J. Appl. Poult. Res.
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J APPL POULT RES 2003. 12:417-423
© 2003 Poultry Science Association
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Research Reports

Relative Bioavailability of Novel Amino Acid Chelates of Manganese and Copper for Chicks

R. D. Miles, P. R. Henry, V. C. Sampath, M. Shivazad and C. W. Comer

Department of Animal Sciences, P. O. Box 110920, University of Florida, Gainesville, Florida 32611-0920

Correspondence: R. D. Miles, E-mail: miles{at}animal.ufl.edu

Two experiments were conducted to estimate the relative bioavailability of two new organic chelates of Mn or Cu compared with either reagent-grade Mn sulfate monohydrate or reagentgrade Cu sulfate pentahydrate as the standards in chicks fed for 21 d. Based on either bone Mn concentration, regressed on added dietary Mn concentration, or log10 liver Cu concentration, regressed on non-zero added dietary Cu intake, and assuming a value of 100% for either reagentgrade standard, relative bioavailability values were 84 ± 3.5 and 96 ± 14%, for the Mn and Cu chelates, respectively.

Key Words: manganese • copper • bioavailability • chick • chelate






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