Table 5). There was a greater proportion of n-3 PUFA after day 7 in the LSO group than in the LAR group, with a decrease occurring from day 7 in the brain of the LAR piglets only (diet£age interaction P¼0·02; Table 5). The 18:2n-6 to 18:3n-3 ratio was greater in the brain of the LSO piglets than in that of the LAR piglets over the whole period (diet effect P¼0·03; Table 5).