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International Journal of Poultry Science

.: Home > International Journal of Poultry Science > 2013 > Volume 12 Number 6 > Khenenou Tarek, Melizi Mohamed, Benzaoui Hassina and Ibrir Messaouda

Histological Study of the Bursa of Fabricius of Broiler Chickens During Heat Stress

Khenenou Tarek, Melizi Mohamed, Benzaoui Hassina and Ibrir Messaouda
Laboratory of Animal Health, Animal Production and Environment (ESPA), 1 Department of Veterinary Medicine, University of Batna, Algeria EPH Batna, Algeria
Abstract :

One hundred, one day old Boiler chicks were randomly divided into two groups and kept in two rooms of different temperatures, first at a temperature of 35±2°C and the second at a temperature of 24±2°C (neutral). A samples were collected after heat exposure at 4 stages during experimental (1st, 2nd, 4th and 6 th week). Samples which were taken from the second room were served as control group. The result revealed that heat stress decreased weight of the bursa of Fabricius. Birds sacrificed at the sixth week showed a bursa with a thin parenchyma, the basal membrane hardly visible, the epithelium is folded, appearance of numerous cysts and leading subepithelial connective tissue, follicles showing lymphoid depletion and necrosis in more than 45 % of cells and moderate interfollicular fibrosis.

Keywords :
Histology, bursa of Fabricius, broiler chickens, heat stress

Date Deposited : 18 Mar 2015 10:55

Last Modified : 18 Mar 2015 11:00

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Volume 12, Number 6, - 2013 , ISSN 1682-8356

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