Sows received a diet containing either sunflower oil (low 18:3n-3 with 18:3n -3 representing 3% of total fatty acids) or a mixture of extruded linseed and sunflower oil (medium 18:3n-3 with 9% of 18:3 n-3) or extruded linseed (high 18:3n-3 with 27% of 18:3n-3) during gestation and lactation .