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Table 2 Clinical parameters in response to an intramammary inflammatory challenge with Streptococcus uberis in animal fed a control diet (CON), or a diet supplemented with a Saccharomyces cerevisiae fermentation product (NTK)

From: Feeding a Saccharomyces cerevisiae fermentation product improves udder health and immune response to a Streptococcus uberis mastitis challenge in mid-lactation dairy cows

Parameter2 TRT1 SEM P-value
CON NTK TRT Time TRT×Time
Phase 2
Systemic
  Rectal temp, °C 38.71a 38.53b 0.05 0.02 <.0001 0.05
  Respiration rate, × min 75.73 80.24 1.93 0.11 <.0001 0.34
  Heart rate, × min 27.05 25.7 1.69 0.58 0.0002 0.49
Udder specific
  Temp, challenged quarter, °C 42.55 43.18 0.71 0.54 0.005 0.96
  Temp, delta, °C 0.717 0.002 0.251 0.06 0.08 0.37
  SCS, challenge quarter 3.46 2.55 0.55 0.25 <.0001 0.29
  SCS, delta 1.11a -0.46b 0.52 0.05 <.0001 0.20
Circulating immune function
  Phagocytosis, monocytes, % cells 17.08a 12.45b 1.55 0.05 0.0005 0.01
  Phagocytosis, neutrophils, % cells 20.54 19.00 1.84 0.55 0.02 0.03
  Oxidative burst, monocytes, % cells 37.59 38.00 3.18 0.92 0.26 0.95
  Oxidative burst, neutrophils, % cells 73.4 77.55 2.83 0.30 0.05 0.77
  1. 1TRT Treatment, CON Control, NTK NutriTek® supplemented group (19 g/d)
  2. 2Delta values are calculated as the difference between measures in the right rear quarter (challenged with 2500 CFU of Strep. uberis) and measures in the left rear quarter (unchallenged); SCS Somatic cell score, calculated as log2(SCC/100,000) + 3, were SCC (somatic cell count) was expressed in unit of cells per microliter
  3. a,bDifferent superscripts denote statistical differences between the means (P < 0.05)