Evaluation of Bursal Index and Bursal Lesion Scores in Broiler Flocks

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Δημοσιευμένα: Jul 9, 2023
Ενημερώθηκε: 2023-07-09
Εκδόσεις:
2023-07-09 (2)
DOI: https://doi.org/10.12681/jhvms.28532
A Zahedi
Department of Veterinary Pathology, Faculty of Veterinary Medicine, Islamic Azad University, Rasht Branch, Rasht, Iran
https://orcid.org/0000-0001-8729-8409
K Jamshidi
Department of Veterinary Pathology, Faculty of Veterinary Medicine, Islamic Azad University, Garmsar Branch, Garmsar, Iran
https://orcid.org/0000-0002-2036-6339
M Poorghasemi
Department of Animal Science, Faculty of Agriculture, Islamic Azad University, Rasht Branch, Rasht, Iran
https://orcid.org/0000-0001-9199-0828
Περίληψη

Background and Aims: The bursa of Fabricius (BF) is recognized as a vital organ that plays a crucial role in birds immunity. In order to determine the immunological status of the birds, this study was conducted to evaluate the bursal index, and bursal lesion scores in broilers.

Materials and Methods: Therefore, a total of 200 broilers, 35-45 days of age, from 10 broiler flocks were randomly selected, weighed, then sacrificed. At necropsy, the bursa of Fabricius were obtained, examined, and weighed. Bursal index (BI) was calculated. Representative pieces of tissues from bursa of Fabricius were preserved in 10% neutral buffer formaldehyde for further histopathological evaluation.

Results: The results obtained from (BI) calculated during the study period for all 22 broiler farms, revealed that more than 81% of the birds were included in bad group and less than 19% in mediocre group. Degree of microscopic lesions between different groups and even within one group varied from 0 (normal) to 5 (atrophy of BF) and included lymphoid necrosis in follicles, hyperplasia and folding of bursal inner epithelium, and formation of fibrous connective tissue within the follicles. Average bursal lesion scores for all groups under study was recorded as 2.09%.

Conclusions: On the basis of all results including (BI) and bursal lesion scores it is concluded that bursal lymphoid structures suffer various degree of pathological lesions indicating suppressed immunity in broiler farms along with poor performance.
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Αναφορές
Ifrah ME, Perelman B, Finger A, Uni Z. The role of the bursa of Fabricius in the immune response to vaccinal antigens and the development of immune tolerance in chicks (Gallus domesticus) vaccinated at a very young age. Poult Sci. 2017; 96(1): 51-57.
Taylor RL, McCorkle FM. A landmark contribution to poultry science-immunological function of the bursa of fabricius. Poult Sci. 2009; 88(4): 816-823.
Toivanen P, Naukkarinene H, Vannino O. What is the function of the bursa of Fabricius. Avian Immunol. 1987; 1: 79-92.
Heidari S, Toghyani M. Effect of stocking density and methionine levels on growth performance and immunity of broiler chicks. Iranian J Appl Anim Sci. 2018; 8(3): 483-489.
Ayman U, Alam M, Das S. Age-related development and histomorphological observations of bursa of Fabricius in sonali chicken. J Adv Biotechnol Exp Ther. 2020; 3(1): 20-28.
Kundu P, Narang G, Kajal S, Kumari P. Effect of live infectious bursal disease vaccines on bursa of Fabricius. Pharm Innov J. 2018; 7(11): 91-94.
Tahmoorespur M, Nazifi N, Pirkhezranian Z. In silico prediction of b-cell and t-cell epitopes of protective antigen of Bacillus anthracis in development of vaccines against anthrax. Iranian J Appl Anim Sci. 2017; 7(3): 429-436.
Van den Berg TP, Eterradossi N, Toquin D, Meuleman SG. Infectious bursal disease (Gumboro disease). Rev Sci Tech. 2000; 19(2): 527-543.
Muskett JC, Hopkins IG, Edwards KR, Thornton DH. Comparison of two infectious bursal disease vaccine strains: Efficacy and potential hazards in susceptible and maternally immune birds. Vet Record. 1979; 104: 332-334.
Bolis DA, Paganini FJ, Simon VA, Zuanaze M, Scanavini NH, Correa A, Ito N. Gumboro disease; evaluation of serological and anatomopathological response vaccinated broiler chickens challenged with very virulent virus strain. Brazil J Poult Sci. 2003; 5(2): 137-146.
Cooper MD, Peterson RDA, Good RA. Delineation of the thymic and bursal lymphoid systems in the chicken. Nature. 1965; 205: 116-143.
Cooper MD, Peterson RDA, South MA, Good RA. The functions of the thymus system and the bursa system in the chicken. J Exp Med. 1966; 123: 75-102.