Reproductive and Developmental Biology

  • 제35권3호
  • /
  • Pages.377-383
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  • 2011
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  • 1738-2432(pISSN)
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  • 2288-0151(eISSN)
한국동물번식학회 (The Korean Society of Animal Reproduction)
권호 표지

제주흑우 동결정액 제조시 Ethylene Glycol의 농도와 예비 동결 조건이 정자의 생존율 및 첨체양상에 미치는 영향

Effect of Ethylene Glycol Concentration and Freezing Speed on Post-thawed Semen Viability and Acrosome Integrity in Korean Jeju Black Bull

  • 최선호 (농촌진흥청 국립축산과학원 난지축산시험장) ;
  • 고민희 (농촌진흥청 국립축산과학원 난지축산시험장) ;
  • 강태영 (농촌진흥청 국립축산과학원 난지축산시험장) ;
  • 조상래 (농촌진흥청 국립축산과학원 난지축산시험장) ;
  • 박용상 (농촌진흥청 국립축산과학원 난지축산시험장) ;
  • 오신애 (농촌진흥청 국립축산과학원 난지축산시험장)
  • Choi, Sun-Ho (Subtropical Animal Experiment Station, National Institute of Animal Science, RDA) ;
  • Ko, Min-Hee (Subtropical Animal Experiment Station, National Institute of Animal Science, RDA) ;
  • Kang, Tae-Young (Subtropical Animal Experiment Station, National Institute of Animal Science, RDA) ;
  • Cho, Sang-Rae (Subtropical Animal Experiment Station, National Institute of Animal Science, RDA) ;
  • Park, Yong-Sang (Subtropical Animal Experiment Station, National Institute of Animal Science, RDA) ;
  • Oh, Shin-Ae (Subtropical Animal Experiment Station, National Institute of Animal Science, RDA)
  • 투고 : 2011.09.09
  • 심사 : 2011.09.22
  • 발행 : 2011.09.30
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초록

본 연구에서는 제주흑우의 유전자원 보존과 증식을 위한 안정적인 동결정액 제조법을 수립하기 위하여 제주흑우의 정액 동결 제조에 있어 동결 융해 후 ethylene glycol이 정자의 운동성, 생존율 그리고 첨체에 미치는 영향에 대하여 알아보고자 수행하였다. 제주흑우의 동결정액제조시 5%의 ethylene glycol의 첨가가 $72.5{\pm}5.00%$의 활력과 $54.88{\pm}0.66%$의 생존율 그리고 $46.00{\pm}2.40%$의 정자막 온전성을 나타내 3%와 5%의 ethylene glycol을 첨가한 실험구보다 유의적으로 높은 결과를 나타냈다(p<0.05). 또한, 7% glycerol을 사용한 실험구와 비교하였을 때 5% ethylene glycol을 첨가하였을 때 유의적으로 높은 생존율과 정자막 온전성을 나타냈다(p<0.05). 또한, 예비 동결 조건이 정자의 성상에 미치는 영향에 있어서는 3 cm, 5분 예비동결 실험구에서 생존율과 정자막 온전성이 유의적으로 감소하였다(p<0.05). Ethylene glycol이 정자의 첨체 양상에 미치는 영향에 있어서는 5%와 7%의 ethylene glycol을 사용하였을 때 효과적으로 첨체가 보호되어 F pattern의 비율이 유의적으로 높게 나타났으며(p<0.05), 조기 첨체 반응도 유의적으로 낮은 수준을 보였다(p<0.05). 그러나 7%의 glycerol과 비교하였을 때는 유의적인 차이를 나타내지 않았으며, 5%와 7% ethylene glycol 사이의 유의적 차이도 나타나지 않았다. 예비 동결 조건이 정자의 첨체 양상에 미치는 영향에 있어서는 역시 정자의 생존율과 정자막 온전성과 같이 3 cm, 5분 예비동결 시 유의적인 F pattern의 감소와 조기 첨체 반응에 의한 AR paattern의 증가를 볼 수 있었다(p<0.05). 이와 같은 결과는 본 연구에서 사용된 ethylene glycol과 예비동결 조건의 조합으로 나타난 결과를 활용하여, 희소가축의 생식세포 보존 및 유전자원 확립을 위한 중요한 자료가 될 것이며, 생존율과 운동성 증대를 위한 다양한 희석제를 활용한 연구가 필요할 것으로 사료된다.

The objective of this study was to examine effect of ethylene glycol for semen cryopreservation in Korean Jeju Black Bull. The semen was cryopreserved with extenders containing cryoprotectants (7% glycerol and 3%, 5%, 7% ethylene glycol) and packed to 0.5 ml straws. The semen straws were located above 3 cm of liquid nitrogen for 5 min, 5 cm for 10 min and 8 cm for 10 min. And then frozen straw was plunged into $LN_2$. Post-thawed sperm motility, viability and membrane integrity were significantly higher in 5% ethylene glycol ($72.5{\pm}5.00%$, $54.88{\pm}0.66%$ and $46.00{\pm}2.40%$; p<0.05). Motility and viability were similar between 7% glycerol and 5% ethylene glycol. However, the membrane integrity was significantly higher in 5% ethylene glycol ($34.69{\pm}4.64%$ vs $46.00{\pm}2.40%$; p<0.05). The viability and membrane integrity were significantly higher in 5 cm for 10 min and 8 cm for 10 min than 3 cm for 5 min (viability: $55.81{\pm}2.94$, $55.19{\pm}3.34$ vs $47.94{\pm}3.48%$; p<0.05 and membrane integrity: $44.94{\pm}3.51$, $46.06{\pm}2.25$ vs $40.38{\pm}1.03%$; p<0.05). The percentage of capacitated sperm assessed by CTC staining, percentage of F pattern was higher in 7% glycerol, 5% and 7% ethylene glycerol, and AR pattern was significantly higher in 3% ethylene glycol. F pattern was significantly increased in 5 cm for 10 min and 8 cm for 10 min (p<0.05), but AR pattern was significantly increased in 3 cm for 5 min (p<0.05).

키워드

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