The below was performed before the Phelsuma diet came out.
GiantDayGecko.com participated in a 4 month feeding trial for Repashy Meal Replacement Powder (Gecko MRP, Version 3.0)
The study consisted of 6 groups, each containing 5 giant day geckos, Phelsuma grandis.
Group 1: Repashy diet
Group 2: Guava Gerber babyfood*
Group 3: Crickets*
Group 4: Repashy diet and Guava Gerber babyfood*
Group 5: Repashy diet and Crickets*
Group 6: Crickets* and Guava Gerber babyfood*
Group 7: Crickets* and Repashy diet mixed with Guava Gerber babyfood*
*with Rep-Cal calcium ultrafine powder plus vitamin D3.
A scientific paper entitled:
"Evaluation of a meal replacement powder fed to giant day geckos (Phelsuma grandis)",
is under review by the Bulletin of the Journal of Herpetogical Medicine and Surgery. Look out for it!
Some interesting findings included:
1) Geckos readibly consumed the Repashy diet after a variable acclimization period.
2) Hatchlings were slower to accept the Repashy diet than sub adults and adults.
3) Some geckos experienced feeding burnout and had to be supplemented with novel food items.
4) Geckos from Group 1, 2, and 4 experience significantly decreased growth rate.
5) In terms of growth and general health Group 7 performed the best.
6) Repashy Meal Replacement Powder (Gecko MRP, version 3.0) will benefit the growth and general health of captive giant day geckos and is recommended as an important component of their diet.
http://giantdaygecko.com/id80.html