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한국 재래계와 백색 레그혼 토착종의 주요 경제형질간 상관관계 비교
김영신 ( Young Sin Kim ),변미정 ( Mi Jeong Byun ),서상원 ( Sang Won Suh ),김재환 ( Jae Hwan Kim ),조창연 ( Chang Yeon Cho ),조영무 ( Young Moo Cho ),이지웅 ( Ji Woong Lee ),최성복 ( Seong Bok Choi ) 한국국제농업개발학회 2015 韓國國際農業開發學會誌 Vol.27 No.1
The objective of this study was to compare the correlation on major economic traits at growing and laying stage for Korean Native Chicken and Korean White Leghorn. Total number of chicks analyzed in this study was 110 and divided by Korean Native Chicken (A, B) and Korean White Leghorn (C, D). The days at first egg in Korean Native Chicken was 155 days which was 16 days longer than those of Korean White Leghorn (p < 0.05). Egg weight at first egg in Korean White Leghorn was 42.68 g which was heavier than those of Korean Native Chicken to be 35.04 g (p < 0.05). Egg weight at 270 days of age in Korean White Leghorn was also 12.93 kg heavier than those of Korean Native Chicken (p < 0.05). The phenotypic correlation coefficients between an increased amount of shank length and body weight gain were 0.61 ~ 0.66 from 0 ~ 4 weeks of age through 0 ~ 12 weeks of age in Korean Native Chicken and were 0.60 ~ 0.77 from 0 ~ 4 weeks of age through 0 ~ 8 weeks of age in Korean White Leghorn. The phenotypic correlation coefficients among body weight gain, age at first egg, egg weight at 270 days of age, or shank length were highly positive until 0 ~ 12 weeks of age in Korean Native Chicken and were also highly positive until 0~8 weeks of age in Korean White Leghorn. Therefore these results indicated that the age for indirect selection on hens should be at 12 weeks of age for Korean Native Chicken and at 8 weeks of age for Korean White Leghorn. Overall performance during growing and laying stage in Korean Native Chicken was somewhat less than those of Korean White Leghorn. However, each of them has their own characteristics as native genetic resources and should be applied as the evaluation criteria of a native genetic resource.
유전 및 육종 : mtDNA Cytochrome b 유전자에 기초한 한국재래염소의 계통유전학적 분석
김재환 ( Jae Hwan Kim ),변미정 ( Mi Jeong Byun ),고응규 ( Yeoung Gyu Ko ),김성우 ( Sung Woo Kim ),김상우 ( Sang Woo Kim ),도윤정 ( Yoon Jung Do ),김명직 ( Myung Jick Kim ),윤세형 ( Sei Hyung Yoon ),최성복 ( Seong Bok Choi ) 한국동물자원과학회(구 한국축산학회) 2012 한국축산학회지 Vol.54 No.4
한국재래염소의 계통유전학적 위치를 확인하기 위해서 한국재래염소 4개 집단 48두를 공시한 후 mitochondrial DNA(mtDNA) 내부의 cytochrome b 유전자의 전체서열을 분석하였다. 또한 이 서열들을 이용하여 한국재래염소의 유전적 다양성을 확인하였고, 다른 나라의 여러 염소품종들과의 계통유전학적 분석을 수행하였다. 한국재래염소 cytochrome b 유전자 서열을 토대로 3개의 염기변이가 동정되었으며, 그 중 2개는 아미노산 치환을 일으키는 missense 변이로 확인되었다. 또한 4개의 haplotype으로 분류되었는데, 이 중 3개는 중국 재래염소 품종에서도 나타났으나 다른 나라의 품종에서는 확인되지 않았다. 계통유전학적 분석 결과 모든 재래흑염소는 4개의 clade를 형성하였으나, 5개의 야생염소와는 독립적인 그룹을 형성하였다. 한국재래염소는 mtDNA D-loop에 분류되는 여러 모계혈통 중 모계혈통-A로 추정되는 clade 1에 포함되었다. 한국재래염소에서 보여진 각각의 haplotype은 중국 재래염소품종들과 상대적으로 가까운 유전적 유연관계를 보였다. 기존 연구결과와 본 연구의 분석결과를 종합해보면 과거에 일부 중국 재래염소품종이 한반도로 유입되어 한국재래염소의 기원 및 가축화에 영향을 주었을 것으로 사료된다. The goal of this study was to verify the phylogenetic status of the Korean native goats(KNG). We determined the complete sequence of the mitochondrial cytochrome b gene in 48 goats among four populations. We also analyzed genetic variability within goats, and a phylogenetic analysis was performed by comparison with other country`s goats. Three nucleotide substitutions were detected, and two of these were missense mutations that occurred due to a substitution of amino acid. Four haplotypes were defined from KNG. Three of these haplotypes were only found in the Chinese goat. However, the other haplotype was KNG-specific. In the phylogenetic analysis, four clades(A~D) were classified among domestic goats, and the KNG was classified into clade 1 that estimated as lineage A based on the D-loop sequence. Each haplotype from the KNG was clustered closely with that of the Chinese goat. The results of haplotype distribution and phylogenetic location suggest that strong gene flow occurred from China to the Korean Peninsula.
초위성체 다형성을 이용한 제주재래돼지 및 외래 돼지품종간의 유전적 특징 및 유연관계 분석
서상원 ( Sangwon Suh ),조창연 ( Chang Yeon Cho ),변미정 ( Mi Jeong Byun ),김영신 ( Young Sin Kim ),최성복 ( Seong Bok Choi ),조인철 ( In Chul Cho ),배경훈 ( Kyoung Hun Bae ),김재환 ( Jae Hwan Kim ) 한국국제농업개발학회 2015 韓國國際農業開發學會誌 Vol.27 No.2
Effective management of unique animal genetic resources, such as local breeds, is one of the most important concerns in modern breeding. In the present study, 30 microsatellite loci were analyzed to evaluate the genetic diversity, population structure, and relationships among Jeju native and exotic pig breeds. In total, 200 animals from four pig breeds (Jeju native, Landrace, Yorkshire and Berkshire) were analyzed, 50 individuals per breed. Overall, 265 alleles were observed. The mean expected and observed heterozygosity (HExp and HObs) and polymorphism information content (PIC) of Jeju native pig were calculated at 0.550, 0.565, and 0.485, respectively. However, exotic breeds were higher level of these diversity parameters than those of Jeju native pig. Phylogenetic analysis, factorial component analysis (FCA), and genetic clustering results showed a clear distinction among the four groups representing the breeds, supporting the genetic uniqueness of the Jeju native breed in comparison with Western commercial breeds. These results were scientific evidence that Jeju native pig represent a unique and valuable animal genetic resource.
번식생리 및 내분비 : 한국재래닭(오계) 원시생식세포의 완만동결과 급속동결의 비교
김성우 ( Sung Woo Kim ),고응규 ( Yeoung Gyu Ko ),변미정 ( Mi Jeong Byun ),도윤정 ( Yoon Jung Do ),한재용 ( Jae Yong Han ),김동훈 ( Dong Hun Kim ),성환후 ( Hwan Hoo Seong ),김현 ( Hyun Kim ) 한국동물자원과학회(구 한국축산학회) 2013 한국축산학회지 Vol.55 No.5
We sought to provide a method for freezing and preserving primordial germ cells, or an avian germ cell of a bird, as a material for developmental engineering or species preservation. The aim of this study was to compare the efficacy of slow freezing with a vitrification method for the cryopreservation of chicken primordial germ cells(PGCs). PGCs obtained from the germinal gonad of day 5.5-6 day(stage 28) cultured chick embryos, using the MACS method, were classified into two groups: slow freezing and vitrification. We examined the viability of PGCs after Cryopreservation. Four freezing methods were compared with each other, including the following: Method 1: The PGCs were frozen by a programmed freezer in a plastic straw, including 2.0M ethylene glycol(EG) as cryoprotective additive(slow freezing) Method 2: The PGCs were vitrified in a plastic straw, including 8.0 M EG, plus 7% polyvinylpyrrolidone(PVP)(rapid freezing). Method 3: The slow freezing was induced with a cryotube including 2.0 M EG Method 4: The PGCs were frozen in a cryotube including 10% dimethyl suloxide(DMSO)(rapid freezing). After freezing and thawing, survival rates of the frozen-thawed PGCs from Method 1 to 4were 76.4%, 70.6%, 80.5% and 78.1%(p<0.05), respectively. The slow freezing(-80℃ programmed freezer) method may provide better survival rates of frozen-thawed PGCs than the vitrification method for the cryopreservation of PGCs. Therefore, these systems may contribute to the cryopreservation of a rare avian species.