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Productivity and Meat Quality of the New Crossbred Korean Native Chickens Compared with Commercial Breeds

신품종 교배조합 토종닭의 생산성과 육질 및 시판 품종과의 비교분석

  • Kim, Hyun Cheol (Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University) ;
  • Choe, Juhui (Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University) ;
  • Nam, Ki Chang (Department of Animal Science and Technology, Sunchon National University) ;
  • Jung, Samooel (Division of Animal and Dairy Science, Chungnam National University) ;
  • Jo, Cheorun (Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute of Agriculture and Life Sciences, Seoul National University)
  • 김현철 (서울대학교 농생명공학부, 식품바이오융합연구원 및 농업생명과학연구원) ;
  • 최주희 (서울대학교 농생명공학부, 식품바이오융합연구원 및 농업생명과학연구원) ;
  • 남기창 (순천대학교 동물자원과학과) ;
  • 정사무엘 (충남대학교 동물자원과학부) ;
  • 조철훈 (서울대학교 농생명공학부, 식품바이오융합연구원 및 농업생명과학연구원)
  • Received : 2018.05.28
  • Accepted : 2018.06.26
  • Published : 2018.06.30

Abstract

This study was conducted to evaluate the productivity and meat quality of three newly-developed crossbreds of Korean native chicken (2A, 2C, and 2D) as compared with commercial Korean native chicken (CKNC) and commercial broiler. Totally, 400 birds of different crossbreds were randomly allotted to eight pens, each with 50 birds. The birds were reared ad libitum and slaughtered at the age of 12 weeks. Fifty male chickens were slaughtered at the same day in the same slaughterhouse were selected for the comparison of meat quality. The crossbred 2C had greater body weight than that of CKNC (P<0.05), and had similar uniformity with lower death rate. Although shank length of 2C was the longest among the Korean native chicken breeds, the ratio of shank length to body weight was the lowest among them (P<0.05). The crossbred 2C had similar inosine 5'-monophosphate (IMP) content as that of CKNC in breast meat, and the highest IMP content in thigh meat (P<0.05). In a sensory analysis, the crossbred 2C generally showed, similar savory taste and texture as that of CKNC, and the overall acceptability of thigh meat was the highest in CKNC and broiler. Based on the present results, the possibility of commercialization of a newly-developed crossbred of Korean native chicken was confirmed.

상용 토종닭과 신품종 교배조합 토종닭 3종을 같은 조건 아래 12주령까지 사육한 후 생산성을 비교하여 신품종 종계의 시장출시 가능성을 확인하였다. 또한 상용 토종닭, 신품종 교배조합 토종닭 3종을 시판되는 브로일러와 육질특성을 비교하였다. 생산성에서 신품종 교배조합 토종닭 2C가 기존의 상용토종닭과 비교하여 수컷에서는 생산성이 뛰어났고, 암컷에서는 차이를 보이지 않았으며, 균일도는 비슷하게 나타났다. 또한 사료요구율 및 폐사율이 낮게 나타나 전반적으로 우수하였다. 정강이의 길이는 신품종 교배조합 토종닭 2C가 가장 길었으나, 생체중과 정강이 길이의 비율로 환산하면 가장 낮게 나타났다. 계육의 일반성분에서는 상용토종닭 및 신품종 교배조합 토종닭 간 차이를 나타내지 않았으나, 브로일러와 비교할 때 가슴육에서 수분이 높고, 다리육에서 조단백질 함량이 높았다. 또한 pH는 브로일러, 상용토종닭, 신품종 교배조합 토종닭 2C, 2D, 2A의 순으로 나타났다. 가슴육 내 핵산관련물질은 브로일러가 신품종 교배조합 토종닭에 비해 가슴육 내 AMP, inosine, hypoxanthine이 높았고 IMP는 낮았다. 교배조합 간에서는 IMP 함량이 상용토종닭, 2A, 2C, 2D 순으로 높음을 보였다. 다리육의 핵산물질 함량도 신품종 교배조합 토종닭 2A 및 2C, 상용 토종닭, 2D의 순서로 IMP가 높게 나타났다. 가슴육의 지방산 조성은 상용토종닭과 신품종 교배조합 토종닭이 브로일러에 비해 아라키돈산(C20:4)과 다가불포화지방산(PUFA)이 높게 나타났으며, 올레인산(C18:1)과 불포화지방산 조성이 낮게 나타났다. 관능평가 결과, 신품종 교배조합 토종닭 2C는 전체적으로 더 고소하고 쫄깃하며 기호도 평가 또한 뛰어났으며, 가슴육은 비린내가 덜 하고, 다리육은 기호도 평가에서 신품종 교배조합 토종닭뿐 아니라, 상용토종닭과 브로일러보다도 우수하여 신품종 교배조합 토종닭 2C의 시장 가능성을 확인하였다.

Keywords

References

  1. Ahn DH, Park SY 2002 Studies on components related to taste such as free amino acids and nucleotides in Korean native chicken meat. J Korean Soc Food Sci Nutr 31(4):547-552. https://doi.org/10.3746/jkfn.2002.31.4.547
  2. AOAC 1995 Official Methods of Analysis. 13th ed. Association of Official Analytical Chemists, Washington DC, USA.
  3. Choe JH, Nam KC, Jung S, Kim BN, Yun HJ, Jo C 2010 Differences in the quality characteristics between commercial Korean native chickens and broilers. Korean J Food Sci An 30(1):13-19. https://doi.org/10.5851/kosfa.2010.30.1.13
  4. Jayasena DD, Ahn DU, Nam KC, Jo C 2013 Flavour chemistry of chicken meat: A review. Asian Australas J Anim Sci 26(5):732-742. https://doi.org/10.5713/ajas.2012.12619
  5. Jung S, Bae YS, Kim HJ, Jayasena DD, Lee JH, Park HB, Jo C 2013 Carnosine, anserine, creatine, and inosine 5'-monophosphate contents in breast and thigh meats from 5 lines of Korean native chicken. Poult Sci 92(12):3275-3282. https://doi.org/10.3382/ps.2013-03441
  6. Jung S, Bae YS, Yong HI, Lee HJ, Seo DW, Park HB, Lee JH, Jo C 2015 Proximate composition, and l-carnitine and betaine contents in meat from Korean indigenous chicken. Asian Australas J Anim Sci 28(12):1760-1766. https://doi.org/10.5713/ajas.15.0250
  7. Ki HB, Seung GL, Dicky U, Byoung KA, Sung KL 2017 Meat qualities and functional properties of broiler and spent layers slaughtered at different ages. Korean J Poult Sci 44:41-49. https://doi.org/10.5536/KJPS.2017.44.1.41
  8. KOSTAT (Korea statistics) 2017 http://kostat.go.kr/
  9. Lee KH, Jung YK, Jung S, Lee JH, Heo KN, Jo C 2011 Physiochemical characteristics of the meat from Korean native chicken and broiler reared and slaughtered as the same conditions. Korean J Poult Sci 38(3):225-230. https://doi.org/10.5536/KJPS.2011.38.3.225
  10. Lee KH, Kim HJ, Lee HJ, Kang MG, Jo C 2012 A study on components related to flavor and taste in commercial broiler and Korean native chicken meat. Korean J Food Preserv 19(3):385-392. https://doi.org/10.11002/kjfp.2012.19.3.385
  11. Lee MJ, Heo KN, Choi HC, Hong EC, Kim CD 2014 The performance test in crossbreds of Korean native chickens for the establishment of new lines. Korean J Poult Sci 41(1):39-44. https://doi.org/10.5536/KJPS.2014.41.1.39
  12. O'fallon JV, Busboom JR, Nelson ML, Gaskins CT 2007 A direct method for fatty acid methyl ester synthesis: Application to wet meat tissues, oils, and feedstuffs. J Anim Sci 85(6):1511-1521. https://doi.org/10.2527/jas.2006-491
  13. Park MN, Hong EC, Kang BS, Kim HK, Kim JH, Na SH, Chae HS, Seo OS, Han JY, Jeong JH, HwangBo J 2010 Chemical composition and meat quality of crossbred Korean native chickens (KNC). Korean J Poult Sci 37(4):415-421. https://doi.org/10.5536/KJPS.2010.37.4.415
  14. Shin TK, Wickramasuriya SS, Kim E, Cho HM, Heo JM, Yi YJ 2017 Comparative study of growth performances of six different Korean native chicken crossbreeds from hatch to twelve weeks of age. CNU J Agric Sci 44(2):244-253.
  15. Yoo J, Koo B, Kim E, Heo JM 2015 Comparison of growth performance between crossbred Korean native chickens for hatch to 28 days. CNU J Agric Sci 42(1):23-27.