References
- Daghir , N. J. and Balloun , S. L. 1963 . Evaluation of the effect of breed on vitamin B6 requirements of chicks . J. Nutr. , 79 : 279 – 288 .
- Supplee , W. C. 1966 . Feather abnormality in poults fed a diet deficient in vitamin E and selenium . Poult. Sci. , 45 : 852 – 854 .