Abstract
Summary
Chicks fed diets partially deficient in either Vit. A, pantothenic acid or riboflavin showed significantly lower agglutinin response to S. pullorum antigen as compared with controls. The weight of bursa, in relation to body weight, was less in chicks fed the vitamin-low diets, being significantly lower than that of controls only for the chicks fed the vitamin A-low diet. No significant differences were observed in thymus, spleen or adrenal weights. The results indicated that the dietary need for these nutrients is appreciably greater for optimum antibody production than the levels required for rapid growth.
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