1Department of Anatomy and Histology, Chittagong Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chittagong-4225, Bangladesh
2Department of Microbiology and Veterinary Public Health, Chittagong Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chittagong-4225, Bangladesh
*Corresponding Author: Md. Shahriar Hasan Sohel, Department of Anatomy and Histology, Chittagong Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chittagong-4225, Bangladesh. Email: s.h.sohel08@gmail.com
Online published on 8 April, 2020.
Total 40 non-descriptive deshi chickens were reared in scavenging and intensive farming system (20 for each) from day 1 to 180. Gross examinations of different lymphoid organs and tissues were performed at D1, D30, D90 and D180 for both types of chickens. Tissue samples were stained with H and E stain and Am Scope image measurement software was used for histomorphometry. Gross and histomorphometrical parameters of thymus, spleen and cecal tonsils gradually increased significantly (P≦0.05) with the advancement of ages from D1 to D180 in both scavenging Deshi chickens (SDC) and captive Deshi chickens (CDC). Gross and histomorphometrical parameters of bursa increased up to D90 and thereafter decreased indicating the involution of bursa by D180. The gross and histomorphometrical parameters of bursa, thymus, spleen and cecal tonsils were significantly (P≦0.05) higher in all age groups of CDC (except D1 chicks) as compared with SDC, owing to the different patterns of rearing system.
Bursa, Cecal tonsil, Deshi chicken, Postnatal, Spleen, Thymus
