Maturity at lambing Number of lambs born Range
Shearling Ewes 1.58 1.3 - 1.8
Mature Ewes 1.7171 1.5 - 1.9


Number of lambs Shearlings Mature Ewes
Singles 5.2kg 5.6kg
Twins 4.2kg 4.7kg
Triplets 3.7kg 4.0kg


Ranges reflect different production systems, time of lambing and intensity of feeding and finishing. Ewe lambs achieve 90-92% of ram lamb figures. Suffolk cross lambs easily achieve 40kg weights at 15-16 weeks with the ideal 3mm backfat.

Days Weight/scan Range
56 (8 weeks) 32.6kg 25kg to 41.3kg
147 (21 weeks) 70.5kg 47kg to 88.1kg
147 muscle 35mm 29mm to 46.8mm
147 fat 4.31mm 1.5mm to 8mm