MORPHOLOGICAL AND HISTOCHEMICAL STUDY OF HARDERIAN GLAND OF DOMESTIC PIGEON (COLUMBA LIVIA DOMESTICA)

Authors

  • Ali F. Reshag Department of Anatomy and Histology, College of Veterinary Medicine University of Baghdad, Baghdad, Iraq
  • Ilaf Hassan Hadi Department of Anatomy, College of Medicine, Al-Iraqia University, Baghdad, Iraq
  • Hadaf H. Mohammed Department of Anatomy and Histology, College of Veterinary Medicine University of Baghdad, Baghdad, Iraq

Keywords:

Columba, Harderian gland, Histochemical study, Russell bodies, Pigeon

Abstract

    The aim of this work is to study the histological and histochemical structure of the Harderian gland in indigenous pigeons. Samples were obtained from 10 males and 10 females of adult healthy pigeons. Hematoxylin and eosin, Alcian blue (pH 2.5), periodic acid-Schiff and promo phenol blue, stains were used for paraffin section examination. The gland was teardrop like in shape, light brown to pink in color, capsulated with thin connective tissue. It was multilobular compound acinotubular in structure and lined by columnar epithelial cells. Lymphocyte, plasma cells and plasma cells with Russell bodies were present underneath the epithelia of central collecting duct and around the secretory unite. Histochemically; the epithelial cells of both secretory unites and their ducts contained acidic mucins. Russell bodies gave positive reaction with periodic acid Schiff reagent. The present of immunoglobulin was proved in the cytoplasm of plasma cells with Russell body. There were no differences in Harderian gland in both sexes. In conclusion, the Harderian gland of pigeon was histologically and histochemically well developed, and it is immunological effective   secondary lymphatic organ, and it had few differences from the gland of other birds.

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Published

2016-12-01

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Section

Original Articles