Dry Period in Cattle: I. Influence on Milk Yield and Reproductive Performance

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dc.contributor.authorKıyıcı, Jale Metin
dc.contributor.authorKöknur, Özlem
dc.contributor.authorKaliber, Mahmut
dc.contributor.departmentZiraat Fakültesitr_TR
dc.date.accessioned2021-09-30T07:09:09Z
dc.date.available2021-09-30T07:09:09Z
dc.date.issued2020-09-04
dc.description.abstractPurpose of this study was to investigate the relations of dry period lengths (DPL) with subsequent lactation (305-d) milk yield (MY) and reproductive performance of Holstein cattle. Data were obtained from 800 Holstein cows raised in a private dairy operation and which were in different parity (2nd, 3rd and ≥4th). DPL was classified in 5 categories as; ≤40, 41-50, 51-60, 61-70 and ≥71 days. The differences in lactation milk yields of experimental DPL groups were not significant. The highest MY (7808.6±135.1 Lt) was obtained from ≥71 days DPL group and the lowest MY (7529.4±159.8 Lt) was obtained from ≤40 days DPL group. DPL had significant effect on the number of inseminations resulted in pregnancy (P<0.01). The greatest pregnancy ratio (53.0%) in the first insemination was obtained from ≤40 days DPL group and the lowest pregnancy ratio (30.8%) was obtained from 61-70 days dry period group. There was a positive correlation (0.056) between DPL and 305-d MY and a highly significant positive correlation (0.141) between DPL and the number of insemination resulted in pregnancy. Present findings revealed that longer DPL might have positive effects on lactation MY, but shorter DPL practices might have better outcomes for pregnancy ratios of the first insemination for this farm.tr_TR
dc.identifier.endpage330tr_TR
dc.identifier.issn/e-issn2148-9297
dc.identifier.issue3tr_TR
dc.identifier.startpage324tr_TR
dc.identifier.urihttps://doi.org/10.15832/ankutbd.512466tr_TR
dc.identifier.urihttp://hdl.handle.net/20.500.12575/75070
dc.identifier.volume26tr_TR
dc.language.isoentr_TR
dc.publisherAnkara Üniversitesitr_TR
dc.relation.isversionof10.15832/ankutbd.512466tr_TR
dc.relation.journalTarım Bilimleri Dergisitr_TR
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıtr_TR
dc.subjectDairy cattletr_TR
dc.subjectDry period lenghttr_TR
dc.subjectHerd managementtr_TR
dc.titleDry Period in Cattle: I. Influence on Milk Yield and Reproductive Performancetr_TR
dc.typeArticletr_TR

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Cilt:26 Sayı:03 (2020)