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논문 기본 정보

자료유형
학술저널
저자정보
김상근 (충남대학교 수의과대학) 이만휘 (충남대학교 수의과대학)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제15권 제2호
발행연도
1991.1
수록면
141 - 147 (7page)

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This stduy was carried out in order to investigate the effects of cryoprotective concentration and equilibration time on survival rate of ultrarapidly frozen in vitro fertilized bovine embryos. In vitro fertilized bovine embryos, following dehydration by cryoprotective agents and sucorese were directly plunged into liquid nitrogen and thawed in 38$^{\circ}C$ water. Survival rate was defined by development rate to the morula and blaqstocyst stage after in vitro culture of by FDA test. The results are summarized as follows : 1. The survival rates of in vitro fertilized bovine embryos after ultrarapid frozen-thawing in the freezing medium of 0.25M sucroese added 2.0M, 2.5M, 3.0M, 3.5M, 4.0M glycerol were 75.0%, 72.0%, 67.6%, 44.8% and 18.3% respectively. 2. The survival rates of in vitro fertilized bovine embryos after ultrarapid frozen-thawing in the freezing medium of 0.25M sucrose added 2.0M, 2.5M, 3.0M, 3.5M, 4.0M DMSO were 64.0%, 66.7%, 70.8%, 52.7% and 18.6, respectively. 3. The survival rates of in vitro fertilized bovine embryos after ultrarapid frozen-thawing in the freezing medium of 0.25M sucrose added 2.0M, 2.5M, 3.0M, 3.5M, 4.0M propanediol were 68.4%, 64.9%, 63.2%, 62.2% and 34.7%, respectively. 4. The survival rates of in vitro fertilized bovine embryos after ultrarapid frozen-thawing in the freezing medium of 2.50M glycerol added 0.1M, 0.25M, 0.5M, 0.75M, sucrose were 60.5%, 72.2%, 70.1% and 54.9%, respectively. The survival rate of in vitro fertilized embryos after ultrarapid frozen-thawing in the freezing medium of 2.5M glycerol added 0.25M sucrose were higher than concentration of 0.10M, 0.50M and 0.75M sucrose. 5. The equilibration time on the survival rate of in vitro fertilized bovine embryos was attained after short period of time(2.5~5min.) in the freezing medium added 0.25M sucrose and 3.0M DMSO higher than long period time(1~20min.).

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