Estimation of the repeatability of holstein milk yields via various statistical methods

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dc.contributor.authorErsöz, Taner
dc.contributor.authorErtuğrul, Okan
dc.date.accessioned2024-09-29T16:29:04Z
dc.date.available2024-09-29T16:29:04Z
dc.date.issued2018
dc.departmentKarabük Üniversitesien_US
dc.description.abstractThis study aims at estimation the repeatability of vital yield characteristics through the RestrictedMaximum Likelihood (REML) method by the way of using data with regards to the calving intervals, lactationperiod, lactation milk yield, dry period and recovered milk yield (2x305 Max.) related to the Holstein herd raised inCeylanpınar Agriculture Enterprise and comparing the repeatability estimates determined with the help of theREML method, Minimum Quadratic Unbiased Estimation (MQUE), Variance Analysis (VA) and MaximumLikelihood (ML) method. The number of records used for milk yield in the statistical analysis is 1457. Therepeatability related to the milk yield characteristics was estimated to be between 0,005 and 0,244. Because of thefact that the repeatability was estimated to be low; it is believed that it might be useful to make the selection basedon the mean of two or more records. Estimating the repeatability; the Minimum Quadratic Unbiased Estimationmethod is most likely to give reliable results for the calving period, dry period and lactation period that meets ther>2Sr condition while REML and ML methods are most likely to give the most reliable results for lactation milkyield and MQUE, VA, REML and ML methods are most likely to give the best results for the adjusted milk yield(2x350 Max.).en_US
dc.identifier.doi10.13002/jafag4452
dc.identifier.endpage84en_US
dc.identifier.issn1300-2910
dc.identifier.issue1en_US
dc.identifier.startpage75en_US
dc.identifier.trdizinid327609en_US
dc.identifier.urihttps://doi.org/10.13002/jafag4452
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/327609
dc.identifier.urihttps://hdl.handle.net/20.500.14619/10230
dc.identifier.volume35en_US
dc.indekslendigikaynakTR-Dizinen_US
dc.language.isoenen_US
dc.relation.ispartofGaziosmanpaşa Üniversitesi Ziraat Fakültesi Dergisien_US
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectZiraat Mühendisliğien_US
dc.titleEstimation of the repeatability of holstein milk yields via various statistical methodsen_US
dc.typeArticleen_US

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