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Pregled bibliografske jedinice broj: 197985

Zbornik radova

Autori: Kapš, Miroslav; Čurik, Ino; Baban, Mirjana
Naslov: Genetic analysis of caliber index in Lipizzan horse using random regression
Izvornik: Book of Abstracts of the 56th Annual Meeting of the European Association for Animal Production / Van der Honing, Ynze (ur.). - Uppsala : Wageningen Academic Publishers , 2005. 28-28.
Skup: 55th Annual Meeting of the European Association for Animal Production
Mjesto i datum: Uppsala, Švedska, 5-8.06.2005
Ključne riječi: Caliber Index; Lippizan Horse; Random Regression
Sažetak:
The variability of the caliber index in Lipizzan horses was studied. The caliber index was defined as (heart girth / height at withers)*(cannon bone circumference / height at withers)*1000. The analysis included measurements (taken at 6, 12, 24 and 36 months of age) of 679 horses born between 1931 and 1999. The corresponding pedigree file consisted of 4786 horses. Covariance functions for the caliber index were estimated using a random regression model. Sex, age of dam and stud-year-season interaction were defined as fixed effects while direct additive genetic and permanent environment were defined as random effects. Polynomial functions of order four were adequate to explain additive genetic functions. The average caliber index increased from 119.1 to 135.4 at 6 to 36 months of age. The estimated heritabilities ranged from 0.16 to 0.20. Genetic correlations and permanent environment between consecutive measurements ranged from 0.28 to 0.77, and 0.78 to 0.99, respectively. The estimated covariance functions demonstrated heterogeneity of covariances and proved to be an adequate tool in estimating genetic parameters and trends of caliber index in Lipizzan horses.
Vrsta sudjelovanja: Poster
Vrsta prezentacije u zborniku: Sažetak
Vrsta recenzije: Međunarodna recenzija
Projekt / tema: 0178031
Izvorni jezik: ENG
Kategorija: Znanstveni
Znanstvena područja:
Poljoprivreda (agronomija)



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