비육돈 사료내 산조인(Zizyphus vulgaris)의 급여가 성장, 혈액내 Cortisol 및 육질 특성에 미치는 영향

This study was conducted to evaluate the effects of Zizyphus vulgaris supplementation on growth performance, blood cortisol and meat quality characteristics in finishing pigs. The total of thirty-six [DurocxYorkshirx Landracel pigs (91±2.11 kg average initial body weight) were used in a 30-days assay. Dietary treatments included 1) CON (basal diet), 2) T1 (basal diet for 15 days and 0.1% Zizyphus vulgaris for 15 days) and 3) T2 (0.1% Zizyphus vulgaris for 30 days). The ADG (Average daily gain), ADFI (Average daily feed intake) and ADG/ADFI during the feeding period were not significantly differences among the treatments (p>0.05). Backfat thickness of pigs fed CON was higher than those of T1 and T2 (p0.05). The Hunter`s L^(*) (lightness) value of loin in the pork fed CON was higher than that of loin in the pork fed T1 and T2 (p0.05). There were not found remarkable differences in sensory properties (marbling, firmness and color) among the treatments. The results from the present study suggest that Zizyphus vulgaris could be a effective feed additive to improve meat quality of pigs. However, further research is needed to investigate effects of carcass characteristics.