Table 1.
Descriptive statistics for udder measurements and milk yield in Pelibuey ewes.
| Variable | Description | Mean ± SD | Maximum | Minimum |
|---|---|---|---|---|
| MY | Daily milk yield (kg) | 0.39 ± 0.18 | 1.04 | 0.10 |
| UCi | Initial udder circumference (cm) | 39.61 ± 4.99 | 53.30 | 25.80 |
| UCf | Final udder circumference (cm) | 33.38 ± 4.59 | 45.0 | 24.30 |
| UDi | Initial udder height (cm) | 13.91 ± 2.51 | 20.30 | 5.00 |
| UDf | Final udder height (cm) | 12.51 ± 2.23 | 20.0 | 5.70 |
| UWi | Initial udder width (cm) | 11.68 ± 1.55 | 15.5 | 7.10 |
| UWf | Final udder width (cm) | 9.53 ± 1.79 | 15.2 | 1.30 |
| TDi | Initial diameter of the teat (cm) | 1.58 ± 0.62 | 2.90 | 1.00 |
| TDf | Final diameter of the teat (cm) | 1.49 ± 0.51 | 2.70 | 1.00 |
| TLi | Initial length of the teat (cm) | 2.64 ± 1.41 | 4.50 | 1.20 |
| TLf | Final length of the teat (cm) | 2.51 ± 0.37 | 3.70 | 1.20 |
| UVi | Initial udder volume (cm3) | 1790 ± 652.58 | 4271 | 664.47 |
| UVf | Final udder volume (cm3) | 1137 ± 384.81 | 2862 | 458.84 |
| VDF | Difference between UV (UVi − UVf, cm3) | 652.42 ± 446.88 | 2418 | 1.03 |
The suffix initial and final indicate that the measures were taken before (i) and after (f) every milking.