GENETIC PARAMETERS OF FIRST LACTATION MILK YIELD AND FERTILITY TRAITS IN BROWN SWISS CATTLE

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dc.contributor.authorSahin, Aziz
dc.contributor.authorUlutas, Zafer
dc.contributor.authorAdkinson, Asiye Yilmaz
dc.contributor.authorAdkinson, Robert W.
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2014
dc.departmentNiğde ÖHÜ
dc.description.abstractThis research was carried out to estimate variance components and genetic parameters for first lactation milk yield (lactation milk yield, 305-day milk yield, lactation length, and dry period) and some fertility traits (calving interval, gestation length and number of services per conception) of Brown Swiss cattle reared at Konuklar State Farm located in Konya province, Turkey. Data were collected on milk yield traits of 3,769 first lactation Brown Swiss cattle during the period from 1990 to 2008. Variance components, genetic parameters, breeding values, and genetic correlations were estimated using multiple trait derivative free restricted maximum likelihood (MTDFREML) fitting an animal model. Heritability estimates were 0.26, 0.25, 0.10, 0.06, 0.07, 0.06 and 0.03 for lactation milk yield (LMY), 305-day milk yield (305 DMY), lactation length (LL), dry period (DP), calving interval (CI), gestation length (GL), and number of services per conception (NSC), respectively. Genetic correlations between milk yield and fertility traits ranged from 0.31 to 0.95 and phenotypic correlations ranged from -0.026 to 0.75. Breeding values were estimated and used to characterize genetic trends across the time period investigated. The results showed that the first lactation milk yield traits can be used as selection criteria for development of effective genetic improvement programme in Turkish Brown Swiss cattle. In addition, the results indicate the essential for scheming an effective schedule for growth of genetic variability to improve the milk yield traits of Brown Swiss cattle in this farm by way of selection.
dc.identifier.doi10.2478/aoas-2014-0038
dc.identifier.endpage557
dc.identifier.issn2300-8733
dc.identifier.issue3
dc.identifier.scopus2-s2.0-84906987587
dc.identifier.scopusqualityQ2
dc.identifier.startpage545
dc.identifier.urihttps://dx.doi.org/10.2478/aoas-2014-0038
dc.identifier.urihttps://hdl.handle.net/11480/4152
dc.identifier.volume14
dc.identifier.wosWOS:000341358700007
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherWALTER DE GRUYTER GMBH
dc.relation.ispartofANNALS OF ANIMAL SCIENCE
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectBrown Swiss
dc.subjectheritability
dc.subjectmilk yield
dc.subjectdry period
dc.subjectlactation length
dc.titleGENETIC PARAMETERS OF FIRST LACTATION MILK YIELD AND FERTILITY TRAITS IN BROWN SWISS CATTLE
dc.typeArticle

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