22 research outputs found

    Repeatability of subjective grading in fur animals I. Grading of live foxes (Vulpes vulpes)

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    Repeatabilities of subjective grading were studied for colour and body size in silver foxes, and for general appearance in various colour types of the fox. Statistically significant differences between scoring times were found for each trait. However, the judge factor had the greatest effect on scores for colour and body size in silver foxes. There were differences between the mean scores in general appearance given for the various colour types. Colour tended to be easier to judge than body size or general appearance. The coefficients of repeatability were 0.74 for colour, 0.55 for body size and 0.57 for general appearance. The repeatabilities among the various judges were 0.68-0.82 for colour and 0.51-0.59 for body size. Among the various colour types the ”silver types” seemed to be easier to judge than the ”golden types”. The repeatabilities were 0.57 to 0.59 vs, 0.50 to 0.55 for general appearance

    Repeatability of subjective grading in fur animals III. Grading of live blue foxes in different environmental conditions

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    Association between repeatedly scored body size and fur characteristics were studied in live blue foxes. Gradings in cages and outside cages in lamplight and daylight were also compared. Colour tended to be easier and clarity more difficult to evaluate than the other traits. Differences between judges in accuracy of grading were greater than between various grading environments. The grading was more reliable outside cages than within cages. The most uniform results were obtained when the same judge graded the animals in the same environmental conditions

    Ihmiseen luottava kettu voi hyvin

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    Siniketun ja hopeaketun luottavaisuus ihmistÀ kohtaan on kohtalaisesti periytyvÀ ominaisuus. Siten luottavaisuutta voidaan pysyvÀsti edistÀÀ valinnan avulla. Kettujen luottavaisuuden lisÀÀntyminen nÀyttÀÀ parantavan pentutulosta. PelkkÀ luottavaisuus ei kuitenkaan takaa hyvÀÀ turkislaatua.vo

    Naudanlihatuotanto Isossa-Britaniassa

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    vKirjasto Aj-

    Genetical and environmental factors affecting slaughter traits in beef production experiments in field

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    vokKirjasto Aj-KLihanaudan teurasominaisuuksiin vaikuttavia perinnöllisiÀ ja ulkoisia tekijöitÀ kenttÀkokeiss

    Teurasnaudan kasvukokeet yksityisillÀ tiloilla

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    Kirjoitus perustuu maataloustutkimuksen pÀivillÀ HelsingissÀ 13.2.1974 pidettyyn esitelmÀÀnvokKirjasto Aj-ktillvÀxtförsök med slaktnöt pÄ privata gÄrda

    Naudanlihatuotannon tarkkailu kÀytÀnnössÀ

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    vKirjasto Aj-
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