Journal
TISSUE & CELL
Volume 45, Issue 3, Pages 191-197Publisher
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.tice.2012.12.001
Keywords
Harderian gland; Cecal tonsil; Trachea; Immunoglobulin containing plasma cells; Broiler; Baby Chick Ranikhet Disease Vaccine (BCRDV)
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Funding
- University Grants Commission (UGC, Bangladesh)
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Immunohistochemical studies of Harderian gland, cecal tonsil and trachea of various groups of broiler chickens and the response of Baby Chick Ranikhet Disease Vaccines (BCRDV) on the mobilization of Igs-cells during postnatal development of organs was investigated in the Dept. of Anatomy and Histology, Bangladesh Agricultural University, Mymensingh. In this study twelve chickens were grouped into vaccinated broilers (D-14 and D-28) which had received vaccines first at D-3 of age and a booster dose given at D-13; and non-vaccinated broilers (D-1) which had not been vaccinated. In this study, it was observed that the frequency and distribution of Igs-positive cells were higher at D-14 and at D-28 rather than D-1. Among Igs-positive cells, the IgG-positive cells were significantly higher than IgM and IgA-positive cells in the Harderian gland of D-14 and D-28 groups of chickens, however, in day-old chickens, the frequency of IgM-positive cells in this gland were greater. In the cecal tonsil, the frequency and distribution of IgG-positive cells were significantly higher than IgA- and IgM-positive cells both at D-14 and D-28 ages of chicken. On the other hand, in day-old chickens, the frequency and distribution of IgA-positive cells were insignificantly greater, followed by IgM and IgG-positive cells. In the trachea, few immunoglobulin-containing plasma cells were distributed in the subepithelial layer. IgM-positive cells were higher followed by IgG and IgA-positive cells in the trachea in D-14 and D-28 groups of chickens. In the same organ, IgG-positive plasma cells were greater than IgA and IgM-positive cells at one-day old. When the data for Harderian gland, cecal tonsil and trachea were compared statistically, it was observed that Igs-positive cells were statistically more common in cecal tonsils in day old chickens, and with the advancement of age, Igs-positive cells were found more in the Harderian gland. In conclusion, with the advancement of age in chickens the Harderian gland uptake is a function of the cecal tonsil due to its functional atrophy. (C) 2012 Elsevier Ltd. All rights reserved.
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