What is in aloe vera? Aloe vera is not only a natural healer, it's also a growth enhancer in poultry. Hearing that, one might think, it's too good to be true. Essentially, the leaves of aloe vera are often for external uses only, they are not meant to be taken in. But with the study of Bejar and Colapo, it's now clear that it's safe for animal intake. Thus, it is important to know what's in the aloe vera that makes it both a natural healer and a growth promoter in chickens.Physically, the leaf of an aloe vera is composed of three layers. The first layer contains a clear gel, which is contained within the cells of the generous inner portion. Then there's the anthraquinones contained in the bitter yellow sap of the middle leaf layer and the fibrous outer part of the leaf that serves a pr...