Macroscopic and microscopic characterization of mycoplasmosis in commercial chickens in Barishal, Bangladesh

Authors

  • Sujala Bepary Department of Pathology and Parasitology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Bangladesh
  • Md Mostafijur Rahman Department of Pathology and Parasitology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Bangladesh
  • Md Saidur Rahman Department of Anatomy and Histology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Bangladesh
  • Shib Shankar Saha Department of Pathology and Parasitology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Bangladesh
  • Md Shah Alam Department of Pathology and Parasitology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Bangladesh
  • Md Royhan Gofur Department of Veterinary and Animal Sciences, University of Rajshahi, Bangladesh
  • Mst Ismat Ara Begum Department of Veterinary and Animal Sciences, University of Rajshahi, Bangladesh
  • Khondoker Jahengir Alam Department of Pathology and Parasitology, Faculty of Animal Science and Veterinary Medicine, Patuakhali Science and Technology University, Bangladesh

DOI:

https://doi.org/10.3329/aajbb.v6i3.57718

Keywords:

prevalence; gross and microscopic pathology; mycoplasmosis; broiler; layer; Barishal district

Abstract

Avian mycoplasmosis in commercial chicken is a serious problem around the world, and responsible for high economic losses and decreased poultry productivity. This study aimed to characterize the mycoplasma infection macroscopically and microscopically in commercially important poultry like broiler and layer in Barishal, Bangladesh. Diagnosis of mycoplasmosis was made on the basis of history, clinical signs, necropsy findings and histopathology of the suspected organs. The study was conducted on a total no. of 460 birds (broiler n=237; layer n=223) of 20 different farms of three different upazillas of Barishal district in Bangladesh. The overall prevalence of micoplasmosis was 26.52%. Layer chicken (30.04%) was more susceptible to mycoplasmosis than broiler chicken (23.20%). The highest prevalence of mycoplasmosis was observed in 3-6 weeks-aged chicken in both broiler (54.55%) and layer (35.82%) chicken. A significant difference (p<0.05) was observed in mycoplasmosis prevalence rate among the seasons. The highest prevalence rate of mycoplasmosis was in winter season followed by rainy and seasons. Major necropsy findings of mycoplasmosis include catarrhal hemorrhage and mucus exudation on tracheal mucosa and severe congestion, consolidation and reddish gelatinous mass over the lung surface. Mycoplasmosis caused severe tracheitis, bronchitis, air sacculitis, and pneumonia in chickens. Mycoplasma affected different organs in the chicken and hinder the production through morbidity and mortality. Present study will provide the baseline data for future in-depth research on mycoplasmosis to draw an effective policy for controlling and eradicating mycoplasmosis from commercial poultry.

Asian Australas. J. Biosci. Biotechnol. 2021, 6 (3), 153-160

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Published

2022-01-30

How to Cite

Bepary, S., Rahman, M. M. ., Rahman, M. S. ., Saha, S. S., Alam, M. S., Gofur, M. R. ., Begum, M. I. A. ., & Alam, K. J. (2022). Macroscopic and microscopic characterization of mycoplasmosis in commercial chickens in Barishal, Bangladesh. Asian-Australasian Journal of Bioscience and Biotechnology, 6(3), 153–160. https://doi.org/10.3329/aajbb.v6i3.57718

Issue

Section

Research Articles