Relationship between age at first start and racing performance in Polish Thoroughbreds and Arab horses

Sobczyńska, Magdalena

doi:10.5194/aab-53-639-2010

Cited by 4 publications

(4 citation statements)

References 16 publications

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“…Other studies analysing data from TBs, 4,5 and Standardbred and Finnhorse trotters, 6 also reported higher earnings of early foals compared to late foals. Consistent with a previous study, 9 we did not observe a difference in the number of races run by the end of the second and third years of life between earlier and later-born foals.…”

Section: Discussionsupporting

confidence: 92%

“…In Finland, Standardbred and Finnhorse trotters born early in the season were faster, had greater earnings and larger number of placings than horses born late in the season 6 . Other studies have not reported an association between DoB and racing performance milestones or outcomes or, 7–9 conversely, reported that earlier born foals had a shorter racing career than those born later 10 …”

Section: Introductionmentioning

confidence: 97%

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Date of birth and purchase price as foals or yearlings are associated with Thoroughbred flat race performance in the United Kingdom and Ireland

Arango‐Sabogal

Mouncey

Mestre

et al. 2022

Veterinary Record Open

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Background: Thoroughbred breeders aim to have foals born early in the season, but scientific evidence on the advantages for race performance is scarce and contradictory. Methods: The association between date of birth and purchase price as foal/yearling, with race performance by the end of the second and third years of life of Thoroughbreds racing in flat races in the United Kingdom (UK) and Ireland (IRE) was assessed using negative binomial and zero-inflated negative binomial models on the entire 2014-2015 UK/IRE foal crops (n = 28,282). Results: In total, 6666 and 9456 horses raced in UK/IRE flat racing by the end of their second and third years of life. Prize money and prize money per start decreased with each additional day beyond 1 January that the foal was born. Purchase price as foal and yearling was negatively associated with the number of races run, while it was positively associated with prize money and prize money per start by the end of the third year of life. Conclusions: Foals born early in the season had higher earnings by the end of their second and third years of life than foals born later. Differences were more marked among males than females. The most expensive horses sold as foals or yearlings ran fewer races but earned more prize money and prize money per start than less expensive horses. Results from this population-based analyses may inform strategies and management practices aiming to maximise horses' racing performance potential and increase financial returns.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 97%

Date of birth and purchase price as foals or yearlings are associated with Thoroughbred flat race performance in the United Kingdom and Ireland

Arango‐Sabogal

Mouncey

Mestre

et al. 2022

Veterinary Record Open

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“…Although many horses have their first racecourse start at 2 years of age, some may not commence racing until 3–5 years of age (More ). Further studies indicate that the average age at first start for Thoroughbreds is two and a half years (Sobczynska ). Horses that make a racecourse start at a young age are described as ‘precocious’ with indications that early maturity may be influenced by variation at the myostatin gene ( MSTN ).…”

Section: Introductionmentioning

confidence: 99%

A genomic prediction model for racecourse starts in the Thoroughbred horse

et al. 2019

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Durability traits in Thoroughbred horses are heritable, economically valuable and may affect horse welfare. The aims of this study were to test the hypotheses that (i) durability traits are heritable and (ii) genetic data may be used to predict a horse's potential to have a racecourse start. Heritability for the phenotype 'number of 2-and 3-year-old starts' was estimated to be h 2 m = 0.11 AE 0.02 (n = 4499). A genome-wide association study identified SNP contributions to the trait. The neurotrimin (NTM), opioid-binding protein/cell adhesion molecule like (OPCML) and prolylcarboxypeptidase (PRCP) genes were identified as candidate genes associated with the trait. NTM functions in brain development and has been shown to have been selected during the domestication of the horse. PRCP is an established expression quantitative trait locus involved in the interaction between voluntary exercise and body composition in mice. We hypothesise that variation at these loci contributes to the motivation of the horse to exercise, which may influence its response to the demands of the training and racing environment. A random forest with mixed effects (RFME) model identified a set of SNPs that contributed to 24.7% of the heritable variation in the trait. In an independent validation set (n = 528 horses), the cohort with high genetic potential for a racecourse start had significantly fewer unraced horses (16% unraced) than did low (27% unraced) potential horses and had more favourable race outcomes among those that raced. Therefore, the information from SNPs included in the model may be used to predict horses with a greater chance of a racecourse start.

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“…It is well known that evaluation of sires is more advanced compared with dams. Relationships between performance test and racing results have been estimated by many authors (e.g., Sobczyńska, 2010). Although these correlations are usually positive, new approaches to performance and genetic evaluation in horses are still in demand (Luehrs-Behnke et al, 2002;Lewczuk et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Entropy analysis of performance test results of warmblood stallions

Dobek¹,

Borowska²,

Moliński³

et al. 2012

J. Anim. Feed Sci.

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The objective of the present study was to evaluate relationships among recorded traits in a 100-day stationary performance test in warmblood stallions in Poland. The possibility of reducing the number of recorded traits was assessed as well. The data are from 582 warmblood stallions undergoing a 100-day test in 2002-2010 at two Polish training centres. The stallions were pre-selected on nine single conformation and movement traits and then inspected on nineteen performance traits scored by the head of the training centre, judging commission, and test riders. To establish the relationships within the data, entropy analysis was used. Entropy and conditional entropy in relation to the final assessment, as well as joint entropy, mutual information, and their quotient were estimated. High relationships between traits depend on their source of variability (head of training centre, judging commission, test rider). Variability over time of ranks for many traits is influenced by the differences in the genetic structure of the stallions tested in the last ten years. These estimates of conditional entropy can be helpful in derivation of weights for the recorded conformation, movement, and performance traits.

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Relationship between age at first start and racing performance in Polish Thoroughbreds and Arab horses

Cited by 4 publications

References 16 publications

Date of birth and purchase price as foals or yearlings are associated with Thoroughbred flat race performance in the United Kingdom and Ireland

Date of birth and purchase price as foals or yearlings are associated with Thoroughbred flat race performance in the United Kingdom and Ireland

A genomic prediction model for racecourse starts in the Thoroughbred horse

Entropy analysis of performance test results of warmblood stallions

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