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March 2, 2026Veterinární MedicínaOpen Access

Bovine mastitis: Risk factors and isolation of Gram-negative bacteria in Western Algeria

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Authors

CBC BounouaDSD SounaMBMEA Bekara

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Overview

Cross-sectional study reveals risk factors and prevalence of Gram-negative bacteria in bovine mastitis cases.

Key Points

  • This study aims to determine the prevalence of bovine mastitis and identify associated risk factors and Gram-negative bacteria isolates.
  • Conducted a cross-sectional study in Western Algeria
  • Sampled 524 cows using clinical examination and the California mastitis test
  • Performed bacteriological assays on milk samples
  • Employed generalized linear mixed models to identify risk factors
  • Prevalence of mastitis was found to be 59.7% at the cow level
  • 12.6% of cases were clinical mastitis (CM) and 47.14% were subclinical mastitis (SCM)
  • 65.5% of mastitis-affected cows tested positive for Gram-negative bacilli
  • Most commonly isolated bacteria were Escherichia spp. (44%), Klebsiella spp. (23.1%), and Pseudomonas spp. (11.6%)
  • Risk factors for SCM included parity, visitor contact, and daily milk yield, while foremilk discarding reduced SCM risk.

Cite This Study

Bounoua et al. (2026) studied this question.

synapsesocial.com/papers/69a528b3f1e85e5c73bf02edhttps://doi.org/10.17221/40/2025-vetmed
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