sure you dont HAVE to gutload with a bran it was just a suggestion which is why i put you COULD.
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Good Wet Gutloading Ingredients: dandelion leaves, collard greens, mustard greens, turnip greens, escarole lettuce, butternut squash, carrots, mango, alfalfa sprouts, oranges, blueberries, raspberries, sweet potato, strawberries, hibiscus leaves and flowers, papaya
Good Dry Gutload Ingredients: bee pollen, alfalfa powder, kelp powder, brewer’s yeast, wheat germ, raw uncooked sunflower seeds, raw uncooked pumpkin seeds, hemp seeds, small amounts of whole grain cereals, spirulina algae, tortoise pellets
Foods to AVOID: Broccoli, spinach, beets, and parsley, have large amounts of oxalic acids which bind calcium absorption. Lettuces and cabbage do not have any significant nutritional value. Also, avoid things like dog food, cat food, and fish flakes which are high in animal proteins which can cause kidney damage. Feeding such things like pinky-mice, fuzzies, and feeder anoles that are extremely high in fat and protein content is harmful to your chameleon's health, bones and organs that can lead to serious illnesses like gout, edema, organ failure and fatality.
below is a great site that has nutritional info on many available fruits and veg
http://www.greenigsociety.org/foodchart.htm
Sandrachameleon has more blog entries on gut loading also