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Comparison of sperm subpopulation structures in first and second ejaculated semen from Japanese black bulls by a cluster analysis of sperm motility evaluated by a CASA system
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Title: | Comparison of sperm subpopulation structures in first and second ejaculated semen from Japanese black bulls by a cluster analysis of sperm motility evaluated by a CASA system |
Authors: | Kanno, Chihiro Browse this author | Sakamoto, Kentaro Q. Browse this author →KAKEN DB | Yanagawa, Yojiro Browse this author | Takahashi, Yoshiyuki Browse this author →KAKEN DB | Katagiri, Seiji Browse this author →KAKEN DB | Nagano, Masashi Browse this author →KAKEN DB |
Keywords: | bovine | cluster analysis | computer-assisted sperm analysis | motility | spermatozoa |
Issue Date: | Aug-2017 |
Publisher: | 公益社団法人 日本獣医学会 |
Journal Title: | Journal of veterinary medical science |
Volume: | 79 |
Issue: | 8 |
Start Page: | 1359 |
End Page: | 1365 |
Publisher DOI: | 10.1292/jvms.17-0012 |
Abstract: | In the present study, bull sperm in the first and second ejaculates were divided into subpopulations based on their motility characteristics using a cluster analysis of data from computer-assisted sperm motility analysis (CASA). Semen samples were collected from 4 Japanese black bulls. Data from 9,228 motile sperm were classified into 4 clusters; 1) very rapid and progressively motile sperm, 2) rapid and circularly motile sperm with widely moving heads, 3) moderately motile sperm with heads moving frequently in a short length, and 4) poorly motile sperm. The percentage of cluster 1 varied between bulls. The first ejaculates had a higher proportion of cluster 2 and lower proportion of cluster 3 than the second ejaculates. |
Rights: | © 2017 The Japanese Society of Veterinary Science | https://creativecommons.org/licenses/by-nc-nd/4.0/ |
Type: | article |
URI: | http://hdl.handle.net/2115/70805 |
Appears in Collections: | 獣医学院・獣医学研究院 (Graduate School of Veterinary Medicine / Faculty of Veterinary Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 永野 昌志
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