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001-es BibID:	BIBFORM049460
Első szerző:	Posta János (informatika tanár, agrármérnök)
Cím:	The effect of selected factors on length of show-jumping career of horses in Hungary. Pilot study / Posta János, Balogh Péter, Mihók Sándor
Dátum:	2013
Megjegyzések:	The main aim of this study was the evaluation of the risk factors of ♭age at fi rst competition result' and ♭maximum diffi culty' of ever completed track based on sport competition results of Hungarian show-jumping horses. Competition results of 2605 geldings recorded between 1996 and 2009 in show-jumping competitions were used in the analysis. The dataset contained 30% right-censored records. The discrete measurement of time, the number of years spent in competition, was chosen as dependent variable. The evaluation model contained the fixed effects of birth year, age at first competition result and the maximum difficulty of ever completed track. Both fixed effects were highly significant (p<0.01). The mathematical evaluation was carried out using Kaplan-Meier procedureand Cox Regression in SPSS 13.0. The culling risk was 5.5 times higher for horses competing only in the easiest category then horses which ever competed in the heaviest category. The younger the horse started competition, the longer it stayed in competition. The cumulated survival functions also strengthened these results. Overall, it can be concluded that horses with talent to perform at the most diffi cult categories spent more time in sport competitions. Furthermore, the start of the show-jumping career in earlier age showed smaller risk ratios of leaving competition fi elds than for horses starting their career in later age.
Tárgyszavak:	Agrártudományok Állattenyésztési tudományok idegen nyelvű folyóiratközlemény hazai lapban sportló díjugratás
Megjelenés:	Állattenyésztés és takarmányozás. - 62 : 2 (2013), p. 105-113. -
További szerzők:	Balogh Péter (1970-) (agrármérnök) Mihók Sándor (1950-) (agrármérnök)
Pályázati támogatás:	OTKA PD 83885 OTKA
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
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