ESTIMATES OF THE TRENDS COMPONENTS IN THE MILK YIELD OF HOLSTEIN FRIESIAN COWS

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dc.contributor.authorTutkun, Muhittin
dc.contributor.authorYener, Sadik Metin
dc.date.accessioned2024-04-24T17:47:34Z
dc.date.available2024-04-24T17:47:34Z
dc.date.issued2018
dc.departmentDicle Üniversitesien_US
dc.description.abstractThis study was carried out to estimate the trend components (the phenotypic, genetic and environmental trends) for 305-day milk yield in Holstein Friesian Cattle raised between the years 1989-2012 at the Ceylanpinar State Dairy Farm. In order to estimate the trend components 6165 lactation records of 2055 Holstein cows was analysed. It was found that the lactation period average was 313.23 +/- 28.47 days, the annual average lactation milk yield was 6197.88 +/- 1681.35 kg and adjusted 305-day lactation milk yield was found to be 6164.41 +/- 1713.90 kg. In order to estimate of genetic parameters, standardized milk yield according to 305-day lactation period (lactation 1, 2 and 3) were analysed primarily with repeated-measured animal models by using MTDFREML programs. According to the data obtained in the study, the lactation length, average lactation milk yield and average 305-days milk yield adjusted were calculated as 313.23 +/- 28.47 days, 6197.88 +/- 1681.35 kg and 6164.41 +/- 1713.90 kg, respectively. The phenotypic, environmental and genetic trends for 305-days milk yield were found to be -70.72 kg/year, -70.53 kg/year and -0.19 kg/year, respectively.en_US
dc.identifier.endpage30en_US
dc.identifier.issn2285-5750
dc.identifier.issn2393-2260
dc.identifier.issue1en_US
dc.identifier.startpage23en_US
dc.identifier.urihttps://hdl.handle.net/11468/22607
dc.identifier.volume61en_US
dc.identifier.wosWOS:000448065500004
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.language.isoenen_US
dc.publisherUniv Agricultural Sciences & Veterinary Medicine Bucharesten_US
dc.relation.ispartofScientific Papers-Series D-Animal Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCeylanpinaren_US
dc.subjectHolsteinen_US
dc.subjectGenetic Trendsen_US
dc.subjectPhenotypic Trendsen_US
dc.titleESTIMATES OF THE TRENDS COMPONENTS IN THE MILK YIELD OF HOLSTEIN FRIESIAN COWSen_US
dc.titleESTIMATES OF THE TRENDS COMPONENTS IN THE MILK YIELD OF HOLSTEIN FRIESIAN COWS
dc.typeArticleen_US

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