Abstract
The level of “total” ascorbic acid (ascorbate+dehydroascorbate) has been measured in the mucoid layer of combs from normal roosters, capons and capons treated with testosterone. The “total” ascorbate level in capon comb was lower than the value obtained from combs from normal roosters. This value returned towards normal in combs from capons treated with testosterone. The specific activity of L-gulonate-NADP + oxidoreductase, an enzyme in the pathway of ascorbate biosynthesis, also was measured. The specific activity levels followed a pattern similar to the ascorbate levels in the three types of combs utilized. The results are consistent with the possible role of L-ascorbic acid as a cofactor in the synthesis of collagen, a process which also appears to be dependent on the level of testosterone in the comb mucoid layer.
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