wenty-four male rats were divided randomly into the experimental and control groups

fedwith vitamin Adeficient diet and normal diet. respectively。 Total expetiment period was 80 days。The resulrs showed that subclinical Vitamin A deficiency had rarely influenced the growth anddevelopment of rats

but affected the hematopoietic function of the experimental rats as follows:1)Similar changes like lron- deficient anemia happened in hematological indexes and serumbiochemical parameters and 2) transferrin synthesis decreased in Vitamin A- deficient group

re-sulting in Iron accumulation in liver and spleen

reducing Iron transportation to the bOne mar-row

stimulating bone marrow proliferation。Based on our study

it is supported that Vitamin A is somewhat related with mechanism ofiron metabolism

When the response to treatment with iron alone is not satisfied

Vitamin AShould be added with the iron

and anemia would be greatly improved。