Skip to main content

Table 1a Effect of cluster type and plant vacuum level (kPa) on mean teat-tissue changes (mm) directly after milking and 15 minutes later - Experiment 1

From: Effect of liner design, pulsator setting, and vacuum level on bovine teat tissue changes and milking characteristics as measured by ultrasonography

  Cluster type Plant vacuum level
  WB NB s.e.d 40 44 50 s.e.d
Canal length 3.50 3.38 0.24 3.31 3.59 3.42 0.29
Canal length (15 min) 3.61a 2.95c 0.26 3.07 3.57 3.20 0.32
Teat diameter 0.46a 1.00b 0.27 0.73 1.11 0.35 0.33
Teat diameter (15 min) 0.45a 0.98b 0.18 0.60a 1.10b 0.37a 0.22
Cistern diameter 7.37a 8.20c 0.30 -7.67 -7.94 -7.74 0.37
Cistern diameter (15 min) 7.95a 6.73d 0.23 -7.25 -7.41 -7.36 0.28
Wall thickness 3.82a 2.81d 0.19 3.14 3.62 3.18 0.24
Wall thickness (15 min) 3.50a 2.68d 0.14 2.69 3.34 3.06 0.17
Teat length 11.07a 7.68c 1.06 10.19 8.17 9.77 1.30
Teat length (15 min) 2.03a 4.53c 0.82 3.71 2.67 3.46 1.01
Mean milk yield (kg) 17.66 17.83 0.36 17.66 17.60 17.98 0.44
  1. s.e.d.: standard error difference
  2. Values with different superscripts, within rows, for cluster type and plant vacuum differ significantly, ab P < 0.05,ac P < 0.01,ad P < 0.001.