{"created":"2023-06-19T07:30:40.616916+00:00","id":649,"links":{},"metadata":{"_buckets":{"deposit":"49211e9c-0be2-4954-9165-4b2c4ed1ccf1"},"_deposit":{"created_by":3,"id":"649","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"649"},"status":"published"},"_oai":{"id":"oai:nodai.repo.nii.ac.jp:00000649","sets":["47:48:119:136"]},"author_link":["3683","3682"],"item_1_biblio_info_12":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016-03-15","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"204","bibliographicPageStart":"189","bibliographicVolumeNumber":"60","bibliographic_titles":[{}]}]},"item_1_description_10":{"attribute_name":"抄録(日)","attribute_value_mlt":[{"subitem_description":"エミューは環境適応性に優れた走鳥類で，北海道・網走市では新規家禽として，そのオイル（機能性物質）生産を目的に飼育・増殖されている。しかし，本鳥に関する情報は内外とも少ないことから，筆者は新規産業鳥として，その生産向上に関わる事項について独自に調査してきた。本稿では，文献を参考にしながらその内容をまとめた。ペアリング後，交尾は早いペアーで14日目，遅いのは74日目で確認された。産卵期間は，11～翌年5月までの7ヶ月間であった。産卵数は2～3月に多く，全体の56.73％であった。雌・雄同比率繁殖群の産卵数（雌1羽当たりの産卵数が18.50個）は，10羽以上の集団および雌・雄異比率繁殖群（それぞれ雌1羽当たり6.55個と9.51個）に比べ有意に高かった（p＜0.01）。ペアリングでは，産卵数20個の個体が翌年に1個に激減した例，同一ペン内で，雌が同一雄とのペアリングを解消するためペンからの移動を試み事故死した3例，また2頭の雄と交尾した1例が観察された。雌には，同一雄とペアリングを継続するタイプと産卵後に雄を交換するタイプが存在すると推察され，飼育下では前者のタイプが多く認められた。受精率は，2009～2010年と2010～2011年で，それぞれ89.64％と86.14％で，孵化率はそれぞれ67.34％と64.64％であった。受精率は産卵数の増加に伴って高くなる傾向にあった。交尾は1～3月に集中し，その割合は80.23%であった。また，交尾時間帯は午前3～9時に集中し75%を占め，特に，午前5～9時の間に52.04%であった。交尾持続時間は22～74秒間が多く72.23%であった。最長時間は3分50秒　（230秒）であった。交尾回数はペアーによってバラツキが大きく10～59回の間に分布した。産卵数が多いペアーは交尾時間も長い傾向にあった。4～5歳齢（雌・雄）の平均体重は約40kgになるが，脂肪重量は雄（9.42±0.40kg）が雌（7.34±0.64kg）に比べ有意に高かった（p＜0.01）。体重（♂）が30～35kg区の脂肪重量は5.99±0.35kgで，50～55kg区では15.33±0.85kgで有意差が認められた（p＜0.01）。体重と脂肪重量間には強い正の相関（r=0.785）が認められた。雄の脂肪重量に関して，下半期が9.94±0.47kgで，上半期（7.75±0.64kg）に比べ有意に高い値であった（p＜0.01）。","subitem_description_type":"Other"}]},"item_1_description_11":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"The emu is a ratite with marked environmental adaptability, bred in Abashiri City, Hokkaido mainly for oil (functional material) production.  However, laying, fertility, and hatchability should be improved for mass breeding. Thus, in the present study, we investigated the relationship between pairing and laying to improve egg production.  After pairing, mating was observed on day 14 at the earliest and on day 74 at the latest. The laying period was seven months between November and May of the following year.  Egg production was highest in February and March at 25.79 and 30.94%, respectively. The relationship between pairing and laying demonstrated that egg production in breeding groups of equal female-to-male ratios (18.50 eggs per female) was significantly higher than those of population breeding groups and breeding groups with unequal female-to-male ratios (6.55 and 9.51 eggs per female, respectively) (p<0.001). The female-to-male ratio was altered in pairing, markedly decreasing the egg production from 20 to 1 the following year.  For example, two females died as a result of an accident during transfer to a different pen, conducted to prevent pairing with the same male, while one female mated with two different males. Thus, some females continued to mate with the previous males, while the others mated with different males after laying.  Fertility was 89.64 and 86.14% and hatchability was 67.34 and 64.64% in 2009-2010 and 2010-2011, respectively. The mating frequency peaked from January to March, accounting for 80.23% of the total.  The mating time zone peaked from 3:00 to 9:00 a.m., accounting for 75%, but particularly from 5:00 to 9:00 a.m., accounting for 52.04%. The mating duration peaked at 22-74 seconds, accounting for 72.23%. The longest mating duration was 3 minutes and 50 seconds (230 seconds).  The mating frequency varied among pairs, ranging from 10 to 59. Pairs with high egg production tended to show a longer mating duration. The mean body weight of four- and five-year-old emus was 40kg. The body fat weight of males (9.42±0.40 kg) was significantly larger than that of female emus (7.34±0.64kg) (p<0.01). There was a strong correlation between the body and fat weights (r=0.785). The fat weight of male emus shipped in the first and second periods were 7.75±0.64 and 9.94±0.47kg, respectively ; the weight of fat in the second period was significantly larger (p<0.01).","subitem_description_type":"Other"}]},"item_1_description_13":{"attribute_name":"レポート・講演番号","attribute_value_mlt":[{"subitem_description":"E","subitem_description_type":"Other"}]},"item_1_description_15":{"attribute_name":"表示順","attribute_value_mlt":[{"subitem_description":"2","subitem_description_type":"Other"}]},"item_1_description_2":{"attribute_name":"ページ属性","attribute_value_mlt":[{"subitem_description":"P","subitem_description_type":"Other"}]},"item_1_description_8":{"attribute_name":"記事種別(日)","attribute_value_mlt":[{"subitem_description":"総説","subitem_description_type":"Other"}]},"item_1_description_9":{"attribute_name":"記事種別(英)","attribute_value_mlt":[{"subitem_description":"Review","subitem_description_type":"Other"}]},"item_1_source_id_1":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AN00164184","subitem_source_identifier_type":"NCID"}]},"item_1_text_6":{"attribute_name":"著者所属(日)","attribute_value_mlt":[{"subitem_text_value":"東京農業大学名誉教授"}]},"item_1_text_7":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Honorary Professor, Tokyo University of Agriculture"}]},"item_1_title_3":{"attribute_name":"論文名よみ","attribute_value_mlt":[{"subitem_title":"サンギョウトリ　エミュー"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"横濵, 道成"},{"creatorName":"ヨコハマ, ミチナリ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"3682","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"Yokohama, Michinari","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"3683","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":"2016-09-15"}],"displaytype":"detail","filename":"60_189.pdf","filesize":[{"value":"6.7 MB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"60_189","url":"https://nodai.repo.nii.ac.jp/record/649/files/60_189.pdf"},"version_id":"83071d3a-318c-4aea-a19f-8f5f47ec9e17"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"産業鳥・エミュー","subitem_subject_scheme":"Other"},{"subitem_subject":"ペアリング","subitem_subject_scheme":"Other"},{"subitem_subject":"産卵数","subitem_subject_scheme":"Other"},{"subitem_subject":"脂肪重量","subitem_subject_scheme":"Other"},{"subitem_subject":"受精率","subitem_subject_scheme":"Other"},{"subitem_subject":"Emu for Bioindustry","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Pairing","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Egg Production","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Body Fat Weight","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Fertility","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"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":"産業鳥・エミュー","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"産業鳥・エミュー"},{"subitem_title":"Emu for Bioindustry","subitem_title_language":"en"}]},"item_type_id":"1","owner":"3","path":["136"],"pubdate":{"attribute_name":"公開日","attribute_value":"2016-09-15"},"publish_date":"2016-09-15","publish_status":"0","recid":"649","relation_version_is_last":true,"title":["産業鳥・エミュー"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-06-19T08:01:14.283503+00:00"}