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

Kanno, Chihiro; Sakamoto, Kentaro Q.; Yanagawa, Yojiro; Takahashi, Yoshiyuki; Katagiri, Seiji; Nagano, Masashi

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

Kanno, Chihiro; Sakamoto, Kentaro Q.; Yanagawa, Yojiro et al.

Journal of veterinary medical science, 2017, 79(8), 1359-1365

Permalink : https://hdl.handle.net/2115/70805

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アクセス権	open access
URI	https://hdl.handle.net/2115/70805
タイトル	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
著者	Kanno, Chihiro ; Sakamoto, Kentaro Q. ; Yanagawa, Yojiro ; Takahashi, Yoshiyuki ; Katagiri, Seiji ; Nagano, Masashi
著者名 Kanno, Chihiro
e-Rad_Researcher 80374627 著者名 Sakamoto, Kentaro Q.
著者名 Yanagawa, Yojiro
e-Rad_Researcher 70167485 著者名 Takahashi, Yoshiyuki
e-Rad_Researcher 00292061 著者名 Katagiri, Seiji
e-Rad_Researcher 70312402 著者名 Nagano, Masashi
言語	英語
キーワード	bovine
	cluster analysis
	computer-assisted sperm analysis
	motility
	spermatozoa
発行日	2017-08
出版者	公益社団法人日本獣医学会
出版者	The Japanese Society of Veterinary Science
収録物名	Journal of veterinary medical science
巻(号)	79(8)
ページ	1359-1365
抄録	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.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2017 The Japanese Society of Veterinary Science
PISSN	0916-7250
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1292/jvms.17-0012