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

作者：Diehl J J E; Baines F M; Heijboer A C; van Leeuwen J P; Kik M; Hendriks W H; Oonincx D G A B^*

来源：Journal of Animal Physiology and Animal Nutrition, 2018, 102(1): 308-316.

DOI：10.1111/jpn.12728

• 25(OH)D-3
• lizard
• Pogona vitticeps
• reptile
• ultraviolet light
• vitamin D
• vitamin D metabolites

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)D-3, Ca, P and uric acid were determined. In addition, plasma 25(OH)D-3 concentration was determined in free-living adult bearded dragons to provide a reference level. Only one treatment resulted in elevated levels of 25(OH)D-3 compared to the control group (41.0 +/- 12.85 vs. 2.0 +/- 0.0 nmol/L). All UVb-exposed groups had low 25(OH)D-3 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)D-3 levels similar to those of free-living bearded dragons in their native habitat.

• 出版日期2018-2