http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
유전적 개량 극대화를 위한 유우 및 육우의 이상적인 후대검정두수
전광주(G . J . Jeon),김형철(H . C . Kim),나기준(K . J . Na),조병대(B . D . Cho) 한국축산학회 1995 한국축산학회지 Vol.37 No.3
Optimum number of progeny for given capacities of progeny test size was examined by deterministic models using various levels of heritabilities and population sizes. The theoretical maximum genetic improvement is possible by maximizing the function of selection accuracy, selection intensity, and genetic variation of the traits of interest. To estimate the optimal progeny test breeding schemes. The elements in the function of genetic response are interrelated. And thus, the algorithm used in this study was that the implicit equation was solved iteratively. The results suggested that for an economic trait with heritability of 0.3, given the size of progeny test station with 3,000 breeding females and 33 proven sires to be selected annually, the optimum number of young bulls to be progeny tested was 100 and the number of progeny per bull was 10.
Gene Flow 방법을 이용한 점근선적 선발반응 추정
전광주 ( G . J . Jeon ) 한국축산학회 1992 한국축산학회지 Vol.34 No.4
The use of the gene flow method was illustrated using a simple numerical example in this work. The main advantage of the gene flow method is an ability to monitor the entire trend of genetic progress during a given time horizon for a breeding scheme. The use of gene flow model is useful and effective for the estimation of selection response especially when a time horizon of a breeding plan is short. And the gene flow model also can be easily extended to any general breding population of all livestock species.
전광주(G . J . Jeon),김태산(T . S . Kim) 한국축산학회 1994 한국축산학회지 Vol.36 No.3
Estimation of linkage between QTL and genetic markers was illustrated using simulated data by the ML method. The application of the ML method was sraight forward. For a given density function, the likelihood function was evaluated at each round of iteration within the parameter space. After iterations were completed, the largest value of likelihood was the point at which the likelihood converged. The magnitude of h² did not show any significant effect on the estimation of linkage between QTL and markers. However, the additive effect of marker allele had a significant effect on the estimation of r. As the value of marker allele was larger, the linkage was underestimated. Since the dominance effect was not considered in the simulation, further investigation is needed to find possible interactions between the magnitude of the dominance. effect and marker effect.
Microsatellite Marker를 이용한 한우 브랜드 집단의 유연관계와 유전적 구조 분석
오재돈,공홍식,이제현,문선정,전광주,이학교,Oh, J.D.,Kong, H.S.,Lee, J.H.,Moon, S.J.,Jeon, G.J.,Lee, H.K. 한국축산식품학회 2007 한국축산식품학회지 Vol.27 No.3
Nine brand populations of Hanwoo cattle were characterized using 11 microsatellite DNA markers. The studied populations were: Ansung, Yangpyang, DaeGwanryeng, Palkongsangkangwoo, Hoengseong, Jangsu, Sumjinkang, Hadong, Nam-hae. The observed heterozygosity, expected heterozygosity, and polymorphism information content were calculated. Allele frequencies were calculated and used for the characterization of each brand population and to study their genetic relationships. Genetic distances were estimated using Nei's DA genetic distance and the resultant DA matrix was used in the construction of phylogenetic trees. The NJ tree showed that Ansung and Yangpyang, Sumjinkang and Jangsu, Namhae and Ha-Dong are closely related and are considered to have undergone genetic exchange within the same locale. This study will contribute to the local Hanwoo brand industry.
생체에서 초음파 측정기를 이용한 한우 도체형질의 추정에 관한 연구
김형철(H . C . Kim),전광주(G . J . Jeon),나기준(K . J . Na),유영모(Y . M . Yoo),정재경(J . K . Chung) 한국축산학회 1995 한국축산학회지 Vol.37 No.4
The carcass traits in live Hanwoo were estimated using the ultrasonic color scanning scope. A total number of 229 bull and steer records were measured. The data were collected for two years from 1992 to 1993. `Ihe estimates of backfat thickness using ultrasonic measurement from live animals for bulls and steers were 0.5㎝ and 0.91㎝, respectively, and those of slaughter measurement were 0.48㎝ and 0.91㎝, correspondingly. And also, the similar results were found for eye muscle area(EMA). The blue dot percentage indicating the marbling score tended to increase from 18 month of age to 21 month of age. The prediction equation using the linear regression were highly accurate for meat quantity(R²=0.91 to 0.93) but was less accurate for meat quality(R²=0.4).
한우와 Charolais 교잡종의 체중에 대한 상가적 및 잡종강세효과의 추정
나기준(K . J . Na),전광주(G . J . Jeon),김형철(H . C . Kim),조병대(B . D . Cho),이근상(K . S . Lee) 한국축산학회 1995 한국축산학회지 Vol.37 No.2
The additive and heterosis effects on body weights between Hanwoo(Korean cattle) and crossbreeds from Charolais x Hanwoo were estimated. The data were recorded from 1979 to 1991 in Kangwha area and were analysed by using linear regression models. The estimated least squares means on body weights of Hanwoo were 85.4±4.6 ㎏ at 3 months of age. 150.2±6.9 ㎏ at 6 months of age and 258.5±11.4 ㎏ at 12 months of age, respectively. The body weights of the crossbreeds ranged from 117.1 to 126.3㎏ at 3 months of age, from 192.0 to 216.8 ㎏ at 6 months of age, and from 352.6 to 383.4 ㎏ at 12 months of age, respectively. The additive effects on body weight were 45.59±6.37 ㎏ at 3 months of age, 78.75±10.13 ㎏ at 6 months of age and 136.27±17.69 ㎏ at 12 months of age. The effects of heterosis were 7.65±3.89 ㎏ at 3 months of age, 21.35±6.09 ㎏ at 6 months of age and 47.47±10.92 ㎏ at 12 months of age, respectively.
한국 재래 닭 품종 특성 및 초기성장 개량을 위한 분자표지 개발
오재돈,박미현,공홍식,이학교,전광주,연성흠,상병돈,최철환,조병욱,Oh J. D.,Park M. H.,Kong H. S.,Lee H. K.,Jeon G. J.,Yeon S. H.,Sang B. D.,Choi C. H.,Cho B. W. 한국가금학회 2005 韓國家禽學會誌 Vol.32 No.1
This study was conducted to estimate the effects of genotype for chicken major histocompatibility complex (MHC) B-LB genes on economic traits. To detect polymorphism, 400 bp fragments of MHC B-LB genes were obtained and sequenced. After digestions using restriction enzyme Hea III, two restriction enzyme sites were observed. There were two mutations at position 427 and 651 those were decided as Type I and Type II, respectively. Using RFLP analyses, type I were genotyped to TT, TC and CC, and type II to MM, Mm and mm. The relatively higher TC genotype frequencies (0.8) of Type I and Mm genotype frequencies (0.88) of Type II were observed in Korean native chickens. The effects of the genotype on 150 days body weight trait were investigated by the associations of CC and Mm genotypes (P<0.05) in Korean native chickens. This result suggests that a significant association exists between the SNP and 150 days body weight. 본 연구는 한국 재래 닭의 유전적 특성을 분자표지를 이용하여 그 차이를 규명하고 초기성장에 미치는 영향을 분석하여 이를 이용한 재래닭의 개량을 목적으로 실시하였다. MHC class II B-LB 유전자 내의 염기변이체가 경제형질에 미치는 영향에 대하여 연구하였다. MHC class II B-LB유전자 내 400 bp 크기의 유전자를 증폭하여 염기서열 분석과 제한효소 처리를 이용한 다형성 분석을 실시하였다. 연구결과 두 개의 제한효소 절단지역이 발견되었으며 427 지역을 Type I 으로 651 지역은 Type II로 정하여 RFLP 분석을 실시하였다. Type I지역의 유전자형은 TT, TC, CC로 나타났으며, TypeII 지역의 유전자형은 MM, Mm, mm으로 나타났다. TC와 Mm 유전자형이 다른 유전자형과 비교하였을 때 한국재래 닭에서 높은 출현빈도를 보였다(0.8, 0.88). 유전자형이 한국 재래 닭의 150일령 체중에 미치는 영향을 분석한 결과 CC와 Mm 유전자형에서 통계적 유의성이 도출되었다 (P<0.05). 따라서 본 연구의 결과를 이용하여 한국 재래 닭의 유전적 특성을 규명할 수 있으며 초기 성장이 높은 성적을 나타내는 CC, Mm 유전자형을 개량에 이용하게 된다면 큰 효과를 얻을 수 있을 것으로 사료되어진다. 본 연구의 결과는 차후 한국 재래 닭의 과학적이고 지속적인 유전자원의 보존과 육종 전략에 있어 매우 유용하게 활용될 것으로 기대된다.