Influence of Arsanilic Acid on Dietary Requirement of Chicks for Certain Unidentified Growth Factors

Abstract

The results of two experiments show that orally administered arsanilic acid increased the dietary requirement of chicks for the unidentified growth factor present in fish products and dried whey. The growth response of chicks to these unidentified factors was significantly greater in the presence of arsanilic acid. Arsanilic acid supplementation also has been shown to increase significantly the growth rate of chicks fed complete practical type rations containing an antibiotic and sources of unidentified growth factors. No growth response was obtained from arsanilic acid supplementation when the rations contained no additional source of these unidentified factors.