Managing Twin Lambs: Welfare at the Critical Neonatal Interface

Twin lambs are at significantly higher risk of welfare problems than singles, requiring targeted management at birth to prevent mismothering, hypothermia, starvation, and competition-related disadvantage.

Key Facts

Twins represent 50-70% of births in many improved sheep breeds; triplets are increasingly common in prolific breeds like the Finnish Landrace and Romanov.
Ewes with twins have more complex bonding behavior than single-bearing ewes; the risk of mismothering — failing to bond with one or both lambs — is substantially higher with twins.
Competition for milk in twin pairs disadvantages smaller lambs; birth weight differences of as little as 200g can determine whether a lamb thrives or fails to gain adequate colostrum.
Triplet and quad lambs almost always require at least one to be fostered or artificially reared, as ewes cannot sustain multiple lambs at adequate nutritional levels.
Hypothermia risk is higher in twins than singles due to lower birth weights, reduced maternal attention divided between two lambs, and competition for shelter beneath the ewe.
Lamb survival rates with well-managed twin births can match singleton rates; poor management leads to substantially higher twin lamb mortality than single mortality.
Colostrum management is critical: twin lambs receiving adequate colostrum within the first 2 hours have dramatically better survival and welfare outcomes.

Welfare Considerations

The welfare of twin lambs depends almost entirely on management quality in the first 24-48 hours of life. Mismothered lambs — rejected by or separated from their ewe — face rapid hypothermia, starvation, and death without intervention; the experience of a lamb calling persistently for its mother while being rejected represents acute distress. Competition between twin pairs creates persistent disadvantage for smaller or weaker lambs that may go unrecognized until significant welfare compromise has occurred. Lambing supervision — particularly in twin-bearing ewes — is the single most impactful welfare intervention: early identification of mismothering, assistance ensuring both lambs receive colostrum, and provision of supplemental warmth for chilled lambs prevent the majority of twin lamb welfare failures. The economic value of improved lamb survival in well-managed twin systems makes the welfare and production arguments for supervision programs mutually reinforcing.

What You Can Do

Prioritize supervision of ewes identified as carrying twins by pregnancy scanning during the lambing period.
Mark twin pairs at birth to enable quick identification of mismothering or competition problems.
Ensure both lambs in a twin pair receive adequate colostrum within 2 hours of birth — supplementation may be needed.
Provide warm, dry, sheltered lambing pens to reduce hypothermia risk for smaller twin lambs.
Consider stomach tubing colostrum into weak twin lambs rather than relying on suckling behavior in cold or stressed animals.