Table 3 Comparison between blood flow variables of the milk vein and musculophrenic vein recorded on the left and right side of 5 cows (mean, sd, min., max.)
Vessel | Variable | Left | Right |
|---|---|---|---|
Milk vein | Distance between vein and skin surface (cm) | 0.48 ± 0.10 (0.33 - 0.64) | 0.44 ± 0.09 (0.32 - 0.56) |
|  | Diameter of vein (cm) | 1.93 ± 0.52 (1.30 - 2.97) | 1.86 ± 0.47 (1.41 - 3.00) |
|  | Maximum blood flow velocity (cm/s) | 30.77 ± 15.4 (11.9 - 56.1) | 37.21 ± 15.3 (11.0 - 58.9) |
|  | Minimum blood flow velocity (cm/s) | 2.10 ± 1.4 (0.3 - 5.0) | 2.15 ± 1.0 (0.6 - 3.7) |
|  | Mean maximum blood flow velocity (cm/s) | 21.03 ± 11.8 (6.5 - 40.5) | 24.59 ± 11.9 (6.6 - 37.9) |
|  | Blood flow volume (l/min) | 1.90 ± 1.30 (6.5 - 40.5) | 1.85 ± 1.0 (0.6 - 4.1) |
Musculophrenic vein | Distance between vein and skin surface (cm) | 1.09 ± 0.27 (0.47 - 1.42) | 1.17 ± 0.31 (0.73 - 1.83) |
|  | Diameter of vein (cm) | 0.73 ± 0.28 (0.28 - 1.32) | 0.73 ± 0.29 (0.40 - 1.48) |
|  | Maximum blood flow velocity (cm/s) | 99.67 ± 44.0 (30.0 - 189.5) | 88.91 ± 30.9 (35.6 - 126.8) |
|  | Minimum blood flow velocity (cm/s) | 6.21 ± 4.9 (0.8 - 18.4) | 8.06 ± 7.9 (1.7 - 32.9) |
|  | Mean maximum blood flow velocity (cm/s) | 65.89 ± 36.2 (15.1 - 136.3) | 58.51 ± 27.2 (18.5 - 94.5) |
|  | Blood flow volume (l/min) | 0.93 ± 0.80 (0.0 - 3.1) | 0.67 ± 0.20 (0.2 - 1.0) |