The current study examined the effect of supplementing lambs with algae. Forty, three month old lambs were allocated to receive a control ration based on oats and lupins (n. =. 20) or the control ration with DHA-Gold™ algae (~. 2% of the ration, n. =. 20). These lambs came from dams previously fed a ration based on either silage (high in omega-3) or oats and cottonseed meal (OCSM: high in omega-6) at joining (dam nutrition, DN). Lamb performance, carcase weight and GR fat content were not affected by treatment diet (control vs algae) or DN (silage vs OSCM). Health claimable omega-3 fatty acids (EPA + DHA) were significantly greater in the LL of lambs fed algae (125 ± 6. mg/100. g meat) compared to those not fed algae (43 ± 6. mg/100. g meat) and this effect was mediated by DN. Supplementing with algae high in DHA provides a means of improving an aspect of the health status of lamb meat.