Determination of some environmental factors on milk yield traits and milk components in Simmental cows

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dc.contributor.authorŞahin, Onur
dc.contributor.authorSoysal, Mehmet İhsan
dc.contributor.authorGürcan, Eser Kemal
dc.date.accessioned2024-10-29T17:55:17Z
dc.date.available2024-10-29T17:55:17Z
dc.date.issued2024
dc.departmentTekirdağ Namık Kemal Üniversitesi
dc.description.abstractThe aim of the study was to determine the effects of various environmental factors on milk yield and milk components in Simmental cows. In the present study, 33,813 milk yield records from 1631 cows and milk samples from 233 cows were used for milk component analysis. Lactation milk yield (LMY) and 305-day yield (305-DMY) were the milk yield characteristics studied. Environmental factors considered for milk yield characteristics included province, calving year, calving month, parity, age, and lactation length. Milk components analyzed were fat percentage (FP), protein percentage (PP), lactose percentage (LP), somatic cell count $(Log_{10}SCC)$, and dry matter (DM). Environmental factors considered for milk components were province, birth year, control month, calving month, and parity. The results indicated that all environmental factors significantly influenced milk yield characteristics (p < 0.01). Specifically, province and birth year significantly affected FP and $Log_{10}SCC$ (p < 0.01), whereas calving month, control month, and parity did not significantly affect FP. Province, birth year, and control month significantly influenced PP and DM (p < 0.01), while calving month and parity did not significantly affect PP. Province was the only significant factor for LP (p < 0.01). Considering all data, the averages of traits were as follows: LMY (5628.1 ± 12.80 kg), 305-DMY (5309.2 ± 11.80 kg), total dry matter yield (TDMY) (22.58 ± 0.51 kg), DM (12.43 ± 0.08%), $Log_{10}SCC$ (2.29 ± 0.04, equivalent to 226239 cells/mL), FP (3.78 ± 0.06%), PP (3.57 ± 0.02%), and LP (4.72 ± 0.01%).
dc.identifier.doi10.55730/1300-0128.4336
dc.identifier.endpage62
dc.identifier.issn1300-0128
dc.identifier.issn1303-6181
dc.identifier.issue1en_US
dc.identifier.startpage51
dc.identifier.trdizinid1242625
dc.identifier.urihttps://doi.org/10.55730/1300-0128.4336
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/1242625
dc.identifier.urihttps://hdl.handle.net/20.500.11776/13933
dc.identifier.volume48
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.relation.ispartofTurkish Journal of Veterinary and Animal Sciences
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectSimmental
dc.subjectmilk yield
dc.subjectenvironmental factors
dc.subjectmilk component
dc.titleDetermination of some environmental factors on milk yield traits and milk components in Simmental cows
dc.typeArticle

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