{"created":"2023-07-27T04:51:46.449998+00:00","id":64127,"links":{},"metadata":{"_buckets":{"deposit":"79070d5b-91de-46d1-aa84-b800cdd8ec31"},"_deposit":{"created_by":3,"id":"64127","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"64127"},"status":"published"},"_oai":{"id":"oai:tohoku.repo.nii.ac.jp:00064127","sets":["86:198"]},"author_link":["152314","152313"],"item_4_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2006-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"58","bibliographicPageStart":"53","bibliographicVolumeNumber":"3","bibliographic_titles":[{"bibliographic_title":"Journal of Integrated Field Science"}]}]},"item_4_date_62":{"attribute_name":"登録日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2008-05-02","subitem_date_issued_type":"Created"}]},"item_4_date_63":{"attribute_name":"公開日（投稿完了日）","attribute_value_mlt":[{"subitem_date_issued_datetime":"2008-05-02","subitem_date_issued_type":"Created"}]},"item_4_date_65":{"attribute_name":"発行日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2006-03","subitem_date_issued_type":"Created"}]},"item_4_date_80":{"attribute_name":"更新日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2018-01-04","subitem_date_issued_type":"Created"}]},"item_4_description_15":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_4_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Genetic breeding systems for pigs over the last 30 years in Japan are roughly classifiable into three. Local government experiment stations and the national improvement center have used a closedline breeding system. A second is an open breeding system used by private breeders and breeding companies. A third is breeding through introduction of hybrid pigs from foreign countries. The closed line breeding system has produced many excellent breeds from lines that have been selected not only for meat production traits, but also for reproductive traits and meat quality traits. Tokyo-X and Shimofuri-red were completed respectively in 1996 and in 2002. These two lines are breeds for which intramuscular fat was adopted as a direct selection trait. These successes achieved through such breeding are attributable to improved measuring methods of meat production traits and meat quality traits, along with improved statistical breeding methods. Now and in the future, breeding for disease resistance will become an important subject that attracts pig breeders' research efforts. One method of breeding for disease resistance is to select for morbid state as a direct selection trait. Aside from this, an indirect selection exists for immunity traits that are related genetically to disease resistance traits. We examine a breeding strategy that unites these two methods, and are performing selection now. Future selection methods might use marker-assisted selection with markers obtained through QTL analysis, for which candidate gene analyses might be effective.","subitem_description_type":"Abstract"}]},"item_4_description_41":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"紀要類(bulletin)","subitem_description_type":"Other"}]},"item_4_description_66":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"592999 bytes","subitem_description_type":"Other"}]},"item_4_publisher_34":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Field Science Center, Graduate School of Agricultural Science, Tohoku University"}]},"item_4_radio_69":{"attribute_name":"公開範囲","attribute_value_mlt":[{"subitem_radio_item":"学外"}]},"item_4_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2433-6122","subitem_source_identifier_type":"ISSN"}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA12005506","subitem_source_identifier_type":"NCID"}]},"item_4_version_type_16":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"SUZUKI, Keiichi"}],"nameIdentifiers":[{"nameIdentifier":"152313","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"NISHIDA, Akira"}],"nameIdentifiers":[{"nameIdentifier":"152314","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-02-22"}],"displaytype":"detail","filename":"KJ00004370131.pdf","filesize":[{"value":"593.0 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"KJ00004370131.pdf","url":"https://tohoku.repo.nii.ac.jp/record/64127/files/KJ00004370131.pdf"},"version_id":"fb2265a7-b672-4291-940f-a826aec9e4bb"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Challenges of Pig Breeding in Japan","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Challenges of Pig Breeding in Japan"}]},"item_type_id":"4","owner":"3","path":["198"],"pubdate":{"attribute_name":"公開日","attribute_value":"2008-05-02"},"publish_date":"2008-05-02","publish_status":"0","recid":"64127","relation_version_is_last":true,"title":["Challenges of Pig Breeding in Japan"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-07-27T16:03:01.114750+00:00"}