Weaning is a stressful period for the piglet, invariably typified by low voluntary feed intake and reduced performance. Moreover, if siblings are separated and mixed with other litters, stress increases and the learned stimulus of the group to feed is disturbed (Brooks et al., 2003). This experiment was part of a larger investigation into the voluntary feed intake of the piglet in the immediate post weaning period. We investigated the difference between mixed litter origin or sibling groups on latency to initiate feeding and performance to day six post weaning. We hypothesised that mixing litters would increase latency to first feeding and reduce growth rate in the first few days after weaning.