Animals (Apr 2024)

Interleukin-6 as a Milk Marker of Clinical and Subclinical Intramammary Infections (IMI) in Cows Caused by <i>Streptococcus</i> spp.

  • Mariola Bochniarz,
  • Monika Ziomek,
  • Marek Szczubiał,
  • Roman Dąbrowski,
  • Marco Wochnik,
  • Łukasz Kurek,
  • Urszula Kosior-Korzecka,
  • Aneta Nowakiewicz

DOI
https://doi.org/10.3390/ani14071100
Journal volume & issue
Vol. 14, no. 7
p. 1100

Abstract

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The aim of the study was to evaluate the concentrations of Interleukin-6 (IL-6) in milk and serum of healthy cows (HE) and cows with mastitis caused by Streptococcus spp. The blood and milk samples were obtained from Holstein-Friesian cows (Lublin region, Poland). A total of 43 milk and serum samples from 28 cows with mastitis and 15 healthy cows were selected for study. IL-6 levels in milk from HE cows ranged from 6.09–80.24 pg/mL (median 26.6 pg/mL) and were significantly lower than in milk from both cows with clinical and subclinical mastitis (487.09 pg/mL vs. 26.6 pg/mL in CM, p p Streptococcus spp. develop a local immune response in the mammary gland in response to the pathogen. Monitoring of IL-6 levels in milk can allow early detection of mastitis, which is especially important in cases of subclinical inflammation.

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