Journal of Animal Science and Technology

  • 제52권5호
  • /
  • Pages.427-434
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  • 2010
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  • 2672-0191(pISSN)
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  • 2055-0391(eISSN)
한국축산학회 (Korean Society of Animal Sciences and Technology)
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한우 당대검정 탈락축의 산육능력 및 육질 향상에 관한 연구

Studies on Growth Performance and Meat Quality Improvement of the Unselected Hanwoo Bulls in the Performance Test

  • 김형철 (농촌진흥청 국립축산과학원) ;
  • 이창우 (강원도 축산기술연구센터) ;
  • 박병기 (농촌진흥청 국립축산과학원) ;
  • 이상민 (농촌진흥청 국립축산과학원) ;
  • 권응기 (농촌진흥청 국립축산과학원) ;
  • 임석기 (농촌진흥청 국립축산과학원) ;
  • 전기준 (농촌진흥청 국립축산과학원) ;
  • 박연수 (강원도 축산기술연구센터) ;
  • 홍성구 (농촌진흥청 국립축산과학원)
  • 투고 : 2010.07.22
  • 심사 : 2010.10.08
  • 발행 : 2010.10.31
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초록

본 연구는 거세, 월령별 적정 사료 급여관리 및 아미노산 강화 반추위 보호지방산(ruminally protected amino acid-enriched fatty acid, RPAAFA)의 급여가 당대검정 탈락축의 산육능력 및 육질 향상에 미치는 영향을 조사하기 위해서 수행되었다. 당대검정 탈락축은 생후 14개월령에 거세를 실시하였다. 시험구 배치는 거세 한우 16두(15개월령, 평균 체중 $412.9{\pm}24.9kg$)를 12개월 동안 RPAAFA를 급여하지 않는 대조구(control) 및 100g 급여하는 처리구(treatment)의 2처리로 완전임의 배치하였다. 거세한우는 생후 27월령에 도축하였다. 대조구에 비해 처리구의 일당증체량이 높은 경향을 보였으며, 사료요구율은 낮은 경향이었다. RPAAFA의 급여가 배최장근단면적, 등지방두께, 육색, 지방색, 조직감 및 성숙도에 미치는 영향은 없었다. 육량 A등급 및 육질 l등급 이상의 고급육 출현률은 대조구에 비해 처리구에서 높은 경향이었다. 배최장근의 수분, 지방, 단백질 및 회분 함량은 처리간 유사한 수준이었다. RPAAFA의 급여가 배최장근의 보수력, 산화환원전위, 총육색소 및 지방산 함량에 미치는 영향은 없었다. 따라서 거세, 적정 사료급여 관리 및 RPAAFA의 급여는 당대검정 탈락축의 산육능력 및 육질등급 향상에 긍정적인 영향을 미치는 것으로 사료된다.

This study was conducted to investigate the growth performance and meat quality improvement according to castration, optimal feeding management and ruminally protected amino acid-enriched fatty acid (RPAAFA) for the unselected Hanwoo bulls in the performance test. Bulls were castrated at approximately 14 months of age. Sixteen Hanwoo steers, 15 months of age and weighing $412.9{\pm}24.9kg$, were distributed into 2 groups. Steers were fed a basal diet supplemented with RPAAFA at 0 g (control) or 100 g (treatment), respectively for 12 months. Steers were slaughtered at 27 months of age. Average daily gain for treatment tended to be higher (p=0.10) than that of control, whereas feed conversion ratio tended to be lower (p=0.07) in treatment than in control. The supplementation of RPAAFA did not affect rib eye area, back fat thickness, meat color, fat color, texture and maturity. The appearance rates of yield 'A' grade and high quality grade ($1^{++}$, $1^+$ and 1) were higher in treatment than in control. The content of moisture, fat, protein and ash in longissimus muscles were similar between control and treatment. The supplementation of RPAAFA did not affect water-holding capacity, oxidation and reduction potential, myoglobin and fatty acid contents in longissimus muscles. Thus, present results indicate that castration, optimal feeding management and RPAAFA may be recommended for improving growth performance and quality grade of the unselected Hanwoo bulls in the performance test.

키워드

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피인용 문헌

  1. Comparison of Growth Performances and Physico-chemical Characteristics of Hanwoo Bulls and Steers of Different Slaughtering Ages vol.31, pp.2, 2011, https://doi.org/10.5851/kosfa.2011.31.2.257