Comparison of Different Mathematical Models for Describing the Complete Lactation of Akkaraman Ewes in Turkey

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dc.contributor.authorKeskin, İsmail
dc.contributor.authorDağ, Birol
dc.date.accessioned2020-03-26T17:03:13Z
dc.date.available2020-03-26T17:03:13Z
dc.date.issued2006
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThis study was carried out to investigate the use of three different mathematical models (Wood, Quadratic and Cubic) for describing the lactation curve of Akkaraman ewes. Data were collected from 42 ewes that were three years of age and from the same flock raised in The State Farm of Gozlu in konya Province. All-ewes lambed. in March. They were hand milked twice daily and the first milk test was performed with in the first month after lambing (mean = 27.8 day, SD = 4.26) in an attempt to describe the peak yield. The differences between estimated total milk yields by the models were not significant. The models were adequate for describing total milk yield. The differences between peak yields were not significant. The Wood model estimated the time of peak yield earlier than the other models and observed values (p < 0.01). Especially the Cubic model's peak time was very close to really peak time (34.30 vs. 35.33 days). R 2 values of the models ranged from 85.85% to 96.20%. The Cubic model gave the best R-2 value (p < 0.01). Correlation coefficients between descriptive values of the models changed from 0.32 to 1.00. Total milk yields of the models were highly correlated (above 0.99) with the total milk yield calculated by the Fleischmann method (p < 0.01). As a result the Cubic model showed the best fit to the data collected from Akkaraman ewes and allowed a suitable description of the shape of the lactation curve.en_US
dc.identifier.citationKeskin, İ., Dağ, B., (2006). Comparison of Different Mathematical Models for Describing the Complete Lactation of Akkaraman Ewes in Turkey. Asian-Australasian Journal of Animal Sciences, 19(11), 1551-1555.
dc.identifier.endpage1555en_US
dc.identifier.issn1011-2367en_US
dc.identifier.issue11en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage1551en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12395/20388
dc.identifier.volume19en_US
dc.identifier.wosWOS:000240970200010en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorKeskin, İsmail
dc.institutionauthorDağ, Birol
dc.language.isoenen_US
dc.publisherAsian-Australasian Assoc Animal Production Societiesen_US
dc.relation.ispartofAsian-Australasian Journal of Animal Sciencesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectAkkaramanen_US
dc.subjectewesen_US
dc.subjectlactation curveen_US
dc.subjectmilk yielden_US
dc.subjectmathematical modelen_US
dc.titleComparison of Different Mathematical Models for Describing the Complete Lactation of Akkaraman Ewes in Turkeyen_US
dc.typeArticleen_US

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