Microscopic changes in laying hens kidneys at the egg drop syndrome

Автор(и)

  • B. V. Borisevich Національний університет біоресурсів і природокористування України image/svg+xml
  • V. V. Lisova Національний університет біоресурсів і природокористування України image/svg+xml

DOI:

https://doi.org/10.31548/ujvs2020.03.005

Анотація

Abstract. In the article presented results of study of microscopic changes in laying hens kidneys at the egg drop syndrome (EDS-76). Clinical signs of EDS-76 in laying hens included decreasing of egg production, suppression, changes in egg pigmentation, laying of eggs of small size, with a soft shell, or without a shell at all. At the dissection registered enlarged, pale kidneys with clearly dilated blood vessels. The lungs in most cases had an uneven red-pink color. In many laying hens, the spleen had an uneven color – it showed areas of different sizes and shapes of grayish, bluish and red. In some cases, the liver was unevenly colored (with areas of yellowish and clay color), and in other cases, point and spotted hemorrhages were found under its capsule. However, the most pronounced and permanent gross changes registered in reproductive organs. At histological examinations of kidneys of laying hens infected with EDS-76 virus, we found that in this organ there are specific for this disease and nonspecific for it microscopic changes, which are registered in kidney damage of various etiologies. Specific for EDS-76 changes include the presence of basophilic and eosinophilic inclusion bodies in the nuclei of many epithelial cells of convoluted tubules, part of epithelial cells of straight tubules, and part of endothelial cells, podocytes and mesangiocytes of the many glomeruli. Some of nuclei completely acquired distinctly oxyphilic properties. Nonspecific microscopic changes included diverse changes in nuclei and cytoplasm of epithelial cells of convoluted and straight tubules, violations of intercellular junctions, damages of renal corpuscles. 
Keywords: laying hens, egg drop syndrome, clinical signs, gross changes, kidneys, microscopic changes.

Посилання

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2020-09-09

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