Effect of Various Percoll Washings on Motile Sperm Recovery Rate and Motion Kinematics in Frozen-thawed Bovine Semen

다양한 Percoll 세척 방법이 동결-융해된 한우 정자의 회수율 및 운동역학에 미치는 영향

  • Yoon, Sung-Jae (Department of Animal Science and Technology, School of Bioresource & Bioscience, Chung-Ang University) ;
  • Park, Yoo-Jin (Department of Animal Science and Technology, School of Bioresource & Bioscience, Chung-Ang University) ;
  • Cheong, Jin-Yong (Department of Animal Science and Technology, School of Bioresource & Bioscience, Chung-Ang University) ;
  • Jeong, Kyu-Hyun (Department of Animal Science and Technology, School of Bioresource & Bioscience, Chung-Ang University) ;
  • Kim, Min-Seop (Department of Animal Science and Technology, School of Bioresource & Bioscience, Chung-Ang University) ;
  • Yoo, Sae-Mi (Department of Animal Science and Technology, School of Bioresource & Bioscience, Chung-Ang University) ;
  • Kim, Yun-Hee (Department of Animal Science and Technology, School of Bioresource & Bioscience, Chung-Ang University) ;
  • Kwon, Woo-Sung (Department of Animal Science and Technology, School of Bioresource & Bioscience, Chung-Ang University) ;
  • Mohamed, El-Sayed A. (Department of Animal Science and Technology, School of Bioresource & Bioscience, Chung-Ang University) ;
  • Pang, Myung-Geol (Department of Animal Science and Technology, School of Bioresource & Bioscience, Chung-Ang University)
  • 윤성재 (중앙대학교 생명자원공학부 동물생명공학) ;
  • 박유진 (중앙대학교 생명자원공학부 동물생명공학) ;
  • 정진용 (중앙대학교 생명자원공학부 동물생명공학) ;
  • 정규현 (중앙대학교 생명자원공학부 동물생명공학) ;
  • 김민섭 (중앙대학교 생명자원공학부 동물생명공학) ;
  • 유새미 (중앙대학교 생명자원공학부 동물생명공학) ;
  • 김연희 (중앙대학교 생명자원공학부 동물생명공학) ;
  • 권우성 (중앙대학교 생명자원공학부 동물생명공학) ;
  • ;
  • 방명걸 (중앙대학교 생명자원공학부 동물생명공학)
  • Received : 2011.02.25
  • Accepted : 2011.03.03
  • Published : 2011.03.31

Abstract

The objective of this study was to examine the effect of various discontinuous Percoll washing conditions on motile sperm recovery rate and motion kinematics. Frozen semen samples from 3 bulls (0.5 ml plastic straws, 6% glycerol in egg yolk-Tris-glycerol extender) were thawed in $37^{\circ}C$ water bath for 1 min. After thawing, the mixed semen samples were randomly allocated to 12 treatment groups. Briefly, the spermatozoa were centrifuged for three different time lengths (10, 20, and 30 min) at two gravities ($300{\times}g$ and $700{\times}g$) through two concentrations of discontinuous Percoll density gradient of 1 ml 90%: 1 ml 45% Percoll and 2 ml 90%: 2 ml 45% Percoll to remove extender, debris, and dead spermatozoa. Motile sperm recovery rate and motion kinematics were evaluated by computer assisted sperm analyzer using Makler counting chamber. Sperm motility (%) and motile sperm recovery rate showed similar pattern in all treatment groups. However, sperm motility (%) and motile sperm recovery rate were highest at $700{\times}g$ for 30 min through a discontionous Percoll density gradient of 1 ml 90%: 1 ml 45% Percoll. There were no significant differences in motion kinematics after various Percoll washings. These results suggest that force of centrifugation, centrifugation time, and Percoll volume significantly affect motile sperm recovery rate.

Keywords

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