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Volume 6, Issue 9

Identification of biovars Gallinarum and Pullorum and their antibiotic resistance pattern in integrated crop-livestock farms and poultry meats Open Access

Abstract

Due to consumer demand, many conventional poultry farms are now growing poultry without antibiotics or synthetic chemicals. In addition to this, pasture/organic poultry farms have increased significantly in the USA, and they are also antibiotic- and chemical-free. According to recent reports, both antibiotic-free conventional and pasture poultry farmers are facing the re-emergence of bacterial diseases. Bacterial diseases cause higher mortality rates in birds and lead to non-profitable poultry farming. This study investigated the prevalence of subsp. serovar Gallinarum biovars Gallinarum (. Gallinarum), the causative agent of fowl typhoid, and subsp. serovar Gallinarum biovars Pullorum (. Pullorum), the causative agent of pullorum disease, within integrated crop-livestock/pasture farm environments and their processed products. Specifically, the study focused on both the pre-harvest period, which includes the conditions and practices on the farm before the crops and livestock are harvested, and the post-harvest period, which encompasses the handling, processing, and storage of the products after harvest. A total of 1286 samples were collected from six farms and adjacent 13 markets to determine the prevalence of . Gallinarum and . Pullorum by using both microbiological culture and molecular techniques, specifically PCR. Antimicrobial susceptibility testing was performed using the agar dilution method for the recommended antibiotics as described in the Clinical Laboratory Standards Institute (CLSI). . Pullorum was detected in 11 samples (2.7%), while . Gallinarum was found in six samples (1.5%) out of a total of 403 samples at the pre-harvest level. At the post-harvest level, only . Gallinarum was identified in 14 meat samples out of 883(1.6%) recovered from samples collected from retail markets. Antibiogram showed . Gallinarum and . Pullorum to be highly resistant to cephradine, trimethoprim-sulfamethoxazole, amoxicillin, streptomycin, and ampicillin. This data demonstrates that both . Pullorum and . Gallinarum are commonly present in farm poultry environments as well as the products sold in the markets, which warrants implementation of regular surveillance and monitoring programmes, as well as potentially requiring future control strategies to reduce . Pullorum and . Gallinarum transmission.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): antibiotic resistance , gallinarum , pasture farms , prevalence , pullorum and Salmonella enterica
Funding
This study was supported by the:
  • Lembaga Pengelola Dana Pendidikan (Award PD1012023071000358)
    • Principle Award Recipient: DitaJulianingsih
© 2024 The Authors
  • This is an open-access article distributed under the terms of the Creative Commons Attribution License. This article was made open access via a Publish and Read agreement between the Microbiology Society and the corresponding author’s institution.
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2024-09-30
2024-10-05
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Identification of Salmonella enterica biovars Gallinarum and Pullorum and their antibiotic resistance pattern in integrated crop-livestock farms and poultry meats
Access Microbiology 6, 000775.v6 (2024); https://doi.org/10.1099/acmi.0.000775.v6
/content/journal/acmi/10.1099/acmi.0.000775.v6
/content/journal/acmi/10.1099/acmi.0.000775.v6
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