In the brain, the proportions of n-6 PUFA were similar between the LSO and LAR piglets at birth (Table 5). The pro- portion of n-3 PUFA was greater in the LSO group (P¼0·05; Table 5). Within the n-3 PUFA family, there were no differences between the two groups for 18:3n-3, 20:5n-3 and 22:5n-3. However, the proportion of 22:6n-3 tended to be greater in the LSO group than in the LAR group (P¼0·07; Table 5).