Selection of a mathematical model to describe the lactation curves of Jersey cattle

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dc.contributor.authorCankaya, Soner
dc.contributor.authorUnalan, Adnan
dc.contributor.authorSoydan, Ercan
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2011
dc.departmentNiğde ÖHÜ
dc.description.abstractThe extent of the usefulness of a lactation model depends on how well it succeeds in imitating the biological lactation process and how well it adjust for environmental and other factors that could influence production. Therefore, the objective of this study was to compare five different lactation curve models (Wood, Cobby and Le Du, Wilmink, Exponential and Parabolic Exponential model), and to find the best model that provided a good description of the lactation curve of Jersey cattle herd. Data used in this study were the first to seventh lactation official milk yield records from monthly recording of 3 630 lactations between 1984 and 2008 in the farm. The results showed that Wood model which has minimum residual standard deviation (3.562), maximum adjusted R(2) value (91.6%) and maximum persistency value (93.3%) performed the best fit to the data and allowed a suitable description of the lactation curve. It was concluded that the Wood model provided accurate estimates of milk yield for all lactation numbers because this model was found to be more superior to the other models. Consequently, the usage of Wood model would provide some useful information on genetic improvement of the Jersey breed under pasture-based dry seasonal production systems.
dc.description.sponsorshipTubitak [TOVAG-107 O 338]
dc.description.sponsorshipThis study was supported by TOVAG-107 O 338 Project of Tubitak. The authors wish to thank the staff of Karakoy State Farm for technical assistance and the Dr. N Ocak for his critical editing of the manuscript.
dc.identifier.endpage35
dc.identifier.issn0003-9438
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85063844072
dc.identifier.scopusqualityQ2
dc.identifier.startpage27
dc.identifier.urihttps://hdl.handle.net/11480/4781
dc.identifier.volume54
dc.identifier.wosWOS:000290875900004
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherARCHIV FUR TIERZUCHT
dc.relation.ispartofARCHIV FUR TIERZUCHT-ARCHIVES OF ANIMAL BREEDING
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectJersey cattle
dc.subjectlactation curve model
dc.subjectmilk yield
dc.subjectpersistency
dc.titleSelection of a mathematical model to describe the lactation curves of Jersey cattle
dc.typeArticle

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