引用:
原帖由 belugatort 於 2007-2-6 07:00 發表
Please check out this article on Reptiles Magazine. The author, Richard Fife http://www.ivorytortoise.com , is a very experienced tortoise breeder. He uses humidity chamber to keep his sulcata ...
他的文章一直用 " The researchers also hypothesized “that during dry conditions,
dehydration reduces both intra- and inter-cellular pressures on soft cartilage at the areas of bone growth, which could lead to collapse of the soft tissue and subsequent ossification in the collapsed position.” 來解釋，這是說不過去的；
Dehydration可用飲水提高食物含水量或泡澡來解決，low humidity of environment 跟dehydration根本不是同義辭，環境濕度高就不會脫水嗎？
因此我比較可以同意
http://www.chelonia.org/Articles/whatcausespyramiding.htm 裡面的說法
用Hydration status而不是用humidity來解釋！
這裡面提到Hydration status has also been suggested as another important cofactor. This is an interesting subject in itself. There have been studies subjecting tortoises to high protein diets while also providing very high hydration states. The jury is out on kidney and liver functions and time will tell on those, but externally there have been cases of very rapid growth with high protein while achieving smooth shells at the same time. The thought is that the very high water throughput is flushing the system sufficiently to avoid pyramiding. As a result of this it is suggested to provide high humidity hide boxes even in arid habitats.
隆背基本上是代謝性骨病的一種，如果脫水讓肝腎受損進而影響內分泌(vit. D3)的合成，讓鈣磷對骨骼的生長造成影響，這是說的過去的！
當然，有討論就有進步，Richard Fife 文章標題用疑問句 " Is Humidity the Key? "做開頭，我想他也是想要有更多的理論或證據來支持他的觀察吧！
