Redstrike said:I'm not picking a fight but Redfoot tortoises require UVB for vitamin D3 production. What we see in captivity and what they may do in the wild are separate observations. Even if they aren't basking in noon sunlight, they are outside and exposed to low levels of UVB that may be adequate enough for D3 synthesis. I can't get over how this remains non-axiomatic to all keepers.
Bottom line, UVB found in sunlight cannot be fully replicated via bulbs and is therefore an inadequate replacement for the sun. Further, I won't rely upon diet to provide enough vitamin D3 to maintain adequate calcium absorption in my animals. If you get your redfoots outside for half the year, you're probably fine as D3 is fat soluble and stored for use all winter while your tort resides in its enclosure. I choose to use a low-level flat tube UVB (Zoo Med Reptisun 10.0) in the winter even though I have my tortoises outside almost daily for 6 months out of the year.
Marine, I would recomend placing a UVB light in the enclosure. The long tube florescents are good as are Mercury Vapor Bulbs specifically designed for reptiles (they give off poor CRI's, so only use this as a basking location and not for UVA). You're going to hear lots of conflicting dogma here, but your animals need UVB wavelengths. Period.
I will also add that tortoise doesn't look awful and may be a bit mis-shapen from being in the egg or just growing a bit funky (mine do this occassionally). Error on the side of caution and ensure you have plenty of UVB & Ca supplementation (2-3 times/week, too much of anything isn't good).
pfara said:Quick questions. If torts hide for most of the day while young, how is it possible to fulfill their uvb requirements? How serious are the dips in the shell, like in the OP's picture and will it continue to keep that shape as they grow? Also, like Terry mentioned, we can't force them to bask so what can you do to prevent further mbd? Sorry if I hijacked a bit.