버크셔종의 육질형질에 대한 유전모수 추정
Genetic Parameter Estimates for Meat Quality Traits in Berkshire Pigs
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초록
본 연구는 2004년~2008년에 미국에서 도입한 버크셔종의 육질형질에 대한 유전적 특성을 파악하고, 향후 선발에 이용한 유전적 그룹(genetic group)을 분리하여 선발 및 교배계획을 체계적으로 세워 효과를 극대화시키는 전략을 세우고자 수행하였다. 그 결과 사후 대사율의 척도인 근육의 사후 45분 pH, 24시간 pH에 대한 유전력은 각각 0.60과 0.61로 높게 조사되었다. 육색의 척도인 명도, 적색도 및 황색도의 유전력은 0.56, 0.58 및 0.62로 조사되었다. 근내지방도, 유리육즙량과 가열감량에 대한 유전력은 각각 0.57, 0.51 및 0.66으로 조사되었다. 본 연구 결과로 미루어 볼 때 육질형질의 개량에 있어 육종가를 기초로 하여 선발에 활용할 경우 유전적 개량량은 크게 나타날 것으로 사료된다. 또한 사후 대사율의 척도인 pH와 육질형질과의 상관도는 높은 연관성이 존재하므로, 종돈장에서 육질형질을 개량하고자 한다면 육종가를 기반으로 한 선발지수(selection index)를 활용하면 매우 효과적일 것으로 필자는 사료된다. 그러나 본 연구에 활용된 자료는 유전모수를 추정하는데 다소 부족한 것은 사실이지만 국내 최초로 돼지의 육질형질에 대한 유전모수를 추정하는데 있어 매우 의미가 있다고 할 수 있다.
Abstract
Swine industry in Korea plays an important role in providing the meat for domestic consumption, and the number of pigs in Korea was about 9.72 million heads as of June, 2010. Meat quality is used to describe any traits which impact the consumer acceptability of fresh meat products. Meat color, firmness, water holding capacity, ultimate muscle pH_(24h)(measured 24 hours post-mortem), shear force, and intramuscular fat percentage(IMF) are generally accepted as important indicators of meat quality and ultimately, consumer acceptance of fresh pork. The objective of this study was to estimate genetic parameters for meat quality traits in Berkshire pigs. The heritability estimates for muscle pH_(24h), lightness(CIE L^*), NPPC marbling were 0.61, 0.56 and 0.57, respectively, The heritability estimates for drip loss, cooking loss, shear force were 0.51, 0.66 and 0.56, respectively. The phenotypic correlations between pH24h and lightness(CIE L^*), drip loss, cooking loss were negative, ranging from －.45~－.13. The genetic correlations between muscle pH_(24h) and lightness(CIE L^*), drip loss were negative, ranging from －.35~－.32. Genetic parameters obtained herein indicate that genetic improvement of muscle pH_(24h) is not related to the NPPC marbling of meat, but rather to improved lightness(CIE L^*) and drip loss. Genetic trends of meat quality traits showed increased muscle pH_(24h) and decreased cooking loss and drip loss.
참고문헌 (20)
- Cameron,N.D, "Genetic and phenotypic parameters for carcass traits, meat and eating quality traits in pigs", Livest. Prod. Sci, 26, pp.119~135 (1990)
- Christian, L. L, "Performance and carcass characteristic of normal, stress-carrier, and stress-susceptible swine. Publication AS-528-F" (1991), Iowa State University Cooperative Exstension Service, Ames
- Cliplef, R. L, "Carcass quality characteristics of swine selected for reduced backfat thickness and increased growth rate", Can. J. Anim. Sci, 73, pp.483~494 (1993)
- DeVol, D. L, "Variation in composition and palatability traits and relationships between muscle characteristics and palability in a random sample of pork carcasses", J. Anim. Sci, 66, pp.385~395 (1988)
- Gibson, J. P, "Omtario Swine Improvement Inc", Omtario Pork Carcass Appraisal Project Symposium (1998)
- Goodwin,R.N, "Genetic parameters of pork quality traits", 박사, pp.1994
- Honikel,K.O, "The influence of chilling on meat quality attributes of fast glycolysing pork muscle. In Evaluation and control of meat Quality in Pigs", pp.273~284 (1997)
- Hovenier, R, "Genetic parameters of pig meat quality traits ina halothane negative population", Livest. Prob. Sci, 32, pp.309~321 (1992)
- Hovenier, R, "Breeding for pig meat quality in halothane negative populations-A review", Pig News inf, 14, pp.17N~25N (1993)
- Huff-Lonergan, E, "Correlations among selected pork quality traits", J. Anim. Sci, 80, pp.617~627 (2002)
- Knapp, P, "Genetic parameters for lean meat content and meat quality traits in different pig breeds", Livest. Prob. Sci, 52, pp.69~73 (1997)
- Larzul, C, "Phenotypic and genetic parameters for longissimus muscle fiber characteristics in relation to growth carcass, and meat quality traits in Large White pigs", J. Anim. Sci, 75, pp.3126~3137 (1997)
- Meyer, K, "Restricted Maximum Likelihood(REML) programs for the analysis of animal breeding data", workshop in Orange, NSW, March 2–-6, 1987. Mimeo (1987)
- Meyer, K, "Estimation of variance components for Individual Animal Models II. Multivariate analyses", Genet. Sel. Evol (1988)
- Sellier,P, "Genetic of meat and carcass traits. in The Genetics of the Pigs", pp.463~510 (1998), CAB Int, New York, NY
- Sellier, P, "Breed identificatrion and development in pigs. In; K. Maijala (ed.) Genetic resources Elsevier" (1991), Genetic resources Elsevier Science Publishier, Amsterdam, The Netherlands
- Sellier, P, "Genetics of Meat Quality; A review", J. Muscle Foods, 5, pp.187~219 (1994)
- Stalder, K. J, "Effectrs of preslaughter management on the quality of carcasses from porcine sterss syndrome heterozygous marker hogs", J. Anim. Sci, 76, pp.2435~2443 (1998)
- Suzukim, K, "Genetic parameter estimates of meat quality traits in Duroc pigs selected for average daily gain, longissmus muscle area, backfat thickness, and intramuscular fat content", J. Anim. Sci, 83, pp.2085~2065 (2005)
- Warriss, P. D, "the effect of time and condition of trasport and lairge on pig meat quality. In Evaluation and Control of Meat Quality in Pigs", pp.245~264 (1997)