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Uticaj uzrasta pri prvoj oplodnji na reproduktivne, proizvodne i funkcionalne osobine krava simentalske rase

dc.creatorPetrović, Milun D.
dc.creatorBogdanović, Vladan
dc.creatorBogosavljević-Bošković, Snežana
dc.creatorDjoković, Radojica
dc.date.accessioned2020-12-17T19:20:10Z
dc.date.available2020-12-17T19:20:10Z
dc.date.issued2008
dc.identifier.issn0350-1205
dc.identifier.urihttp://aspace.agrif.bg.ac.rs/handle/123456789/1819
dc.description.abstractThe effect of cow age at first insemination on productive and reproductive traits, as well as on longevity and lifetime production ones was examined in the Simmental cows housed at the 'Zlatiborski Suvati' (Mt. Zlatibor Pastures) Farm. The general linear model was used to calculate linear regression coefficients for the effect of age at first insemination on productive, reproductive traits, longevity traits and lifetime production traits The calculated linear regression coefficients suggested that the age at first insemination had a statistically significant effect (P lt 0.05) on milk, milk fat and 4% fat milk production in whole lactations (bxy=1.508, bxy=0.056 and bxy=1.464), a very high significant effect (P lt 0.001) on the age at culling and cow utilisation index ((bxy=1.386 and bxy=-0.020), and no significant effect (P>0.05) on other longevity traits. The age of cows at first insemination did not significantly affect (P>0.05) fertility and lifetime milk and milk-fat production traits. The presented results suggest that cow age at first insemination should be included in the models used in estimating breeding values of dairy cows.en
dc.description.abstractUticaj uzrasta krava pri prvoj oplodnji na proizvodne i reproduktivne osobine i osobine dugovečnosti i životne proizvodnje ispitivan je kod krava simentalske rase smeštenih na farmi 'Zlatiborski suvati'. Opštim linearnim modelom izračunati su koeficijenti linearne regresije uticaja uzrasta pri prvoj oplodnji na proizvodne i reproduktivne osobine, kao i osobine dugovečnosti i životne proizvodnje Na osnovu izračunatih koeficijenata linearne regresije uzrast pri prvoj oplodnji statistički je značajno uticao (P lt 0.05) na proizvodnju mleka, mlečne mast i 4% masnog mleka u celim laktacijama (bxy=1.508, bxy=0.056 i bxy=1.464), vrlo visoko značajno (P lt 0.001) na uzrast pri izlučenju i indeks iskorišćavanja krava (bxy=1.386 i bxy=-0.020), dok na ostale osobine dugovečnosti nije imao signifikantan uticaj (P>0.05). Uzrast krava pri prvoj oplodnji nije imao značajnog uticaja (P>0.05) na osobine plodnosti i životne proizvodnje mleka i mlečne masti. Na osnovu prikazanih rezultata uzrast krava pri prvoj oplodnji trebalo bi uvrstiti u modele za procenu odgajivačke vrednosti mlečnih krava.sr
dc.publisherUniverzitet u Novom Sadu - Poljoprivredni fakultet, Novi Sad i Naučni institut za ratarstvo i povrtarstvo, Novi Sad
dc.rightsopenAccess
dc.sourceSavremena poljoprivreda
dc.subjectSimmental breeden
dc.subjectregressionen
dc.subjectfertilityen
dc.subjectmilk performanceen
dc.subjectlongevityen
dc.subjectlifetime productionen
dc.subjectsimentalska rasasr
dc.subjectregresijasr
dc.subjectplodnostsr
dc.subjectmlečnostsr
dc.subjectdugovečnostsr
dc.subjectživotna proizvodnjasr
dc.titleThe effect of age at first insemination on reproductive, productive, longevity and lifetime production traits in Simmental cowsen
dc.titleUticaj uzrasta pri prvoj oplodnji na reproduktivne, proizvodne i funkcionalne osobine krava simentalske rasesr
dc.typearticle
dc.rights.licenseARR
dc.citation.epage157
dc.citation.issue3-4
dc.citation.other57(3-4): 150-157
dc.citation.spage150
dc.citation.volume57
dc.identifier.fulltexthttp://aspace.agrif.bg.ac.rs/bitstream/id/708/1816.pdf
dc.identifier.rcubconv_2603
dc.identifier.rcubhttps://hdl.handle.net/21.15107/rcub_agrospace_1819
dc.type.versionpublishedVersion


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