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Variation with age in the numbers of ovulated ova and follicles of Wistar-Imamichi adult rats superovulated with eCG-hCG

Experimental animals Volume 55 Issue 1 Page 45-48
published_at 2006
2007020170.pdf
[fulltext] 1.09 MB
Title
Variation with age in the numbers of ovulated ova and follicles of Wistar-Imamichi adult rats superovulated with eCG-hCG
Creators Kagabu Satosi
Creators Umezu Motoaki
Creator Keywords
follicle ovulation rat superovulation variation
There are large variations with age in the number of ovulated ova found in superovulated female Wistar-Imamichi rats. In this study we investigated the numbers of ovulated ova and follicles with the aim of developing a superovulation technique that minimises variations. We also examined the number of non-atretic follicles in untreated rats aged 7-14 weeks, for each week of age. The numbers of 250-549 μm non-atretic follicles in untreated rats and the numbers of ovulated ova in superovulated rats both reached a peak at 12 weeks of age. The coefficients of variation for both follicle numbers and ova numbers changed with each week of age, reaching a maximum at 9 weeks of age and a minimum at 12 weeks of age. In order to achieve stable numbers of ova from superovulated rats, satisfactory results will be achieved using 12-week-old rats, minimising individual variations, with high numbers of ova.
Languages eng
Resource Type journal article
Publishers 日本実験動物学会
Date Issued 2006
File Version Version of Record
Access Rights open access
Relations
[ISSN]1341-1357
[NCID]AA11032321
https://doi.org/10.1538/expanim.55.45
[isVersionOf] [URI]http://www.jstage.jst.go.jp/browse/expanim/-char/ja/
Schools 農学部