361.

Kratzer FH, Starcher B. Quantitative relation of EDTA to availability of zinc for turkey poults. Proc. Soc. Exp. Biol. Med. 1963; 113:424-426. (NA34) [Broad Breasted Bronze turkey poults were given ethylenediamine tetra-acetic acid (EDTA) and Zn as supplements to a Zn-deficient diet containing isolated soya bean protein. On the basal diet alone growth was poor and there was mild perosis. Growth improved with additions of Zn in proportion to the amount added up to 30 mg per kg diet. Perosis increased as Zn was increased to between 15 and 30 mg per kg and then decreased as more was added. Growth increased linearly as EDTA increased both with the basal diet alone and with 7 to 10 mg Zn added per kg. About 100 mg EDTA per kg were equivalent to 8 mg added Zn in the diet and that equivalent activity was constant over the range of 50 to 300 mg EDTA. When added to the diet supplemented with Zn, 100 mg EDTA were equivalent to abut 19 mg Zn. It is suggested that EDTA not only increases the availability of Zn already present, but also improves availability of what is added.]

Gordon Research Institute / Reference Material

Gordon Research Institute    Dr. Garry F. Gordon MD DO MD(H)
600 N Beeline Hwy, Suite B, Payson, AZ 85541
Phone: 928-472-4263    Fax: 928-474-3819
Email Dr.Gordon