{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360848665111816960.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.5194/aab-59-45-2016"}},{"identifier":{"@type":"URI","@value":"https://aab.copernicus.org/articles/59/45/2016/aab-59-45-2016.pdf"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Effects of parity and season on pregnancy rates after the transfer of  embryos to repeat-breeder Japanese Black beef cattle"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>Abstract. Repeat-breeder (RB) cows are a major source of economic waste due to their decreased fertility. Embryo transfer (ET) is an alternative tool to improve the fertility of RB cows. The aims of the present study were to evaluate the effects of recipient parity and the season on pregnancy rates following ET in RB Japanese Black beef cattle. Embryos were transferred nonsurgically to recipients, consisting of 155 heifers (< 2 years old) and 172 cows (< 8 years old), which were defined as RB cattle. Of the recipients that were presented for ET, 57 recipients received a fresh embryo and 270 recipients received a frozen embryo. There were no differences in the pregnancy rates between cattle that received fresh embryos or frozen embryos. The rates of recipients with pregnancy, abortion, stillbirth, and normal calving were similar between heifers and cows. In cows, the pregnancy rates were lower (P < 0.05) in summer (June to August) than in spring (March to May) and winter (December to February). In heifers, however, there were no differences in the pregnancy rates among the seasons. Our findings indicate that in RB Japanese Black beef cattle, the parity of the recipients does not have an effect on the pregnancy rates following the transfer of fresh and frozen embryos. However, heat stress may affect reproductive performance in RB Japanese Black cows.\n                    </jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380848665111816961","@type":"Researcher","foaf:name":[{"@value":"T. Ono"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848665111816965","@type":"Researcher","foaf:name":[{"@value":"T. Isobe"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848665111816960","@type":"Researcher","foaf:name":[{"@value":"Y. Morita"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848665111816962","@type":"Researcher","foaf:name":[{"@value":"L. T. K. Do"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848665111816964","@type":"Researcher","foaf:name":[{"@value":"F. Tanihara"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848665111816967","@type":"Researcher","foaf:name":[{"@value":"M. Taniguchi"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848665111816963","@type":"Researcher","foaf:name":[{"@value":"M. Takagi"}]},{"@id":"https://cir.nii.ac.jp/crid/1380848665111816966","@type":"Researcher","foaf:name":[{"@value":"T. Otoi"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"23639822"}],"prism:publicationName":[{"@value":"Archives Animal Breeding"}],"dc:publisher":[{"@value":"Copernicus GmbH"}],"prism:publicationDate":"2016-01-26","prism:volume":"59","prism:number":"1","prism:startingPage":"45","prism:endingPage":"49"},"reviewed":"false","dc:rights":["https://creativecommons.org/licenses/by/3.0/"],"url":[{"@id":"https://aab.copernicus.org/articles/59/45/2016/aab-59-45-2016.pdf"}],"createdAt":"2016-01-27","modifiedAt":"2021-01-27","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=S","dc:title":"S"},{"@id":"https://cir.nii.ac.jp/all?q=Science","dc:title":"Science"},{"@id":"https://cir.nii.ac.jp/all?q=Q","dc:title":"Q"},{"@id":"https://cir.nii.ac.jp/all?q=Agriculture","dc:title":"Agriculture"},{"@id":"https://cir.nii.ac.jp/all?q=SF1-1100","dc:title":"SF1-1100"},{"@id":"https://cir.nii.ac.jp/all?q=Animal%20culture","dc:title":"Animal culture"},{"@id":"https://cir.nii.ac.jp/all?q=QL1-991","dc:title":"QL1-991"},{"@id":"https://cir.nii.ac.jp/all?q=Zoology","dc:title":"Zoology"}],"project":[{"@id":"https://cir.nii.ac.jp/crid/1040000782247214080","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"25304039"},{"@type":"JGN","@value":"JP25304039"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-25304039/"}],"notation":[{"@language":"ja","@value":"モンゴルにおける交雑種ヤクに発生する不妊性の実態解明と交雑種オスからの産子作出"},{"@language":"en","@value":"Elucidation of male sterility occurred in cattle-yak hybrid and production of calf from the hybrid male in Mongolia"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360011144830540160","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Factors affecting success of embryo collection and transfer in large dairy herds"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574094583240192","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Heat stress and seasonal effects on reproduction in the dairy cow—a review"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574096021466368","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Effects of season on the maintenance requirements of mature beef cows"}]},{"@id":"https://cir.nii.ac.jp/crid/1360848657018172032","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Cryopreservation for bovine embryos in serum-free freezing medium containing silk protein sericin"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855570502052864","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Development of cultured bovine embryos after exposure to high temperatures in the physiological 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