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RISS 인기검색어
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- 저자 : 박희복 ( Hee Bok Park ) (검색결과 23 건)
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제주재래흑돼지와 랜드레이스 F<sub>2</sub> 교배축군의 생체중에 대한 유전체와 가계도 기반의 유전력 및 모체효과 추정
박희복,한상현,이재봉,김상금,강용준,신현숙,신상민,김지향,손준규,백광수,조상래,조인철,Park, Hee-Bok,Han, Sang-Hyun,Lee, Jae-Bong,Kim, Sang-Geum,Kang, Yong-Jun,Shin, Hyun-Sook,Shin, Sang-Min,Kim, Ji-Hyang,Son, Jun-Kyu,Baek, Kwang-Soo,Cho, 한국수정란이식학회 2016 한국동물생명공학회지 Vol.31 No.3
Growth traits, such as body weight, directly influence productivity and economic efficiency in the swine industry. In this study, we estimate heritability for body weight traits usinginformation from pedigree and genome-wide single nucleotide polymorphism (SNP) chip data. Four body weight phenotypes were measured in 1,105 $F_2$ progeny from an intercross between Landrace and Jeju native black pigs. All experimental animals were subjected to genotypic analysis using PorcineSNP60K BeadChip platform, and 39,992 autosomal SNP markers filtered by quality control criteria were used to construct genomic relationship matrix for heritability estimation. Restricted maximum likelihood estimates of heritability were obtained using both genomic- and pedigree- relationship matrix in a linear mixed model. The heritability estimates using SNP information were smaller (0.36-0.55) than those which were estimated using pedigree information (0.62-0.97). To investigate effect of common environment, such as maternal effect, on heritability estimation, we included maternal effect as an additional random effect term in the linear mixed model analysis. We detected substantial proportions of phenotypic variance components were explained by maternal effect. And the heritability estimates using both pedigree and SNP information were decreased. Therefore, heritability estimates must be interpreted cautiously when there are obvious common environmental variance components.
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제주재래흑돼지와 듀록 교배 세대에서 IDH3B 유전자형과 경제형질의 연관성
박희복(Hee-Bok Park),한상현(Sang-Hyun Han),강용준(Yong-Jun Kang),신문철(Moon-Cheol Shin),이재봉(Jae-Bong Lee),조인철(In-Cheol Cho) 한국생명과학회 2017 생명과학회지 Vol.27 No.3
제주재래흑돼지와 듀록의 교배 F2 집단에서 경제형질과 isocitrate dehydrogenase 3, beta subunit (IDH3B) 유전자의 유전자형의 연관을 시험하였다. IDH3B 유전자형은 promoter 영역에서 304-bp 삽입/결실 절편의 유무를 기준으로 기초축군과 F1, F2에서 판독하였다. 세 가지 유전자형(AA, AB, BB)이 F1과 F2에서는 모두 발견되었으나, JBP에서는 AA 유전자형이, Duroc에서는 BB 유전자형이 발견되지 않았다. 연관 분석결과에서 도체중(CW), 등지방두께(BFT)와 등심단면적(EMA)의 수준이 유전자형에 따라 유의적인 차이를 보였으나(p<0.05), 각기 다른 성장시기별로 측정된 체중들과 일당증체량을 포함한 성장형질, 유두수를 포함한 번식형질, 등심 내 조지방함량(CFAT)의 수준은 유의적인 차이가 없었다(p>0.05). IDH3B AA 동형접합자인 F2 돼지들은 다른유전자형을 보유한 개체들에 비해 도체중이 더 무겁고(72.92±11.133 kg), 등지방두께는 더 두껍고(25.75±6.06 mm), 등심단면적은 더 넓은 수준(23.82±4.825 cm2)을 보였다(p<0.05). 이상은 비육돈 생산 후기에 근내지방의 축적과 상관없이, 등심단면적, 등지방두께, 도체중의 증가가 IDH3B 유전자형과 연관된 생물학적 작용에 의한 결과라 하겠다. 돼지 IDH3B의 304-bp 삽입 대립 유전자는 제주재래흑돼지와 Duroc-관련 분자육종체계에서 돈육 생산성 향상을 위한 분자도움선발의 유전적 마커로 이용될 것으로 기대된다. This study examined the association between genotypes of the isocitrate dehydrogenase 3, beta subunit (IDH3B) gene and economic traits in an F2 population of Duroc and Jeju (South Korea) native black pigs (JBPs). The genotypes was determined the presence/absence of a 304-bp insertion/deletion fragment in the promoter region of the IDH3B gene for JBP, Duroc, and their F1 and F2 progeny. Three genotypes (AA, AB and BB) were found in the F1 and F2 populations, but there was no AA genotype found in JBP and no BB in Duroc. Association analysis results showed the significant differences with carcass weights (CW), backfat thicknesses (BFT) and eye muscle area (EMA) (p<0.05), but not with growth traits including body weights and average daily gains at different stages, reproductive traits including teat numbers, and crude fat contents (CFAT) measured in longissimus dorsi (p>0.05). The F2 pigs possessing the IDH3B BB homozygote had heavier CW (72.92±11.133 kg), thicker BFT (25.75±6.06 mm), and larger EMA (23.82±4.825 cm2) than those from the other genotypes (p<0.05). These results were estimated that there are biological roles related with IDH3B genotypes resulting development of EMA, BFT, and CW but not with intramuscular fat deposition during late period of pig production. Our findings suggest that the 304-bp insertion allele of porcine IDH3B may be a genetic marker for marker assistant selection for improving meat productivity of the Jeju Black pig and Duroc-related molecular breeding systems.
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