Document Detail

Parturition, dystocia and foal survival: a retrospective study of 1047 births.
MedLine Citation:
PMID:  22594021     Owner:  NLM     Status:  MEDLINE    
REASON FOR PERFORMING STUDY: An understanding of the normal events of foaling, causes of dystocia and clinical outcomes is important for equine practitioners.
OBJECTIVES: The goals of the present study were to: 1) evaluate factors that influence gestation length; 2) report duration of Stage II labour; 3) determine the frequency of dystocia and premature placental separation; and 4) determine the relationship between problems at foaling and foal survival.
MATERIALS AND METHODS: Foaling records of 1047 mare births were evaluated.
RESULTS: The average gestation length was 342.7 days [corrected] +/- 0.4 days, with no effect of mare age or breed observed. Mares carrying male fetuses had a longer gestation (P < or = 0.001) than mares carrying female fetuses. A majority (52.8%) of mares foaled at night between 2000 h and 0200 h when the facility was quiet. Dystocia occurred in 10.1% of all births and the incidence rate was higher in Thoroughbred mares than in Quarter Horse mares. The most common cause of dystocia was abnormalities of fetal posture. A delay in foal delivery beyond 40 min of Stage II of labour was associated with a significant increase in foal mortality. In addition, an increase in foal morbidity and mortality was noted when the interval from birth to standing or birth to nursing was prolonged.
CONCLUSION: Early detection and rapid appropriate intervention are critical to foal survival in an equine dystocia.
POTENTIAL RELEVANCE: Equine veterinarians should counsel horse owners that early recognition of a foaling problem and rapid, appropriate intervention are critical to the survival of a foal.
P M McCue; R A Ferris
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Equine veterinary journal. Supplement     Volume:  -     ISSN:  -     ISO Abbreviation:  Equine Vet J Suppl     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-05-18     Completed Date:  2012-06-21     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  9614088     Medline TA:  Equine Vet J Suppl     Country:  United States    
Other Details:
Languages:  eng     Pagination:  22-5     Citation Subset:  IM    
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MeSH Terms
Animals, Newborn*
Circadian Rhythm*
Dystocia / veterinary*
Horse Diseases / etiology*
Parturition / physiology*
Retrospective Studies
Erratum In:
Equine Vet J Suppl. 2013 Mar;45(2):259

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

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