Intake of nutrients (polyunsaturated fatty acids, tocols, and carotenes) and storage efficiency in different slow-growing chickens genotypes reared in extensive systems.

Even if the n-3 LC-PUFA did not show a clear trend ( Table 7 ), it should be emphasized that grass intake of walking chickens is a “natural” way to increase the n-3 LC-PUFA content of meat and magnify the low ALA content of the standard feed.

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The storage efficiency of tocols and carotenes showed a trend similar to that of n-3 PUFA but had higher variability, probably due to different physiological mechanisms (oxidative thrust, kinetic activity, energy balance, etc).

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