HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Kornegay, E. T. Search for Related Content PubMed PubMed Citation Articles by Kornegay, E. T.

Availability of Iron Contained in Defluorinated Phosphate

Virginia Polytechnic Institute and State University, Blacksburg, Viginia 24061

Abstract

Seventy-six crossbred pigs which had not received iron-dextran by injection were weaned at 3 weeks of age and were used to evaluate the relative availability of iron contained in defluorinated phosphate as compared with iron contained in ferrous sulfate. Graded levels of iron supplied by ferrous sulfate and by defluorinated phosphate were added to a semi-purified low iron (20 ppm) diet. The relative availability of iron supplied by defluorinated phosphate as compared with iron supplied by ferrous sulfate was 81 and 85% for body weight gains, 35 and 73% for maintenance of hemoglobin and 50 and 67% for maintenance of hematocrit, respectively, for trials 1 and 2. Iron supplied by defluorinated phosphate, though not as available as iron supplied by ferrous sulfate, was found to be adequate to maintain a growth rate equal to that of iron in ferrous sulfate when added so that a total iron level of 78 to 125 ppm was obtained. Hemoglobin and hematocrit levels were maintained well above the anemic range when defluorinated phosphate was added so that the total dietary iron level was 103 to 125 ppm.

¹ The author wishes to acknowledge the assistance of F. W. Sandrock, Norma Anderson, Jimmy Smith, Steven Palmer, Don Horsley and Dr. C. Y. Kramer of V.P.I, and S.U. and D. B. Underhill and Dr. W. J. Monson of Borden, Inc., in conducting trials and analytical analyses. Appreciation is expressed to Borden, Inc., Norfolk, Va.; Merck Inc., Rahway, N. J.; and Diamond Shamrock Chemical Co., Harrison, N. J. for diet ingredients.

² Department of Animal Science.

³ Borden CDP defluorinated phosphate, feed grade containing 18% P, 31–34% Ca and less than 0.18% F. Supplied by Smith-Douglass, Division of Borden, Inc., Norfolk, Va. 23501.

This article has been cited by other articles:

				B. L. Creech, J. W. Spears, W. L. Flowers, G. M. Hill, K. E. Lloyd, T. A. Armstrong, and T. E. Engle Effect of dietary trace mineral concentration and source (inorganic vs. chelated) on performance, mineral status, and fecal mineral excretion in pigs from weaning through finishing J Anim Sci, July 1, 2004; 82(7): 2140 - 2147. [Abstract] [Full Text] [PDF]