The objective of this study was to test for different tuna oil feeding regimens, focusing mainly on the efficiency to enrich lean and adipose tissue with n-3 fatty acids and the expression of the adverse side-effects on performance, carcass, and pork quality. It was concluded that tuna oil feeding resulted in a lighter, less red and less yellow backfat and was found to increase the proportion of n-3 fatty acids to total fatty acids in treatments. The results show that, particularly under the condition of a continuous supply, much of the n-3 fatty acids ingested in early fattening can be recovered in pork.

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