Table 4 Least Squares Means of teat diameter, teat cistern wall thickness, and teat canal length of teats milked with extended and soft liners and overmilked for 5 minutes or not. Measurements were done by ultrasound and given as absolute values or relative to pre-teat preparation (mm). Dimensions are given from pre-teat preparation (PRP), after preparation (POP), immediately after milking (AM), and 20 minutes after milking (AM+).
Liner Overmilking | Extended liner | Soft liner | |||
|---|---|---|---|---|---|
- | + | - | + | Level of sign. | |
Absolute values | |||||
PRP | 21.6 | 22.0 | 20.4 | 21.8 | |
POP | 21.4 | 23.2 | 20.8 | 22.8 | |
AM | 19.2 | 20.8 | 19.3 | 19.3 | |
AM+ | 20.3 | 20.3 | 20.0 | 19.7 | |
Relative values | |||||
POP-PRP | -0.2 | 1.2 | 0.4 | 1.0 | |
AM-PRP | -2.4 | -1.2 | -1.1 | -2.5 | |
AM+-PRP | -1.3 | -1.7 | -0.4 | -2.1 | |
AM+-AM | 1.1 | -0.5 | 0.7 | 0.4 | |
Teat cistern wall | |||||
Absolute values | |||||
PRP | 5.5 | 6.0 | 5.2 | 6.7 | |
POP | 5.4 | 6.1 | 5.3 | 6.8 | |
AM | 6.5 | 9.3 | 6.5 | 8.1 | + |
AM+ | 7.3 | 7.9 | 6.9 | 8.0 | |
Relative values | |||||
POP-PRP | -0.1 | 0.1 | 0.1 | 0.1 | |
AM-PRP | 1.0 | 3.3 | 1.3 | 1.4 | |
AM+-PRP | 1.8 | 1.9 | 1.7 | 1.3 | |
AM+-AM | 0.8 | -1.4 | 0.4 | -0.1 | |
Teat canal length | |||||
Absolute values | |||||
PRP | 11.4 | 11.2 | 11.2 | 12.9 | |
POP | 11.9 | 11.4 | 12.5 | 14.3 | ** |
AM | 14.8 | 14.4 | 15.8 | 16.9 | * |
AM+ | 13.6 | 15.0 | 12.0 | 13.2 | |
Relative values | |||||
POP-PRP | 0.5 | 0.2 | 1.3 | 1.4 | |
AM-PRP | 3.4 | 3.2 | 4.6 | 4.0 | |
AM+-PRP | 2.2 | 3.8 | 0.8 | 0.3 | |
AM+-AM | -1.2 | 0.6 | -3.8 | -3.7 | ** |