Vacuum level - kPa | 40 low-level | 44 low-level | 50 mid-level | Â | |||
---|---|---|---|---|---|---|---|
Cluster Type | NB | WB | NB | WB | NB | WB | s.e.d |
Canal length | 3.18 | 3.45 | 3.46 | 3.33 | 3.51 | 3.73 | 0.41 |
Canal length (15 min) | 2.73 | 3.42 | 3.10 | 4.05 | 3.03 | 3.37 | 0.45 |
Teat diameter | 0.21b | 1.26a | 0.67ab | 1.55a | 0.52b | 0.19b | 0.47 |
Teat diameter (15 min) | -0.03d | 1.22a | 0.70ad | 1.50a | 0.68d | 0.06d | 0.32 |
Cistern diameter | -7.33 | -8.01 | -7.03 | -8.85 | -7.73 | -7.75 | 0.52 |
Cistern diameter (15 min) | -6.67b | -7.82a | -6.42b | -8.40a | -7.10b | -7.62ab | 0.40 |
Wall thickness | 2.63 | 3.65 | 2.86 | 4.38 | 2.94 | 3.43 | 0.34 |
Wall thickness (15 min) | 2.30b | 3.43a | 2.78b | 3.90a | 2.95b | 3.20b | 0.24 |
Teat length | 11.62 | 8.75 | 11.17 | 5.17 | 10.42 | 9.12 | 1.83 |
Teat length (15 min) | 4.50 | 2.92 | 4.67 | 0.67 | 4.42 | 2.50 | 1.43 |
Mean milk yield (kg) | 18.05 | 17.27 | 17.05 | 18.15 | 18.38 | 17.58 | 0.63 |