Also, mealworms are way too high in Phosphorus which robs the dragon of calcium and makes them prone to MDB. A few every week won't do this, but if they are a big part of the diet they will cause problems over time. The only way to get the correct cal
hos (Ca
) ration with mealies is to inject them with calcium before feeding. This would be very time consuming!
Meal worms are also way too high in fat to be a major staple. Again a few a week won't hurt, but if eaten regularly there are several conditions that will arise.
Neither of these things will cause immediate problems, their effects are cumulative.
Last, around 50% (a little under) of a mealworm is NOT digestable or usable. It still takes up space though. If you feed mealworms they cause the animal to get full after ingesting a LOT less nutrients then either crickets or silkworms. Every part of a silkworm digests and can be used, much of the cricket is digestable (75% of adults crix, 95% of prewing and younger is digestable).
By digestable (for anyone intrested) I mean is able to be digested in the average time it takes food to pass through the digestive system. Many things CAN be digested if left for days, weeks, years in the stomach, but beardies have a pretty quick "turn over" time.
And then there is impaction.... but even before you consider this immediate and therefore more scary (its usually the only drawback anyone mentions to mealies) condition that can occur, mealies just don't make a good staple food nutritionally.
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