Tapir (Tapirus) enteroliths

Zoo Biology
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Abstract

Enterolith fragments from two tapir species and horses were subjected to x-ray diffraction analysis. Tapir enteroliths were formed as layers of mineral deposited around a foreign nidus. The structure was similar to that of equine enteroliths except that tapir enteroliths lacked a central region of radially symmetrical coarse crystals. The enteroliths from tapirs were composed primarily of vivianite [Fe3(PO4)2 · 8H2O] and newberyite [MgH(PO4) · 3H2O], instead of the struvite [Mg(NH4)(PO4) · 6H2O] of enteroliths from horses. The reason for this difference is not known. Based on the chemistry of these mineral precipitates and information from other species, it was concluded that dietary manipulation to maximize carbohydrate fermentation and minimize protein fermentation in the large intestine may help prevent enterolithiasis in tapirs.

Suggested Citation

Murphy, M., Masters, J., Moore, D., Glass, H., Hughes, R., and Crissey, S., 1997, Tapir (Tapirus) enteroliths: Zoo Biology, v. 16, no. 5, p. 427-433, https://doi.org/10.1002/(SICI)1098-2361(1997)16:5<427::AID-ZOO5>3.0.CO;2-C.

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Publication type Article
Publication Subtype Journal Article
Title Tapir (Tapirus) enteroliths
Series title Zoo Biology
DOI 10.1002/(SICI)1098-2361(1997)16:5<427::AID-ZOO5>3.0.CO;2-C
Volume 16
Issue 5
Year Published 1997
Language English
Publisher Wiley
Description 7 p.
First page 427
Last page 433
Country United States
State Illinois, Minnesota
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