Abstract
Comparisons of Pr protein amounts in horse sera have been performed using Mancini et al.’s (1965) immunodiffusion technique. Relative values against a chosen standard of 100 % were determined for a total of 435 horses.
There was considerable variation between horses, the highest Pr value being 125 % and the lowest 50 % of the standard. In animals of the same Pr phenotype the mean Pr values were significantly higher (P < 0.001) in foals than in mares. In Norwegian Trotter horses the Pr value of Pr NN animals was significantly higher than that of Pr SS phenotypes, whereas the mean Pr values of Pr SS was significantly higher than that of Pr UU Warmblood Trotter horses, the Pr value of Pr SS being 90 % and the Pr-UU 80 % of that of Pr NN.
No difference between sexes with regard to Pr values was found.
Keywords: horse, serum, Pr phenotypes, relative Pr quantities
Sammendrag
Ved bruk av Mancini et al.’s (1965) immundiffusjons-teknikk er det foretatt sammenligninger av konsentrasjoner av Pr-protein i hestesera. Relative verdier i forhold til en valgt standard på 100 % blebestemt for i alt 435 hester.
Det var stor variasjon mellom nestene. Den høyeste Pr-verdi var 125 % og den laveste 50 % av standarden. Hos dyr med den samme Pr-fenotype var middelverdiene signifikant høyere hos føll enn hos hopper. Hos norske traverhester var Pr-verdiene signifikant høyere hos NN-dyr enn hos dyr med Pr-fenotype SS, mens middelverdiene hos SS-dyr var signifikant høyere enn hos varmblods-traverhester med Pr-fenotype UU. Pr-verdiene for Pr-SS var 90 % og for Pr-UU 80 % av tilsvarende verdi for Pr-NN.
Det ble ikke funnet noen forskjell på Pr-verdiene mellom kjønnene.
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