Fetal Age Estimation of Hokkaido Sika Deer (Cervus nippon yesoensis) Using Ultrasonography During Early Pregnancy

Yanagawa, Yojiro; Matsuura, Yukiko; Suzuki, Masatsugu et al.

Journal of Reproduction and Development, 2009, 55(2), 143-148

Permalink : https://hdl.handle.net/2115/59490

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アクセス権
open access
URI
https://hdl.handle.net/2115/59490
タイトル
Fetal Age Estimation of Hokkaido Sika Deer (Cervus nippon yesoensis) Using Ultrasonography During Early Pregnancy
著者
Yanagawa, Yojiro ; Matsuura, Yukiko ; Suzuki, Masatsugu ; Saga, Shin-ichi ; Okuyama, Hideto ; Fukui, Daisuke ; Bandou, Gen ; Katagiri, Seiji ; Takahashi, Yoshiyuki ; Tsubota, Toshio
著者名
Yanagawa, Yojiro
e-Rad_Researcher
60374245
著者名
Matsuura, Yukiko
e-Rad_Researcher
90216440
著者名
Suzuki, Masatsugu
著者名
Saga, Shin-ichi
著者名
Okuyama, Hideto
著者名
Fukui, Daisuke
著者名
Bandou, Gen
e-Rad_Researcher
00292061
著者名
Katagiri, Seiji
e-Rad_Researcher
70167485
著者名
Takahashi, Yoshiyuki
e-Rad_Researcher
10207441
著者名
Tsubota, Toshio
言語
英語
キーワード
Fetal age estimation
Fetal development
Hokkaido sika deer (Cervus nippon yesoensis)
Ultrasonography
発行日
2009-05
収録物名
Journal of Reproduction and Development
巻(号)
55(2)
ページ
143-148
抄録
In sika deer, the normal method of estimating fetal age, based on fetal weight, is not applicable during the early pregnancy period. The objective of the present study was to describe the growth and development of sika deer fetuses and to establish a method for fetal age estimation during early pregnancy using ultrasonography. Five captive female Hokkaido sika deer (Cervus nippon yesoensis) were observed for estrus and mated (day 0) with an intact male. At two- or three-day intervals, fetuses were observed by rectal ultrasonographic scans until 59-61 days of gestation. The straight crown-rump length (SCRL), curved crown-rump length (CCRL), head length (HL), trunk depth (TD) and heart rate (HR) of the fetuses were measured. Linear regression equations were computed for each measurement together with fetal age. Analyses were conducted after transformation to a natural logarithm for SCRL and CCRL. All equations were significant (P<0.001), with SCRL becoming measurable earlier (day 20) than the others and yielding the best correlation (Days= -2.08+14.15 LnX: X=SCRL, Ln=natural logarithm). Therefore, we concluded that a precise estimation of fetal age in early gestation is best performed using SCRL measurements.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
PISSN
1348-4400
EISSN
0916-8818
NCID
AA10936678
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.1262/jrd.20113