Document Detail

Ultrasonographic fetal well-being assessment, neonatal and postpartum findings of cloned pregnancies in cattle: a preliminary study on 10 fetuses and calves.
MedLine Citation:
PMID:  19436477     Owner:  NLM     Status:  MEDLINE    
Cloned pregnancies in cattle are considered to be at risk due to a variety of fetal or adnexal abnormalities. Data is lacking concerning the possibility of transabdominal ultrasonography in the assessment of these high risk pregnancies. Transabdominal ultrasonography has rarely been reported in the assessment of bovine cloned pregnancies. Ten Holstein heifers carrying 8-month-old cloned fetuses were assessed by transabdominal ultrasonographic examination during the 3rd trimester of pregnancy. Fetal heart rates (FHR), movements, adnexal appearance, and placentome size were recorded. The outcome of the pregnancies was also noted and potential indicators of fetal demise recorded. Survival rate 1 week after birth was 30%. Mean FHR was 113 beats per minute (range: 92 to 128 bpm) during the fetal ultrasonography. No correlation between FHR and fetal activity was found. Fetal hyperactivity and imaging of hyperechoic particles in both allantoic and amniotic fluids were possible signs of fetal distress. Despite the size of the fetus and the deep bovine abdomen, fetal transabdominal ultrasonography can be performed in cattle. This preliminary study points to the necessity of further larger studies for defining normal and abnormal findings in bovine late pregnancy.
Sébastien Buczinski; Gilles Fecteau; Geneviève Comeau; Soren R Boysen; Réjean C Lefebvre; Lawrence C Smith
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Canadian veterinary journal. La revue vétérinaire canadienne     Volume:  50     ISSN:  0008-5286     ISO Abbreviation:  Can. Vet. J.     Publication Date:  2009 Mar 
Date Detail:
Created Date:  2009-05-13     Completed Date:  2009-07-13     Revised Date:  2013-06-02    
Medline Journal Info:
Nlm Unique ID:  0004653     Medline TA:  Can Vet J     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  261-9     Citation Subset:  IM    
Département des Sciences Cliniques, Centre de Recherche en Reproduction Animale, Université de Montréal, 3200 rue Sicotte, Saint-Hyacinthe, Québec J2S 7C6, Canada.
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MeSH Terms
Animals, Newborn
Cattle / physiology*
Cloning, Organism
Fetal Death / ultrasonography,  veterinary
Fetus / physiology*
Gestational Age
Heart Rate, Fetal / physiology*
Pregnancy Outcome / veterinary
Pregnancy, Animal / physiology*
Ultrasonography, Prenatal / veterinary*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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