Factors affecting foal birth weight in Thoroughbred horses

Elliott, C., Morton, J. and Chopin, J. (2009) Factors affecting foal birth weight in Thoroughbred horses. Theriogenology, 71 4: 683-689. doi:10.1016/j.theriogenology.2008.09.041


Author Elliott, C.
Morton, J.
Chopin, J.
Title Factors affecting foal birth weight in Thoroughbred horses
Journal name Theriogenology   Check publisher's open access policy
ISSN 0093-691X
Publication date 2009-03-01
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.theriogenology.2008.09.041
Volume 71
Issue 4
Start page 683
End page 689
Total pages 7
Editor Gandolfi, F.
Kastelic, John P.
Place of publication New York , U.S.A
Publisher Elsevier
Collection year 2010
Language eng
Subject 0707 Veterinary Sciences
C1
Abstract Foaling data from 348 Thoroughbred foals born on a commercial stud were analysed to investigate interrelationships among mare age, parity, gestation length, foal sex, placental weight, and foal birth weight. Placental weight was positively correlated with foal birth weight up to a threshold of 6.5 kg; above this, placental weight was not significantly associated with foal birth weight. Placental weight was assessed, including the amniotic membranes and umbilical cord as well as the allantochorion. Using path analysis, parity was positively associated with foal birth weight both directly and through increased placental weights, but age was not directly related to foal birth weight. Over the range of gestation lengths observed, gestation length was not significantly associated with foal birth weight. We conclude that, in populations represented by this study population, either placental weights up to 6.5 kg are rate-limiting for foal birth weight or placental weight increases with foal birth weight up to this threshold. However, further increases in placental weight are not associated with additional increases in foal birth weight. The positive association between parity and foal birth weight is mediated through increased placental weight as well as other pathways. Age is not directly related to foal birth weight and gestation length is not strongly associated with foal birth weight.
Keyword Foal
Birth weight
Mare parity
Gestation
Placenta
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Veterinary Science Publications
 
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Created: Thu, 03 Sep 2009, 08:43:20 EST by Mr Andrew Martlew on behalf of School of Veterinary Science