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Table 4 Total Staphylococcus and Streptococcus bacterial counts (cfu/mL) on teat skin from two herds (A, B) and for two pre-milking teat disinfection treatments (PTD: that received pre-milking teat disinfectant and NPTD: did not receive disinfectant) across four sampling points during lactation

From: Effect of pre-milking teat disinfection on new mastitis infection rates of dairy cows

  Herd A Herd B s.e. Significance p-value
Staphylococcus (cfu/mL) 52.4 14.5 3.76 < 0.001
Streptococcus (cfu/mL) 27.2 13.5 3.48 < 0.001
  NPTD PTD   
Staphylococcus (cfu/mL) 50.1 16.8 3.76 < 0.001
Streptococcus (cfu/mL) 30.1 10.6 3.47 < 0.001
  1. cfu/mL = Colony forming units per millilitre
  2. Total number of observations = 612