Please use this identifier to cite or link to this item: https://dspace.ctu.edu.vn/jspui/handle/123456789/71186
Full metadata record
DC FieldValueLanguage
dc.contributor.authorKoyama, Keisuke-
dc.contributor.authorTakahashi, Takayoshi-
dc.date.accessioned2021-12-22T09:26:41Z-
dc.date.available2021-12-22T09:26:41Z-
dc.date.issued2020-
dc.identifier.issn0916-8818-
dc.identifier.urihttps://dspace.ctu.edu.vn/jspui/handle/123456789/71186-
dc.description.abstractModern genetic improvement in dairy cattle is directed towards improvement of fertility; however, reproduction traits generally exhibit a genetic antagonism with milk yield. Herein, we aimed to clarify the effects of sire predicted transmitting ability (PTA) for daughter pregnancy rate (DPR) on the reproductive performance and milk yield of daughters in Japanese dairy herds. We conducted a retrospective cohort study on four dairy herds in eastern Hokkaido, Japan, using 1,612 records from 1,018 cows with first, second, or third calvings between March 2015 and September 2018. First, we classified sires into three groups based on the tertile value of their DPR estimate: ≤ -2.2 (low), -2.1 to -0.4 (intermediate), and ≥ -0.3 (high). Subsequently, we compared the sire PTA estimates, reproductive performance, and milk production among DPR groups for each parity of the daughters. In the first and second parity, the hazard of pregnancy by 200 days postpartum was highest in cows from the high-DPR group (P < 0.05); in the third parity, it was unaffected by DPR group.vi_VN
dc.language.isoenvi_VN
dc.relation.ispartofseriesJournal of reproduction and development;Vol. 66, No. 05 .- P.445-452-
dc.subjectDaughter pregnancy rate (DPR)vi_VN
dc.subjectFertilityvi_VN
dc.subjectGenetic selectionvi_VN
dc.subjectPTAMvi_VN
dc.subjectRetrospective cohort studyvi_VN
dc.titleRelationship between sire predicted transmitting ability for daughter pregnancy rate and daughter's reproductive performance and milk production in Japanese dairy herdsvi_VN
dc.typeArticlevi_VN
Appears in Collections:The journal of reproduction and development

Files in This Item:
File Description SizeFormat 
_file_
  Restricted Access
2.4 MBAdobe PDF
Your IP: 18.224.38.170


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.