Wean lambs no later than 14 weeks after the start of the lambing. At three months, milk provides only 10% of total feed requirements. Weaning onto high-quality pasture with a low risk of worms will ensure continued growth and low post-weaning mortality.
Weaning lambs at an earlier age has production benefits, such as:
- heavier liveweights, which can be more easily maintained for turn-off or until first joining
- better ewe condition, due to a longer post-weaning recovery period
- higher conception rates for ewes at next joining
- more lambs weaned from the following year’s lambing.
- weaned lambs grow more wool
- breeding ewes grow more wool.
Aim to have weaners reach 45% of their standard reference weight at weaning. Weigh or assess a representative sample of lambs at weaning and when practical draft weaners into groups for preferential management. Manage weaners that weigh less than 45% of their standard reference weight (SRW) to ensure weight gains of at least 1 kg per month to hit their target and keep growing. Post-weaning mortality is highest in the three months following weaning, with the lightest weight weaners being most at risk.
Monitor or assess weaner liveweights regularly post weaning to ensure weaners keep growing at the targeted growth rate. Monitor pasture quality and quantity to feed budget and check the feed on offer is meeting the nutritional requirements of weaners.