Dude, Cheri's not gonna back down from this, and I've seen it first hand.
We got 8 dragons in at the beginning of July as rescues. 4 of them (Group 1) came from a very knowledgable breeder, who gave excellent supplements, and used inadequate UVB. The other 4 (Group 2) came from somebody I knew who'd raise them since hatchlings, again with good supplementation and no UVB.
Group 1 were all clutchmates to each other, and when they arrived, on June 29th, they weighed & measured...
Dragon 1 : 1g 5"
Dragon 2 : 5g 7"
Dragon 3 : 15g 8 1/4"
Dragon 4 : 25g 9 1/2"
At the time we received these dragons, all four of these dragons were 9-10 months old.
The ONLY change we made to their care was to prodive them with Mercury Vapour bulbs.
Less than 2 weeks later, on July 11th..
Dragon 1 : 11g 6"
Dragon 2 : 14g 7 1/2"
Dragon 3 : 28g 9"
Dragon 4 : 50g 10"
As I said, the ONLY change in their husbandry was to provide them with lots of UVB from Mercury Vapour bulbs (160 Watt Powersuns to be precise).
At this point, Dragon 2 was sent to a new home where he has continued to grow & thrive under plenty of UVB.
By August 8th...
Dragon 1 : 17g 7"
Dragon 4 : 34g 9 12"
Dragon 3 : 90g 11 1/2"
And this is only in a 6 week period starting at 9-10 months of age. This is a hell of a growth spurt and DEFINITELY shows proof that UVB is essential to the health of these animals.
Now, let's take a look at Group 2..
Dragon 5 : 22g, 9 1/2", 11 Months old
Dragon 6 : 34g, 11", 11 Months old
Dragon 7 : 150g, 17", 2 Years old
Dragon 8 : 170g, 14", 2 Years old
Dragons 5 & 6 were siblings, and dragons 7 & 8 appear to be unrelated adults. The two 2 year olds, both showed signs of MBD, and all four of these dragons were supplemented regularly.
Thee 4 dragons arrived to us on July 1st.
Only 10 days later, on July 11th...
Dragon 5 : 47g, 10"
Dragon 6 : 52g, 11"
Dragon 7 : 200g, 17"
Dragon 8 : 235, 14.5"
Dragon 5 went off to a new home at the same time as Dragon 2 from the first group. She has now reached over 300g, and is over 17" long.
Dragon 6 is still with us, currently weighs 289g and is 16" long.
ALL 8 dragons showed significant increase in colour, & activity and their appetite DRAMATICALLY improved almost immediately, when the ONLY change made to their husbandry was to provide UVB in the form of mercury vapour bulbs.
ALL of these dragons were far beyond the age they should be for their sizes, and good care was given by knowledgable keepers. Again, the ONLY difference between their care with us, and that with their previous keepers, was that we offered them lots of UVB lighting.
You say you experience "normal" growth rates with no UVB, and just supplementation, but what do you define as "normal"? Do you have these growth charts available anywhere so we can see them?
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Axe
The Reptile Rooms