Abstract: A method of conditioning an animal for slaughter with a view to obtaining a meat product of enhanced nutritional value with regard to polyunsaturated fatty acid is described. The method involves administering to the animal a feed having elevated levels of polyunsaturated fatty acids. The feed includes fatty acids of the C18, n-6 and n-3 series, and the method additionally comprises administering further polyunsaturated fatty acids of the C20 and C22, n-3 series so that the polyunsaturated fatty acid content of the meat is improved and the fat firmness of the meat is maintained in a satisfactory physical condition.