Effects of Estrus Status, Oocyte Diameter and Supplementations on In Vitro Maturation of Canine Immature Oocytes
(주)코리아스칼라
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- 2016.04.01
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- 2005.06
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서지정보
ㆍ발행기관 : 한국동물번식학회
ㆍ수록지정보 : Reproductive & developmental biology / 29권 / 2호
ㆍ저자명 : Yoon J. T., Choi E. J., Lee H. J., Kim C. H., Min K. S., Hwang S. S.
목차
INTRODUCTION MATERIALS AND METHODS RESULTS DISCUSSION REFERENCES
영어 초록
The present study was performed to determine the ability of canine oocytes to achieve nuclear maturation according to oocyte diameter and different culture environments. All of the collected oocytes were classified by grade 1 to 3 and by their diameters such as <100㎛, <100㎛ to <110㎛, <110㎛ to <120㎛, >120㎛. Oocytes were cultured in culture medium supplemented with 10%FBS, 0.4%BSA,10% porcine follicular fluid (pFF), 10% canine serum (CS), or 10% canine estrus serum (CES). The mean number of oocytes recovered from estrus status ovaries was significantly higher than that of anestrus status ovaries (p<0.01). The maturation rate of grade 1 oocytes (>120㎛) was significantly higher than that of the other groups (p<0.05). Nuclear maturation to MI to MII in diameter of >110㎛ groups was significantly higher than that in <100㎛ group (p<0.05). The oocytes cultured in 10% FBSsupplemented group were significantly higher rate of GVBD compared to the other supplemented groups (p<0.05), and oocytes maturation to MI to MII in 10% FBS-, 0.4% BSA-, and 10% pFF-supplemented groups were significantly higher than those in 10% CS-supplemented group (p<0.05). Based on these results, the estrus status and the size of oocyte affect positively to improve nuclear maturation of canine immature oocytes in vitro. Among several protein sources, porcine follicular fluid was the most effective supplementation to culture medium to achieve higher in vitro maturation rate.
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