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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 15号
  1. 部局別インデックス
  2. 農学部

沖縄における乳牛の繁殖状況調査 II(畜産学科)

http://hdl.handle.net/20.500.12000/4567
http://hdl.handle.net/20.500.12000/4567
d9e80d27-085f-4e09-b28d-1f9fa99b4da9
名前 / ファイル ライセンス アクション
KJ00000161577.pdf KJ00000161577.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル 沖縄における乳牛の繁殖状況調査 II(畜産学科)
言語 ja
作成者 渡嘉敷, 綏宝

× 渡嘉敷, 綏宝

ja 渡嘉敷, 綏宝

Tokashiki, Suiho

× Tokashiki, Suiho

en Tokashiki, Suiho

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述タイプ Other
内容記述 1.本調査は那覇及び南部地区の酪農地帯において主として多頭飼育されている285頭の乳牛について1965年9月から1967年3月まで個体ごとの繁殖の推移を継続して観察したものである。2.繁殖は人工授精と自然交配の二本立で行なっており, 最近繁殖成績も向上しつつあるが, 問題があるのは自然交配においては雑駁な雄を配するため生産犢の資質の向上がはかれない点にある。今後酪農振興のために人工授精の普及と受胎率の向上策が望まれる。3. 3回の調査における病的空胎は全調査牛の10.1∿17.2%と高率を示しており, これらの障害牛の大部分は十分な治療を受けることなく, 肉用として売却される実状にある。このことは乳牛の殖えない原因ともなっているので, 診療組織の整備をはかって適切なる診断と処置を講ずる方策が望まれる。
内容記述タイプ Other
内容記述 1. This investigation was made by continuous observations of individual reproduction careers of 285 cows which were raised mostly in groups in Naha City and the Southern Region of Okinawa from September 1965 to March 1967. 2. Reproduction is made either by artificial insemination or by natural mating. Recently the reproduction rate is improving. But there is a problem that unknown poor strains of bulls are used in natural mating and the improvement of new-born calves can not be made. It is desirable to encourage artificial insemination and improve conception rate from now on. 3. In three investigations, the ratios of sterile cows to the total were 17.2,11.7 and 10.1%, respectively, which are considerably high. Most of these sterile cows are sold for meat without therapy. It is one of the reasons the number of cows is not increasing. Therefore, it is desirable to take a policy to establish an organization so that proper therapy and treatment of cows can be made.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学農学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/4567
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0370-4246
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
書誌情報
号 15, p. 199-205
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