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제주도산 한우와 제주흑한우 집단의 도체형질에 대한 Lysophospholipase I (LYPLA1) 유전자형의 효과

Genotypes of Lysophospholipase I (LYPLA1) Gene Associate with Carcass Traits of the Jeju Crossbred Cattle (Hanwoo × Jeju Black cattle) and Hanwoo Populations

  • 한상현 (농촌진흥청 국립축산과학원 난지축산연구소) ;
  • 성필남 (농촌진흥청 국립축산과학원 난지축산연구소) ;
  • 조인철 (농촌진흥청 국립축산과학원 난지축산연구소)
  • Han, Sang-Hyun (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA) ;
  • Seong, Pil-Nam (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA) ;
  • Cho, In-Cheol (Subtropical Livestock Research Institute, National Institute of Animal Science, RDA)
  • 투고 : 2017.04.26
  • 심사 : 2017.06.28
  • 발행 : 2017.07.30

초록

본 연구는 Lysophospholipase I (LYPLA1) 유전자의 SNP 마커인 rs385360448 g.23655332G>C의 유전자형이 제주도 한우와 제주흑한우(한우${\times}$제주흑우, JCC) 집단의 도체형질에 미치는 영향을 시험하였다. 한우 거세우 집단에서 LYPLA1 rs385360448 G/-를 보유한 도체는 C/C 동형접합에 비해 유의적으로 높은 수준의 근내지방도(MARB)와 조직감지수(TI)를 나타내었다(p<0.05). 반면, LYPLA1 유전자형은 도체중, 등지방두께, 등심단면적, 육색, 지방색에서는 유의적인 차이를 보이지 않았다(p>0.05). JCC 거세우에서는 LYPLA1 G/- 도체에서 C/C 동형접합에 비해 등심단면적(EMA)의 수준이 유의적으로 더 높았다(p<0.05). 이번 연구의 결과들은 LYPLA1 유전자형이 소의 등심에서 인지질 대사를 통해 근내지방도와 조직감의 수준과 등심단면적의 수준을 변화시킬 수 있음을 보여주고 있다. 이러한 결과들은 LYPLA1 유전자형이 한우와 제주흑우-유래의 산업화축군에서 도체형질을 개선할 수 있는 유전자 마커로써의 기능을 수행할 수 있을 것으로 기대된다.

Genotypes of the nucleotide substitution g.23655332G>C of SNP marker rs385360448 at Lysophospholipase I (LYPLA1) gene intron 7, were tested for their effect on the carcass traits of Hanwoo and Jeju Crossbred cattle ($F_1$ progeny produced between Hanwoo ${\times}$ Jeju Black cattle) populations on Jeju Island. In the Hanwoo steer population, the meats containing LYPLA1 rs385360448 G/- genotypes showed significantly higher marbling scores and greater texture indices, compared to those of rs385360448 C/C homozygous animals (p<0.05). However, the LYPLA1 genotypes were not associated with the levels of carcass weight, backfat thickness, eye muscle area (EMA), meat color, and fat color (p>0.05). On the other hand, in the JCC steer population, the LYPLA1 G/- harboring meats showed significantly greater EMA levels, compared to those of C/C homozygotes (p<0.05). The results of the present study indicate that the LYPLA1 genotypes could alter the levels of intramuscular fat deposition, texture index, and eye muscle area via phospholipid metabolism in the Longissimus dorsi muscle of the cattle. These findings suggested that LYPLA1 genotypes may effect molecular genetic markers in the improvement of carcass traits of Hanwoo and Jeju Black industrial cattle populations on Jeju Island.

키워드

참고문헌

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