In recent years, organic animal products have received a significant attention in most developed countries, as the environmentally friendly products are considered to be a healthier and safer than those produced by intensive
production system. Therefore, the objective of this study was to investigate the effect of free-range outdoor and conventional confined-indoor feeding systems on growth performance, meat quality and fatty acid compositions. It was found that that the organic rearing system significantly influence meat quality of longissimus muscle for Korean native black pigs (KNPs). The organic system resulted in significantly highermyoglobin content, and consequently higher redness value (CIE a*) than the conventional one. The current study also identified that the organic system changed fatty acid composition of intramuscular fat, resulting in significantly higher levels of PUFA,USFA and PUFAn-3. In this respect, the quality of meat can be proved to benefit from the organic system for pig production.

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