CHARACTERISATION OF COAT COLOUR IN THE SLOVENIAN POSAVJE HORSE

Different approaches and classification systems have been established to describe equine coat colour, which varies between breeds countries. In the present study, we first characterised colour variability in Slovenian Posavje Horse applying spectrophotometry following CIE L*a*b system. As derived from system of Sponenberg (light bay, mahogany brown seal brown), phenotype categories could be confirmed by spectrophotometric data. Furthermore, values revealed comparable high phenotypic bay breed, darker shades were associated with ASIP MC1R genotype combination A/a E/E. represents an effective tool characterise quantify horses, especially chestnut for underlying genetic background variation remains unknown.Key words: Horse; MC1R; ASIP; colour; spectrophotometry; KARAKTERIZACIJA BARVE DLAKE PRI POSAVSKEM KONJU Izvle?ek: Za opis barv konj se uporabljajo razli?ni pristopi klasifikacijski sistemi, ki razlikujejo med posameznimi pasmami državami. V raziskavi smo najprej opredelili razli?ne barve dlake pri posavskem konju z metodo barvne spektrofotometrije po sistemu L*a*b*. Fenotipsko razdelitev Sponenbergu bay/svetli rjavec, bay/rjavec, bay/kostanjev, brown/temni rjavec brown/?rnkast rjavec) potrdili s spektrofotometri?nimi podatki. Vrednosti so pokazale primerljivo visoko fenotipsko variabilnost rjave barve, tem bili temnejši odtenki povezani kombinacijo genotipa Barvna spektrofotometrija predstavlja u?inkovito orodje za kvalitativno kvantitativno opredelitev/dolo?anje konjih, zlasti lisjakih, katerih še vedno ni znana genska osnova variabilnosti v barvi dlake.Klju?ne besede: posavski konj; barva dlake; spektrofotometrija;