1) PARDUE, S.L. and J.P. THAXTON (1986) Ascorbic acid in poultry: A review, World's Poult. Sci. J., 42: 107-123.
2) NATHAN, D.B., E.D. HELLER and M. PEREK (1976) The effect of short heat stress upon leucocyte count, plasma corticosterone level, plasma and leucocyte ascorbic acid content, Br. Poult. Sci., 17: 481-485.
3) PARDUE, S.L. and J.P. THAXTON (1982) Enhanced livability and improved immunological responsiveness in ascorbic acid supplemented cockerels during acute heat stress, Poult. Sci., 61: 1522 (Abstr.)
4) THORNTON, P.A. (1961) Increased environmental temperature influences on ascorbic acid activity in the domestic fowl, Fed. Proc., 20: 158.
5) THORNTON, P.A. and S.S. DEEB (1961) The influence of thyroid regulators on blood ascorbic acid levels in the chicken, Poult. Sci., 40: 1063-1067.