Food Science of Animal Resources (한국축산식품학회지)

Korean Society for Food Science of Animal Resources (한국축산식품학회)
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Effect of Clay Mineral Pegmatite and Vitamin A and Supplements on the Physico-Chemical Characteristics of Fattening Hanwoo Steers

거정석과 비타민 A 급여가 거세한우 등심육의 이화학적 특성에 미치는 영향

  • Kim Byung-Ki (Gyeongsangbuk-Do Livestock Research Institute) ;
  • Go Si-Jang (Department of Livestock, Mungyeong city)
  • Published : 2005.06.01
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Abstract

This study was conducted to detennine the effect of dietary supplements of mineral powder (pegmatite) on the physico-chemical properties of M longissimuss for 24 Hanwoo steers. Each eight Hanwoo steers were randomly allotted to three treatments ; Control $(0\%)$, T1 (supplemented with pegmatite $2.0\%$ and vitamin A $0.2\%)$, T2 (supplemented with pegmatite $2.0\%$). Cooking loss was highest in control, while water holding capacity (WHC) was the highest in T2 (56.38) than the others. However, effect of the diets on meat color was not significantly different (p>0.05) Panel test scores of juiciness, tenderness and flavor of M longissinus were the highest for T1 $(4.6\~5.0)$ between the treatment group (p<0.05). The content of total fatty acid in M longissimus was the highest in T2 $(50.80\%)$ among the treatment group. Palmitic acid and oleic acid were siginificantly higher in T1 and control than those for the others(p<0.05). Unsaturated fatty acid (UFA) was highest in T2 $(58.57\%)$ than the others$(55.09\~55.64\%)$ (p<0.05).

본 연구는 거세한우 24두를 대상으로 점토 광물질(대조구-일반사료 : T1구-거정석 $2\%$+비타민 A $0.2\%$ 첨가 : T2구-거정석 $2\%$) 3개 처리구를 두고 생후 13개월부터 26개월까지 비육시험한 후 등심부위 근육을 분석하였다. 등심부위의 가열 감량은 대조구가, 보수성은 T2구(56.38)가 다른 처리구보다 크게 높았다(p<0.05). 관능검사의 결과 다즙성, 연도 및 향미는 T1구$(4.6\~5.0)$가 다른 처리구$(4.2\~4.5)$보다 통계적인 유의성이 인정되었으며(p<0.05), 육색은 처리구 사이에 특별한 변화가 없었다. 지방산조성에서 oleic acid는 T2구가 $50.80\%$로 가장 높았고, palmitic acid와 stearic acid는 대조구가, 불포화지방산은 T2구($(58.57\%)$가 다른 처리구보다 크게 높아 통계적인 유의차가 있었다(p<0.05).

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