Ultrasonographic Monitoring of Nuclear Transferred Fetal Weight during the Final Stage of Gestation in Holstein Cows

Journal of Veterinary Medical Science

Kyoko KAWAHATA²  Taichi GOTO²  Atushi UEKI²  Hideki TSUCHIYA¹  Masahiro TAKAHASHI² 

[1] Animal Bio-Technology Center, Livestock Improvement Association of Japan, Inc.;Technical Research Center, Koiwai Noboku Co., Ltd.

关键词: birth weight;    Holstein;    metacarpal width;    nuclear transfer;    ultrasonography;   

DOI  :  10.1292/jvms.67.807

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(13)Cited-By(2)Dystocia or stillbirth accompanied by Large Offspring Syndrome (LOS) occurs rather frequently in Holstein nuclear transferred calves. In regard to prophylaxes, nuclear transferred Holstein fetuses were monitored with ultrasonography during the final stage of gestation. Fetal weight was estimated weekly based on the fetal metacarpal width using ultrasonography. Fourteen Holstein cows pregnant with Holstein nuclear transferred fetuses were the subjects of this experiment. The fetal weight was estimated by measuring the fetal metacarpal width during the last month of gestation according to the expected date of parturition. Measurements were performed on a weekly basis. The ultrasound-estimated metacarpal width and body weight of 13 of the fetuses in the last week of gestation (30.2 ± 2.2 mm, 50.0 ± 4.7 kg) were similar to the actual measurement immediately after birth (30.0 ± 2.1 mm, 51.2 ± 5.5 kg). These results indicate that ultrasonographic monitoring within a week of parturition to is accurate for estimating fetal weight. Prediction of LOS with ultrasonography contributes to reliable a diagnostic method that minimizes syndrome-related gyneco-obstetric complications at parturition with the aid of appropriate treatments.

【 授权许可】

Unknown