A comparison of UVb compact lamps in enabling cutaneous vitamin D synthesis in growing bearded dragons

J.J.E. Diehl, F.M. Baines, A.C. Heijboer, J.P. van Leeuwen, M. Kik, W.H. Hendriks, D.G.A.B. Oonincx*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)

Abstract

The effect of exposure to different UVb compact lamps on the vitamin D status of growing bearded dragons (Pogona vitticeps) was studied. Forty-two newly hatched bearded dragons (<24 h old) were allocated to six treatment groups (n = 7 per group). Five groups were exposed to different UVb compact lamps for two hours per day, with a control group not exposed to UVb radiation. At 120 days of age, blood samples were obtained and concentrations of 25(OH)D3, Ca, P and uric acid were determined. In addition, plasma 25(OH)D3 concentration was determined in free-living adult bearded dragons to provide a reference level. Only one treatment resulted in elevated levels of 25(OH)D3 compared to the control group (41.0 ± 12.85 vs. 2.0 ± 0.0 nmol/L). All UVb-exposed groups had low 25(OH)D3 plasma levels compared to earlier studies on captive bearded dragons as well as in comparison with the free-living adult bearded dragons (409 ± 56 nmol/L). Spectral analysis indicated that all treatment lamps emitted UVb wavelengths effective for some cutaneous vitamin D synthesis. None of these lamps, under this regime, appeared to have provided a sufficient UVb dose to enable synthesis of plasma 25(OH)D3 levels similar to those of free-living bearded dragons in their native habitat.

Original languageEnglish
Pages (from-to)308-316
JournalJournal of Animal Physiology and Animal Nutrition
Volume102
Issue number1
Early online date2017
DOIs
Publication statusPublished - 6 Jan 2018

Keywords

  • 25(OH)D
  • Lizard
  • Pogona vitticeps
  • Reptile
  • Ultraviolet light
  • Vitamin D
  • Vitamin D metabolites

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