Crested gecko diet is a complete meal replacement powder. It contains protein and all the vits and minerals your gecko needs. It was developed by everyone's favorite crested breeder. It was developed to be the only thing you feed your gecko, but many people use it as a suppliment to baby food. The basic idea is, if you don't want to deal with crickets and fruit, the gecko can do just fine on CGD alone. I also believe CGD is cheaper overall, but only lasts 6 months open.
My personal experience is that our first crested loved to eat crickets too much when she was younger, so we'd offer her dusted crickets and a small bowl of fruit mixed with CGD. As she got older, she enjoys eating the CGD straight (well, mixed with water as per the directions) and has gone to eating less and less crickets. Makes sense as she no longer is growing as much. Using this method our gecko grew very well and is quite chubby at 5 months. We are just switching over to feeding crickets less often and having fresh CGD avail. For treats she gets a scoop of organic baby food of one of her favorite flavors every once in a while.
I have no idea why a breeder wouldn't recommend CGD, especially if you are willing to also feed some crickets when the gecko is young and growing. IMHO that is the best way to go. Good luck, hope this helps.
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0.1 Albino Leo Gecko
0.0.1 Crested Gecko
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