Weight prediction from linear measures of growing Thoroughbreds

W. B. Staniar, D. S. Kronfeld, R. M. Hoffman, J. A. Wilson, P. A. Harris

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Reason for performing study: Monitoring weight of foals is a useful management practice to aid in maximising athletic potential while minimising risks associated with deviations from normal growth. Objective: To develop predictive equations for weight, based on linear measurements of growing Thoroughbreds (TBs). Methods: Morphometric equations predicting weight from measurements of the trunk and legs were developed from data of 153 foals. The accuracy, precision and bias of the best fitting equation were compared to published equations using a naïve data set of 22 foals. Results: Accuracy and precision were maximised with a broken line relating calculated volumes (Vt+1) to measured weights. Use of the broken line is a 2 step process. Vt+1 is calculated from linear measures (m) of girth (G), carpus circumference (C), and length of body (B) and left forelimb (F). (Formula Presented) If Vt+1<0.27 m3, weight is estimated: Weight (kg) = Vt+1 x 1093. If Vt+1≥0.27 m3: Weight (kg) = Vt+1 x 984 + 24. The broken line was more accurate and precise than 3 published equations predicting the weight of young TBs. Conclusions: Estimation of weight using morphometric equations requires attention to temporal changes in body shape and density; hence, a broken line is needed. Including calculated leg volume in the broken line model is another contributing factor to improvement in predictive capability. Potential relevance: The broken line maximises its value to equine professionals through its accuracy, precision and convenience.

Original languageEnglish (US)
Pages (from-to)149-154
Number of pages6
JournalEquine Veterinary Journal
Volume36
Issue number2
StatePublished - Mar 1 2004

Fingerprint

Weights and Measures
prediction
foals
Leg
legs
carpus
Forelimb
Practice Management
girth
forelimbs
anthropometric measurements
sports
body length
Horses
Sports
horses
monitoring
Growth

All Science Journal Classification (ASJC) codes

  • Equine

Cite this

Staniar, W. B., Kronfeld, D. S., Hoffman, R. M., Wilson, J. A., & Harris, P. A. (2004). Weight prediction from linear measures of growing Thoroughbreds. Equine Veterinary Journal, 36(2), 149-154.
Staniar, W. B. ; Kronfeld, D. S. ; Hoffman, R. M. ; Wilson, J. A. ; Harris, P. A. / Weight prediction from linear measures of growing Thoroughbreds. In: Equine Veterinary Journal. 2004 ; Vol. 36, No. 2. pp. 149-154.
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Staniar, WB, Kronfeld, DS, Hoffman, RM, Wilson, JA & Harris, PA 2004, 'Weight prediction from linear measures of growing Thoroughbreds', Equine Veterinary Journal, vol. 36, no. 2, pp. 149-154.

Weight prediction from linear measures of growing Thoroughbreds. / Staniar, W. B.; Kronfeld, D. S.; Hoffman, R. M.; Wilson, J. A.; Harris, P. A.

In: Equine Veterinary Journal, Vol. 36, No. 2, 01.03.2004, p. 149-154.

Research output: Contribution to journalArticle

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Staniar WB, Kronfeld DS, Hoffman RM, Wilson JA, Harris PA. Weight prediction from linear measures of growing Thoroughbreds. Equine Veterinary Journal. 2004 Mar 1;36(2):149-154.