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Table 1 Basic information and lactation performance of dairy cows with low, middle, and high somatic cell counts (SCC)

From: Prognostic potential of pre-partum blood biochemical and immune variables for postpartum mastitis risk in dairy cows

ItemsGroups1SEMP-value2
LSCCMSCCHSCCHsWkHs*Wk
Number of cows (head)232033
Parity2.82.92.70.170.26
SCC (103/mL)77.6346.01460.5
Milk yield (kg)34.3a31.4b26.5b0.71< 0.01< 0.010.96
Milk composition (%)
 Milk fat4.855.074.880.110.36< 0.010.53
 Milk protein3.24b3.26b3.35a0.030.02< 0.010.48
 Milk lactose4.96b4.97a4.80b0.03< 0.01< 0.010.75
 Total solids13.213.413.20.120.36< 0.010.72
Milk urea nitrogen (mgN/dL)12.2a10.4b8.5b0.52< 0.010.430.95
  1. 1LSCC = cows with SCC (SCC < 200,000 cells ml− 1, n = 23); MSCC = cows with middle SCC (200,000 cells ≤ SCC < 500,000 cells ml− 1, n = 20); HSCC = cows with high SCC (SCC ≥ 500,000 cells ml− 1, n = 33)
  2. 2Effect of health status (Hs), sampling week (Wk), and interaction of health status by sampling week (Hs × Wk)
  3. a,bMeans within the same row followed by different superscripts differ at P < 0.05