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Article Abstract
Amazona aestiva, a member of the Psittacidae family, belongs to the genus Amazona. These animals are endowed with adaptations in their digestive systems that allow a natural diet composed of seeds and fruits, with anatomical characteristics that facilitate the acquisition and use of nutrients from these food groups. Although it is an important species, no previous information is available regarding the histology and histochemistry of its digestive tract. This study aimed to describe the morphological and histochemical characteristics of the digestive tract of this species. Fragments of the tongue, oesophagus, crop, proventriculus, ventriculus, small intestine, large intestine, liver and pancreas were collected from seven specimens without any clinical alterations in the digestive tract. A. aestiva's digestive tract observed the presence of an extremely developed tongue, a proventriculus with more delicate walls and a ventricle with less-developed musculature. Here, we present a detailed morphological and histochemical description of the Turquoise-fronted Parrot's digestive tract.
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