Real-time ultrasound imaging for predicting ovine fetal age

Sergeev, L.; Kleemann, David O.; Walker, S.K.; Smith, D. H.; Grosser, T.I.; Mann, Tânia Szejnfeld; Seamark, R.F.

doi:10.1016/0093-691x(90)90014-k

Cited by 37 publications

(24 citation statements)

References 11 publications

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“…Similar correlation was found by using transabdominal approach in Suffolk and Finn sheep from Days 40 to 95 (Haibel and Perkins 1989), in Booroola x South Australian Merino sheep from Days 49 to 109 (Sergeev et al 1990) and in Swedish peltsheep from 10 weeks before lambing to birth (Aiumlamai et al 1992). Kelly and Newnham (1989) found the occipito-nasal length to be more accurate than BPD, showing a linear increase till Day 80.…”

Section: C-fetal Head Diameterssupporting

confidence: 58%

“…Kelly and Newnham (1989) found the occipito-nasal length to be more accurate than BPD, showing a linear increase till Day 80. However, Sergeev et al (1990) reported that the occipito-nasal length was more difficult to be measured than BPD and had the same accuracy for predicting fetal age. Gonzalez et al (1998) found a high correlation (r = 0.95) between the fetal occipito-nasal length and the gestational age from Days 38 to 91 of gestation.…”

Section: C-fetal Head Diametersmentioning

confidence: 99%

“…Ultrasonographic measurements of the ovine fetal thoracic diameter showed high correlation with the fetal age from Days 49 to 109 (Sergeev et al 1990) and from Days 23 to 90 of gestation (Gonzalez et al 1998). …”

Section: D-thoracic Diametermentioning

confidence: 99%

See 2 more Smart Citations

Pregnancy Dagnosis in Sheep: Review of the Most Practical Methods

Karen¹,

Kovács²,

Beckers³

et al. 2001

Acta Vet. Brno

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Various practical methods have been used for pregnancy diagnosis in sheep. Both pregnancy and fetal numbers are accurately diagnosed by using radiography after day 70 of gestation. Rectal abdominal technique detects pregnancy with an accuracy of 66 to 100% from d 49 to 109 of gestation, however, it has a low (17 to 57%) accuracy for determining multiple fetuses. Progesterone assays have a high sensitivity (88% to 100%) and a low specificity (60% to 72%) at d 16 to 18. Estrone sulphate assay accurately detects pregnant ewe at d 30 to 35. Ovine pregnancy specific protein B (PSPB) assay accurately (100%) detects pregnancy from d 26 after breeding onwards. The accuracy of progesterone, estrone sulphate and oPSPB assays for determining fetal numbers is relatively low. A-mode and Doppler ultrasonic techniques accurately detect pregnancy during the second half of gestation. Fetal numbers cannot be determined by A-mode ultrasound, while the Doppler technique needs experience to achieve high accuracy. Transrectal B-mode, real time ultrasonography identifies the embryonic vesicles as early as d 12.8 after mating, but the sensitivity of the technique for pregnancy is very low (12%) earlier than 25 d after mating. Transabdominal B-mode ultrasonography achieved high accuracy for pregnancy diagnosis (94% to 100%) and the determination of fetal numbers (92% to 99%) on d 29 to 106 of gestation. Realtime, B-mode ultrasonography appears to be the most practical and accurate method for diagnosing pregnancy and determining fetal numbers in sheep.

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Section: C-fetal Head Diameterssupporting

confidence: 58%

Section: C-fetal Head Diametersmentioning

confidence: 99%

See 1 more Smart Citation

Pregnancy Dagnosis in Sheep: Review of the Most Practical Methods

Karen¹,

Kovács²,

Beckers³

et al. 2001

Acta Vet. Brno

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“…Rasyonlar gebeliğin birinci ayında koyunlara 100 g kesif yem, 2. ayda 200 g fiğ, yulaf samanı ve 300 g kesif yem, gebeliğin 3. ayında 800 g kaba yem ve 400 g kesif yem, 4. ayda 900 g kaba yem ve 600 g kesif yem, beşinci ayda ise 2600 kcal enerji içerecek şekilde 1000 g kaba yem ve 800 g kesif yem ve buna ek olarak % 15 Longitudinal baş çapı (LBÇ) ölçümlerinin, gebeliğin 38-91. günleri arasında yapılabileceği bildirilmiş (11), benzer şekilde bu çalışmada ölçümler net olarak gebeliğin 38-90. günleri arasında yapılmıştır. Gebelik yaşı ile LBÇ arasında korelasyon bulunduğu ilgili literatürler ile paralel olarak çalışmada görülmüştür (11,20,26).…”

Section: Materyal Ve Metotunclassified

“…Embriyonik kesenin ilk olarak gebeliğin 12-20. günleri arasında görüldüğü, net olarak ölçümlerinin ise gebeliğin [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]. günleri arasında yapılabildiği bildirilmiştir (9 Yapılan bu çalışmada, Akkaraman ırkı koyunlarda rektal ve ekstra-abdominal ultrasonografi yöntemi ile incelenen fötal parametrelerde gebelik süresindeki artışa paralel olarak meydana gelen gelişimin izlenerek, bu paralelliğin bir formülle açıklanabilmesi amaçlanmak-tadır.…”

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Akkaraman ırkı koyunlarda transrektal ve transabdominal muayene tekniği kullanılarak embriyonik ve fötal yaşın belirlenmesi

Hande;KAYMAZ¹

2011

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Determination of embryonic and fetal age by transrectal and transabdominal ultrasonographic examination in Akkaraman ewesSummary: This study was performed in order to determine gestational age in ewes by fetometry. For this purpose, a total of 10 Akkaraman ewes were examined by using ultrasonography supported by a linear array transducer. In order to find an equation to calculate the gestational age (GA) by using fetometric method, the parameters of diameter of embryonic vesicle (EVD), crown-rump length (CRL), occipito-nasal diameter (OND), biparietal diameter (BPD), orbital diameter (OD), thoracic diameter (TD), cotyledon diameter (CD), transversal heart diameter (THD), stomach diameter (SD) and kidney diameter (KD) were calculated. At the end of the study gestation age equations was produced depending on correlations which were statistically significant. In this sense, As a result, it was shown that gestational age could be calculated by using these formulas. It was seen that OND, BPD, OD parameters were found to be most effectively 36-95 days to determine gestational age.

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Ultrasonography in Small Ruminant Reproduction

Meinecke-Tillmann¹,

Meinecke²

2007

Comparative Reproductive Biology

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Real-time ultrasound imaging for predicting ovine fetal age

Cited by 37 publications

References 11 publications

Pregnancy Dagnosis in Sheep: Review of the Most Practical Methods

Pregnancy Dagnosis in Sheep: Review of the Most Practical Methods

Akkaraman ırkı koyunlarda transrektal ve transabdominal muayene tekniği kullanılarak embriyonik ve fötal yaşın belirlenmesi

Ultrasonography in Small Ruminant Reproduction

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