). 



colostrum and milk were reported to contain essentially no carotene. 

 Braude et oi.**®'^^'' and Bowland and co-workers^^^'^^^ reported similar values 

 for the vitamin A content of sow's colostrum (247 I.U./IOO ml.) and milk. 



c. Seasonal Variations in the Carotenoid and Vitamin A Content of 

 Milk. Season has a pronounced effect upon the carotenoid and vitamin A 



88« R. Braude, S. K. Kon, and S. Y. Thompson, ,/. Dairy Research, 14, 414-418 

 (1946). 



8" R. Braude, M. E. Coates, K. M. Henry, S. K. Kon, S. J. Rowland, S. Y. Thompson, 

 and D. M. Walker, Brit. J. Nutrition, 1, 64-77 (1947). 



888 J. p. Bowland, R. H. Grummer, P. H. Phillips, and G. Bohstedt, /. Dairy Sci., 32, 

 22-28 (1949). 



889 J. P. Bowland, R. H. Grummer, P. H. Phillips, and G. Bohstedt, /. Animal Sci., 8, 

 98-106 (1949). 



