Reptile nutrition — UVB-dependent vitamin D3 synthesis and calcium regulation
Source: Merck Veterinary Manual (merckvetmanual.com), a copyrighted veterinary reference. Per COPYRIGHT_POLICY §3, the points below are paraphrased derived fact summaries: numerical values and proper nouns are preserved from the source, but sentences are rewritten and not quoted verbatim.
Claims
- *[Paraphrased derived summary — non-Open-Access source.]* For most active (diurnal) lizards and turtles, UVB light is needed to make vitamin D3, which controls calcium balance.
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License & attribution
Source paraphrased: Merck Veterinary Manual — Reptile care (merckvetmanual.com). Original text © Merck Veterinary Manual; not openly licensed. Per COPYRIGHT_POLICY §3 this topic presents derived fact summaries only, not verbatim quotation.