Anatomopathological changes, quantification and distribution of Libyostrongylus spp. in regions of the proventriculus and ventriculus of naturally and experimentally infected ostriches.

Anatomopathological changes, quantification and distribution of Libyostrongylus spp. in regions of the proventriculus and ventriculus of naturally and experimentally infected ostriches. Avian Pathol. 2019 Apr 12;:1-25 Authors: de Souza LP, de Andrade JG, Medina RM, de Carvalho ECQ, Glória LS, DaMatta RA, de Paula Santos C Abstract Nematodes of the genus Libyostrongylus parasitize ostriches, causing high mortality rates. These nematodes are found in the proventriculus and ventriculus of ostriches, but little is known about their distribution and the possible anatomopathological changes they cause in the various regions of these organs. This paper describes the distribution and quantification of Libyostrongylus and pathological changes found in regions of the proventriculus and ventriculus of ostriches with high and low levels of both natural and experimental infection. Ostriches were necropsied and tissue samples from the distinct regions of both organs were analyzed based on nematode counts and histopathology after staining with hematoxylin and eosin, Masson's trichrome or Alcian blue/PAS. The cranial and glandular regions of the proventriculus were the most parasitized. The ventriculus contained more nematodes in the caudal region. No macro- or microscopic pathological changes were observed in either one of these organs of experimentally infected birds. However, naturally infected birds with high levels of infection presented proventriculus with ...
Source: Avian Pathology - Category: Pathology Authors: Tags: Avian Pathol Source Type: research

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Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research
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