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        <identifier>oai:repository.naro.go.jp:00002091</identifier>
        <datestamp>2023-05-15T23:07:25Z</datestamp>
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          <dc:title>ヒツジ頭部における酸素消費量の連続測定ならびにエネルギー消費量の推定</dc:title>
          <dc:title xml:lang="en">Continuous Monitoring of Oxygen Consumption in Sheep Head and Estimation of Energy Expenditure from Oxygen Consumption</dc:title>
          <jpcoar:creator>
            <jpcoar:creatorName>樋口, 浩二</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">ヒグチ, コウジ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">HIGUCHI, Koji</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName>西田, 武弘</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">ニシダ, タケヒロ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">NISHIDA, Takehiro</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName>永西, 修</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">エニシ, オサム</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">ENISHI, Osamu</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName>プルノモアディ, アグン</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">プルノモアディ, アグン</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">PURNOMOADI, Agung</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName>上田, 宏一郎</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">ウエダ, コウイチロウ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">UEDA, Koichiro</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName>寺田 , 文典</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">テラダ, フミノリ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">TERADA, Fuminori</jpcoar:creatorName>
          </jpcoar:creator>
          <jpcoar:subject subjectScheme="Other">酸素消費量</jpcoar:subject>
          <jpcoar:subject subjectScheme="Other">血流量</jpcoar:subject>
          <jpcoar:subject subjectScheme="Other">咀嚼行動</jpcoar:subject>
          <jpcoar:subject subjectScheme="Other">頭部</jpcoar:subject>
          <jpcoar:subject subjectScheme="Other">ヒツジ</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">Oxygen consumption</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">Blood flow rate</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">Chewing activity</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">Head</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">Sheep</jpcoar:subject>
          <datacite:description descriptionType="Abstract">An experiment was conducted with two non-lactating and non-pregnant ewes to evaluate a new method of determining the energy expenditure of the head. The sheep were previously prepared with skin-covered loops and with ultrasonic blood flow probes around the carotid artery, and they were fed Italian ryegrass hay. After inserting the blood gas sensors into the carotid artery and jugular vein, the blood oxygen concentration, blood flow rate, and activity of the animals were continuously monitored. Oxygen consumption of the head was determined by multiplying the carotid blood flow rate and the difference in oxygen concentration between arterial and venous blood. The oxygen concentration of the carotid artery and jugular vein were relatively constant throughout a 3-day period; however, a rapid rise in the blood flow rate was observed. The rise in the blood flow rate was synchronized with the chewing activity of the sheep. Thus, the changes in the oxygen consumption of the head were associated with chewing. The calculated energy expenditure of the head was greater during eating and rumination than during resting. The rise in energy expenditure was greater during eating than that during rumination.</datacite:description>
          <datacite:description descriptionType="Abstract">動静脈差法による家畜臓器のエネルギー消費測定系を開発する目的で，2頭のヒツジの頚動脈と頚静脈の酸素濃度差ならびに頚動脈血流量を連続的に測定した。ヒツジにはあらかじめ左側に頚動脈ループの作成，右側頚動脈に超音波血流計センサーの装着をおこない，日本飼養標準に基づいてイタリアンライグラス乾草をTDN維持要求量を満たすよ うに給餌し，7日間の予備試験の後， 6日間の本試験をおこなった。本試験前半3日間は，頚動脈ループと頚静脈に血液ガスセンサーを挿入して酸素濃度を10秒間隔で測定し，血流量は1分間の平均値を記録した。同時にビデオカメラでヒツジの採食・反すう行動を観察した。後半3日間は開放式呼吸試験装置で全身の酸素消費量を測定した。その結果，頚動脈ならびに頚静脈酸素濃度は，1日を通じでほぼ一定の値を示した。 血中酸素濃度には動物の行動の影響は見られず，見かけの酸素濃度差に変化はなかった。しかし頚動脈血流量は採食・反すう行動に伴って大きく変動し，採食時では安静時に比べて約2. 5倍に増加した。単位時間あたりの頭部のエネルギー消費量は、安静時に比べて採食・反すう時に増加し，その増加は反すう時よりも採食時のほうが大きかった。</datacite:description>
          <dc:publisher>独立行政法人 農業技術研究機構</dc:publisher>
          <datacite:date dateType="Issued">2003-12-19</datacite:date>
          <dc:language>eng</dc:language>
          <dc:type rdf:resource="http://purl.org/coar/resource_type/c_6501">departmental bulletin paper</dc:type>
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          <jpcoar:identifier identifierType="DOI">https://doi.org/10.24514/00002003</jpcoar:identifier>
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          <jpcoar:sourceIdentifier identifierType="ISSN">1347-0825</jpcoar:sourceIdentifier>
          <jpcoar:sourceTitle>畜産草地研究所研究報告</jpcoar:sourceTitle>
          <jpcoar:sourceTitle xml:lang="en">Bulletin of National Institute of Livestock and Grassland Science</jpcoar:sourceTitle>
          <jpcoar:volume>4</jpcoar:volume>
          <jpcoar:pageStart>7</jpcoar:pageStart>
          <jpcoar:pageEnd>14</jpcoar:pageEnd>
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            <datacite:date dateType="Available">2019-03-20</datacite:date>
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