Effects of ultraviolet radiation on 25-hydroxyvitamin D3 synthesis in red-eared slider turtles (Trachemys scripta elegans)

Mark J. Acierno, Mark A. Mitchell, Marlana K. Roundtree, Trevor T. Zachariah

Research output: Contribution to journalArticlepeer-review

Abstract

Objective - To determine whether there are increased concentrations of 25-hydroxyvitaminn D3 in red-eared slider turtles (Trachemys scripta elegans) after exposure to UV radiation. Animals - 12 yearling turtles recently removed from aestivation. Procedures - Turtles were randomly allocated to 2 groups (6 turtles/ group). An initial blood sample was collected from all turtles for measurement of 25-hydroxyvitamin D3 concentrations. Turtles of 1 group were then provided no supplemental lighting, whereas turtles of the other group were exposed to full-spectrum coil bulbs at a distance of 22.86 cm. The UV-A and UV-B radiation generated by the supplemental lighting was measured by use of a radiometer-photometer at weekly intervals. Measurements were collected 2.54 and 22.86 cm from the bulb surface. The study was continued for a 4-week period. At the end of the study, a second blood sample was collected from all turtles for measurement of 25-hydroxyvitamin D3. Results - Mean ± SD 25-hydroxyvitamin D3 concentrations differed significantly between turtles provided supplemental UV radiation (71.7 ± 46.9 nmol/L) and those not provided UV radiation (31.4 ± 13.2 nmol/L). Conclusions and Clinical Relevance - Appropriate husbandry recommendations for raising and maintaining red-eared slider turtles should include use of sunlight that is unobstructed by UV-B filtering material or provision of an artificial source of UV-B radiation.

Original languageEnglish (US)
Pages (from-to)2046-2049
Number of pages4
JournalAmerican journal of veterinary research
Volume67
Issue number12
DOIs
StatePublished - Dec 2006
Externally publishedYes

ASJC Scopus subject areas

  • General Veterinary

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