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- Recording Your Sheep - Table 1
Recording Your Sheep - Table 1
Standard Performance Traits
Raw Data | Trait | |
---|---|---|
Litter Size Born | Prolificacy | This trait is defined as the total number of lambs born alive and dead when pregnancy reaches full term. Ewes that are barren or abort are considered to have a litter size of 0. |
Litter Size Reared | Prolificacy Maternal ability of ewe |
If lambs are weighed at 8 weeks of age or at scanning they are deemed to have been successfully reared and the ewe’s performance record will be credited accordingly. |
Eight Week Weight (kg) | Growth rate to 8 weeks of age Maternal ability of ewe |
Weight at 8 weeks of age. To achieve an adjusted 8-week weight lambs must be weighed between 42 and 84 days of age. |
Scan Weight (kg) | Growth rate to 21 weeks of age | Weight at scanning time, when lambs are 21 weeks of age. |
Muscle Depth (mm) | Carcase muscling | Measured at 21 weeks of age by a technician. One ultrasound measurement taken across the third lumbar vertebra. |
Fat Depth (mm) | Leanness | Measured at 21 weeks of age by a technician. Three ultrasound measurements taken across the third lumbar vertebra. |
Mature size (kg) | Ewe efficiency | Ewe liveweight at first mating. |
Sheep Management