Etiopathological Study of Colisepticemia with Coinfection of Low Pathogenic Avian Influenza and Mycoplasma in Broilers

Authors

  • Pradhnya Choudhari Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Poultry Research Station, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Department of Veterinary Pathology, College of Veterinary Sciences, GB Pant University of Agriculture and Technology, Pantnagar-263145, US Nagar, Uttarakhand, India , Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India
  • Digjay V. Kabariya Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Poultry Research Station, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Department of Veterinary Pathology, College of Veterinary Sciences, GB Pant University of Agriculture and Technology, Pantnagar-263145, US Nagar, Uttarakhand, India , Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India
  • Vikas R. Bhagat Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Poultry Research Station, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Department of Veterinary Pathology, College of Veterinary Sciences, GB Pant University of Agriculture and Technology, Pantnagar-263145, US Nagar, Uttarakhand, India , Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India
  • Manisha Parihar Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Poultry Research Station, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Department of Veterinary Pathology, College of Veterinary Sciences, GB Pant University of Agriculture and Technology, Pantnagar-263145, US Nagar, Uttarakhand, India , Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India
  • Dinesh J. Ghodasara Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Poultry Research Station, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Department of Veterinary Pathology, College of Veterinary Sciences, GB Pant University of Agriculture and Technology, Pantnagar-263145, US Nagar, Uttarakhand, India , Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India
  • Bharat B. Bhanderi Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Poultry Research Station, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India , Department of Veterinary Pathology, College of Veterinary Sciences, GB Pant University of Agriculture and Technology, Pantnagar-263145, US Nagar, Uttarakhand, India , Department of Veterinary Microbiology, College of Veterinary Science and Animal Husbandry, Kamdhenu University, Anand-388001, India

DOI:

https://doi.org/10.48165/ijvsbt.2026.22.06.27

Keywords:

Broiler, Colisepticemia, LPAI, Mycoplasma, PCR, RT-PCR

Abstract

The present study was conducted to detect Low Pathogenic Avian Influenza (LPAI) and Mycoplasma in 30 broiler flocks (5 birds per flock) showing gross lesions of colisepticemia (Fibrinous pericarditis and perihepatitis) without any significant gross lesion in trachea and bronchi. The study comprised of flock wise mortality, gross and histopathological examination of colisepticemia and molecular identification from pooled sample of trachea for the presence of E. coli, LPAI, Mycoplasma gallisepticum and Mycoplasma synoviae. The mortality among 30 flocks varied between 0.32 and 6.75% with an average of 1.89%. Gross and histopathological lesions were predominantly found in liver, heart, spleen and lungs. All the 30 flocks were found positive for phoA gene of E. coli, whereas 5 (16.60%), 9 (30%) and 4 (13.30%) flocks were positive for H9N2 subtype of Avian influenza virus, i.e. LPAI, Mycoplasma gallisepticum and Mycoplasma synoviae, respectively. Findings of the present study confirmed the concurrent infection of colisepticemia with other primary pathogens such as LPAI, M. gallisepticum and M. synoviae, which indicate that Escherichia coli is a major secondary opportunistic pathogen in a respiratory disease complex of chicken.

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Published

2026-11-10

Issue

Vol. 22 No. 6 (2026): The Indian Journal of Veterinary Sciences and Biotechnology (IJVSBT) (Nov-Dec) 2026

Section

Research Article

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Copyright (c) 2026 Indian Journal of Veterinary Sciences and Biotechnology

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How to Cite

Etiopathological Study of Colisepticemia with Coinfection of Low Pathogenic Avian Influenza and Mycoplasma in Broilers. (2026). Indian Journal of Veterinary Sciences and Biotechnology, 22(6), 156-160. https://doi.org/10.48165/ijvsbt.2026.22.06.27