The relationship of leptin and thyroid hormones with milk yield and some fertility parameters in Simmental dairy cows during transition period

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dc.authoridYasa Duru, Sibel/0000-0002-6803-6339
dc.authoridŞenol, Ali/0000-0003-4080-7776
dc.authoridDuru, Özkan/0000-0002-8792-442X
dc.contributor.authorDuru, Özkan
dc.contributor.authorDevrim, Alparslan Kadir
dc.contributor.authorMacun, Hasan Ceyhun
dc.contributor.authorDuru, Sibel Yasa
dc.contributor.authorŞenol, Ali
dc.date.accessioned2025-01-21T16:34:40Z
dc.date.available2025-01-21T16:34:40Z
dc.date.issued2021
dc.departmentKırıkkale Üniversitesi
dc.description.abstractIn this study, transition period cows were used to test the hypothesis that serum levels of leptin and thyroid hormones would correlate the production efficiency such as milk yield, body condition score, and fertility in dairy cows raised under the same controlled conditions. The study comprised 37 Simmental cows, which were 3 years old and between 257-265 days of gestation. Serum levels of leptin, T3, T4, FT3, and FT4 hormones were measured in blood samples obtained from the animals, which were in the period of 3 weeks before and 3 weeks after delivery. Prepartum serum leptin levels were significantly (p < 0.05) lower in cows having increased milk production compared to the first lactation peak value. Also, postpartum serum FT3 levels were significantly (p < 0.05) lower in cows having milk yield of >= 30 kg. Leptin levels were found to be inversely related with milk production and fertility. FT3 levels exhibited a negative correlation with milk production and similarly T3 levels showed an inverse correlation with body condition score. The present study proposed that routine monitoring of leptin and thyroid hormones would be useful for the reproductive management of cows with breeding problems.
dc.identifier.doi10.3906/vet-2104-84
dc.identifier.endpage1073
dc.identifier.issn1300-0128
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85122632196
dc.identifier.scopusqualityQ3
dc.identifier.startpage1065
dc.identifier.trdizinid519259
dc.identifier.urihttps://doi.org/10.3906/vet-2104-84
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay519259
dc.identifier.urihttps://hdl.handle.net/20.500.12587/24000
dc.identifier.volume45
dc.identifier.wosWOS:000731915100010
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.publisherTubitak Scientific & Technological Research Council Turkey
dc.relation.ispartofTurkish Journal of Veterinary & Animal Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241229
dc.subjectLeptin; thyroid hormones; transition period; milk yield; fertility parameters; dairy cows
dc.titleThe relationship of leptin and thyroid hormones with milk yield and some fertility parameters in Simmental dairy cows during transition period
dc.typeArticle

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