Genetic Analyses for Milk Yield, Lactation Period and Fat Percentage in Brown Swiss Cattle

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dc.contributor.authorZülkadir, Uğur
dc.contributor.authorAytekin, İbrahim
dc.contributor.authorPala, Akın
dc.date.accessioned2020-03-26T17:38:46Z
dc.date.available2020-03-26T17:38:46Z
dc.date.issued2009
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractIn this study, a total of 733 milk yield records of Brown Swiss cows raised at Konuklar State Farm in Konya Province in Turkey were used for estimation of phenotypic and genetic parameters for milk yield, lactation period and fat percentage. The Phenotypic and genetic parameters were estimated by the MTDFREML program using Multiple Trait Animal Model. The model included individual, permanent environment and errors as random effects, year and season of calving, parity, year and age as fixed effects and days in milk as a covariate for milk yield; milk yield as a covariate for lactation period and milk yield and lactation period as covariate for fat percentage. Genetic parameters and breeding value of cow, sire and dam for milk yield in kg, for lactation period in days and for fat percentage in percent were estimated. Cow breeding values ranged from -3006-1724 kg for milk yield, from 10.81-14.22 days for lactation period and from -1.48-0.97% for fat percentage. Likewise, dam breeding values ranged from -1628-862 kg, from -5.69-7.74 days and from -0.76-0.48% for the same traits, respectively. Sire breeding value ranged between -1129 and 862 kg, -8.63 and 5.73 days and -0.68 and 0.83% for the above mentioned traits, respectively. Estimates of heritability were 0.33, 0.11 and 0.39 for milk yield, lactation period and fat percentage, respectively. The genetic correlation between milk yield and fat percentage was positive and high (0.95), whereas the genetic correlation between lactation period and milk yield and between lactation period and fat percentage was negative, -0.49 and -0.73, respectively. Repeatability estimates were 0.34, 0.47 and 0.54 for the same traits, respectively.en_US
dc.identifier.endpage862en_US
dc.identifier.issn1680-5593en_US
dc.identifier.issn1993-601Xen_US
dc.identifier.issue5en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage857en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12395/23567
dc.identifier.volume8en_US
dc.identifier.wosWOS:000265889000007en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherMEDWELL ONLINEen_US
dc.relation.ispartofJOURNAL OF ANIMAL AND VETERINARY ADVANCESen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectBreeding valuesen_US
dc.subjectbrown swissen_US
dc.subjectmilk traitsen_US
dc.subjectmultiple traitsen_US
dc.titleGenetic Analyses for Milk Yield, Lactation Period and Fat Percentage in Brown Swiss Cattleen_US
dc.typeArticleen_US

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