Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Screening of Chicken Genes Related to Germ Cell Development

닭에서 생식세포 발달에 관여하는 유전자 검색

  • Lee, Jee-Young (School of Agricultural Biotechnology, Seoul National University) ;
  • Kim, Hee-Bal (School of Agricultural Biotechnology, Seoul National University) ;
  • Kim, Duk-Kyung (School of Agricultural Biotechnology, Seoul National University) ;
  • Song, Ki-Duk (Biotechnology Institute, Hanlim Human Tower) ;
  • Lim, Jeong-Mook (School of Agricultural Biotechnology, Seoul National University) ;
  • Han, Jae-Yong (School of Agricultural Biotechnology, Seoul National University)
  • 이지영 (서울대학교 농업생명과학대학) ;
  • 김희발 (서울대학교 농업생명과학대학) ;
  • 김덕경 (서울대학교 농업생명과학대학) ;
  • 송기덕 (아비코아 생명공학연구소) ;
  • 임정묵 (서울대학교 농업생명과학대학) ;
  • 한재용 (서울대학교 농업생명과학대학)
  • Published : 2007.04.30
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Abstract

We examined the expression patterns of the chicken TCs(tentative consensus sequences) originated from GermOnline genes in various chicken tissues, applying information from GermOnline to chicken organisms. 42 TCs among 84 chicken homologous TCs from the pool of 84 genes related to germ cell lineage in mouse(10), rat(71) and human(3) had high homology based on a BLAST search. Of these, Hmgcs2 and Sycp3 was shown to be expressed in a testis- specific manner and a reproductive organ(testis and ovary)-specific manner, respectively, by RT- PCR analysis. Crmp4, Cyct, Ldhc, Epha7, Pcsk4 and Dnmt3a are expressed in brain, testis, and ovary. The characterization of chicken genes originated from GermOnline in this research may give an enormously useful source of information related to germ cell development.

본 연구는 한우에서 이유시 체중과 도체형질들 간의 상관관계를 구명하고자 실시하였다. 조사된 도체 형질은 배최장근 단면적, 등지방두께, 21단계로 구분하여 평가한 근내지방도(근내지방도 I)와 7단계로 구분하여 평가한 근내지방도(근내지방도 II), 그리고 7단계로 구분하여 평가한 육색 등이었다. 유전모수의 추정은 DFREML 방법을 적용하여 실시하였는데 이유시 체중에 대한 통계모형은 동기우 그룹효과(년도－계절－성) 외에 이유시 송아지 일령 및 어미소 일령의 1차식 효과와 2차식 효과를 고정효과로 포함하였고 개체효과를 임의효과로 포함하였다. 도체형질에 대한 통계 모형은 동기우 그룹효과(년도－계절－성) 외에 도축시 일령의 일차식 효과를 고정효과에 포함하였고 개체효과를 임의효과로 포함하였다. 조사된 형질별 유전력 추정치는 이유시 체중이 0.25, 배최장근 단면적이 0.20, 등지방두께가 0.20, 근내지방도Ⅰ이 0.32, 근내지방도 Ⅱ가 0.32 그리고 육색이 0.22였다. 이유시 체중과 배최장근 단면적, 등지방두께, 근내지방도 I, 근내지방도 II 및 육색 간의 유전(표현형) 상관계수는 각각 0.75(0.16), 0.18(0.05), －0.41(－0.09), －0.40(0.11) 및 －0.07(0.05)였다. 본 연구 결과는 이유시 체중이 무거운 방향으로 단형질 선발을 진행할 경우 등심단면적이 넓어지고, 등지방두께가 두꺼워지며 근내지방도가 감소하는 도체를 생산하는 후손집단이 형성될 가능성이 있음을 시사하고 있다.

Keywords

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