Determination of factors affecting 305-day milk production via path analysis on holstein friesians [Siyah alaca sığırlarda 305 günlük süt verimini etkileyen faktörlerin path (iz) analizi İle belirlenmesi]

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dc.contributor.authorIşçi Güneri Ö.
dc.contributor.authorTakma Ç.
dc.contributor.authorAkbaş Y.
dc.date.accessioned2019-10-27T08:21:30Z
dc.date.available2019-10-27T08:21:30Z
dc.date.issued2015
dc.departmentEge Üniversitesien_US
dc.description.abstractA quantitative trait was affected directly or indirectly by several factors due to relationships among them. It is necessary to identified direct and indirect effects of a factor to reveal all relationships in a detailed way. In this study, total of 11647 305-day milk yield records from the 7 parities of 5047 Holstein Friesian cows were statistically evaluated for determining direct and indirect effects of parity (X1), year of calving (X2) and lactation length (X3) on 305-day milk production (Y) via path analysis. Correlations among 305 day milk yield, parity, year of calving and lactation length were calculated 0.17, 0.43, 0.54 respectively and found statistically significant ((P<0.01). The direct effects of the parity, year of calving and lactation length on 305-day milk production were found PY1=0.12, P21=0.10, P31=0.46 respectively and statistically significant (P<0.01). The indirect U effect of parity via year of calving and S effect via lactation length on 305 day milk yield were found 0.01 and 0.04, respectively. The indirect U effect of year of calving via lactation length and S effect via parity on 305 day milk yield were found 0.31 and 0.02, respectively. Moreover, the indirect U effect of lactation length via year of calving and S effect via parity were found 0.07 and 0.01, respectively and lower. © 2015, KAFKAS UNIVERSITY. All rights reserved.en_US
dc.identifier.doi10.9775/kvfd.2014.12054
dc.identifier.endpage224en_US
dc.identifier.issn1300-6045
dc.identifier.issn1300-6045en_US
dc.identifier.issue2en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage219en_US
dc.identifier.urihttps://doi.org/10.9775/kvfd.2014.12054
dc.identifier.urihttps://hdl.handle.net/11454/26039
dc.identifier.volume21en_US
dc.indekslendigikaynakScopusen_US
dc.language.isotren_US
dc.publisherVeteriner Fakultesi Dergisien_US
dc.relation.ispartofKafkas Universitesi Veteriner Fakultesi Dergisien_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subject305-day milk productionen_US
dc.subjectPath analysisen_US
dc.subjectPath coefficienten_US
dc.subjectRegression analysisen_US
dc.titleDetermination of factors affecting 305-day milk production via path analysis on holstein friesians [Siyah alaca sığırlarda 305 günlük süt verimini etkileyen faktörlerin path (iz) analizi İle belirlenmesi]en_US
dc.typeArticleen_US

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