Methionine and lysine requirements for maintenance and efficiency of utilization for growth of two sizes of tilapia (Oreochromis niloticus)
Identifieur interne : 001743 ( Istex/Corpus ); précédent : 001742; suivant : 001744Methionine and lysine requirements for maintenance and efficiency of utilization for growth of two sizes of tilapia (Oreochromis niloticus)
Auteurs : J. He ; L. Tian ; A. Lemme ; W. Gao ; H. Yang ; J. Niu ; G. Liang ; P. Chen ; Y. LiuSource :
- Aquaculture Nutrition [ 1353-5773 ] ; 2013-08.
Abstract
Different ration levels were used to determine the digestible methionine (DMet) and lysine (DLys) maintenance requirements and the utilization efficiencies for gain above maintenance for two different sizes of tilapia (20.7 and 165 g), by feeding a soybean meal–based diet. Protein gain and amino acid (AA) gain (e.g. methionine, Met; lysine, Lys; R2 = 0.98) were best‐fit linear functions of DMet and DLys intake in both fish size classes. Slopes of these regression lines showed that the DMet utilization efficiencies for growth were 0.76 and 0.55 for juvenile and adult fish, respectively. The DMet maintenance requirements were 3.12 and 16.5 mg BW(kg)−0.7 day−1 for juvenile and adult fish, respectively. The DLys utilization efficiencies for gain were 0.72 and 0.52, whereas the DLys maintenance requirements were 16.9 and 68.8 mg BW (kg)−0.7 day−1, for juvenile and adult fish, respectively. These results suggested that there was an obvious difference in the maintenance requirements and utilization efficiencies for gain above maintenance for DMet and DLys in two different sizes of tilapia. The AA maintenance needs increased as fish increased in size, being greater in adult fish than in juvenile; however, the AA utilization efficiencies for gain above maintenance decreased with the increment of fish size.
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DOI: 10.1111/anu.12012
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Niu</name><affiliation><mods:affiliation>South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China</mods:affiliation></affiliation></author><author><name sortKey="Liang, G" sort="Liang, G" uniqKey="Liang G" first="G." last="Liang">G. Liang</name><affiliation><mods:affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</mods:affiliation></affiliation></author><author><name sortKey="Chen, P" sort="Chen, P" uniqKey="Chen P" first="P." last="Chen">P. Chen</name><affiliation><mods:affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</mods:affiliation></affiliation></author><author><name sortKey="Liu, Y" sort="Liu, Y" uniqKey="Liu Y" first="Y." last="Liu">Y. Liu</name><affiliation><mods:affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: edls@mail.sysu.edu.cn</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:AAD452AA7A9EA561CB1F86B86F331773FF7FF800</idno><date when="2013" year="2013">2013</date><idno type="doi">10.1111/anu.12012</idno><idno type="url">https://api.istex.fr/document/AAD452AA7A9EA561CB1F86B86F331773FF7FF800/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001743</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001743</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Methionine and lysine requirements for maintenance and efficiency of utilization for growth of two sizes of tilapia (Oreochromis niloticus)</title><author><name sortKey="He, J" sort="He, J" uniqKey="He J" first="J." last="He">J. He</name><affiliation><mods:affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</mods:affiliation></affiliation></author><author><name sortKey="Tian, L" sort="Tian, L" uniqKey="Tian L" first="L." last="Tian">L. Tian</name><affiliation><mods:affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</mods:affiliation></affiliation></author><author><name sortKey="Lemme, A" sort="Lemme, A" uniqKey="Lemme A" first="A." last="Lemme">A. Lemme</name><affiliation><mods:affiliation>Evonik Industries AG, Hanau, Germany</mods:affiliation></affiliation></author><author><name sortKey="Gao, W" sort="Gao, W" uniqKey="Gao W" first="W." last="Gao">W. Gao</name><affiliation><mods:affiliation>Evonik Degussa (China) Co., Ltd, Chaoyang District, Beijing, China</mods:affiliation></affiliation></author><author><name sortKey="Yang, H" sort="Yang, H" uniqKey="Yang H" first="H." last="Yang">H. Yang</name><affiliation><mods:affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</mods:affiliation></affiliation></author><author><name sortKey="Niu, J" sort="Niu, J" uniqKey="Niu J" first="J." last="Niu">J. Niu</name><affiliation><mods:affiliation>South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China</mods:affiliation></affiliation></author><author><name sortKey="Liang, G" sort="Liang, G" uniqKey="Liang G" first="G." last="Liang">G. Liang</name><affiliation><mods:affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</mods:affiliation></affiliation></author><author><name sortKey="Chen, P" sort="Chen, P" uniqKey="Chen P" first="P." last="Chen">P. Chen</name><affiliation><mods:affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</mods:affiliation></affiliation></author><author><name sortKey="Liu, Y" sort="Liu, Y" uniqKey="Liu Y" first="Y." last="Liu">Y. Liu</name><affiliation><mods:affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: edls@mail.sysu.edu.cn</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Aquaculture Nutrition</title><title level="j" type="abbrev">Aquacult Nutr</title><idno type="ISSN">1353-5773</idno><idno type="eISSN">1365-2095</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2013-08">2013-08</date><biblScope unit="volume">19</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="629">629</biblScope><biblScope unit="page" to="640">640</biblScope></imprint><idno type="ISSN">1353-5773</idno></series><idno type="istex">AAD452AA7A9EA561CB1F86B86F331773FF7FF800</idno><idno type="DOI">10.1111/anu.12012</idno><idno type="ArticleID">ANU12012</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1353-5773</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Different ration levels were used to determine the digestible methionine (DMet) and lysine (DLys) maintenance requirements and the utilization efficiencies for gain above maintenance for two different sizes of tilapia (20.7 and 165 g), by feeding a soybean meal–based diet. Protein gain and amino acid (AA) gain (e.g. methionine, Met; lysine, Lys; R2 = 0.98) were best‐fit linear functions of DMet and DLys intake in both fish size classes. Slopes of these regression lines showed that the DMet utilization efficiencies for growth were 0.76 and 0.55 for juvenile and adult fish, respectively. The DMet maintenance requirements were 3.12 and 16.5 mg BW(kg)−0.7 day−1 for juvenile and adult fish, respectively. The DLys utilization efficiencies for gain were 0.72 and 0.52, whereas the DLys maintenance requirements were 16.9 and 68.8 mg BW (kg)−0.7 day−1, for juvenile and adult fish, respectively. These results suggested that there was an obvious difference in the maintenance requirements and utilization efficiencies for gain above maintenance for DMet and DLys in two different sizes of tilapia. The AA maintenance needs increased as fish increased in size, being greater in adult fish than in juvenile; however, the AA utilization efficiencies for gain above maintenance decreased with the increment of fish size.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>J.‐Y. He</name><affiliations><json:string>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</json:string></affiliations></json:item><json:item><name>L.‐X. Tian</name><affiliations><json:string>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</json:string></affiliations></json:item><json:item><name>A. Lemme</name><affiliations><json:string>Evonik Industries AG, Hanau, Germany</json:string></affiliations></json:item><json:item><name>W. Gao</name><affiliations><json:string>Evonik Degussa (China) Co., Ltd, Chaoyang District, Beijing, China</json:string></affiliations></json:item><json:item><name>H.‐J. Yang</name><affiliations><json:string>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</json:string></affiliations></json:item><json:item><name>J. Niu</name><affiliations><json:string>South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China</json:string></affiliations></json:item><json:item><name>G.‐Y. Liang</name><affiliations><json:string>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</json:string></affiliations></json:item><json:item><name>P.‐F. Chen</name><affiliations><json:string>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</json:string></affiliations></json:item><json:item><name>Y.‐J. Liu</name><affiliations><json:string>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</json:string><json:string>E-mail: edls@mail.sysu.edu.cn</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>fish size</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>lysine utilization efficiency</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>maintenance requirement</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>methionine utilization efficiency</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Oreochromis niloticus</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>ration levels</value></json:item></subject><articleId><json:string>ANU12012</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Different ration levels were used to determine the digestible methionine (DMet) and lysine (DLys) maintenance requirements and the utilization efficiencies for gain above maintenance for two different sizes of tilapia (20.7 and 165 g), by feeding a soybean meal–based diet. Protein gain and amino acid (AA) gain (e.g. methionine, Met; lysine, Lys; R2 = 0.98) were best‐fit linear functions of DMet and DLys intake in both fish size classes. Slopes of these regression lines showed that the DMet utilization efficiencies for growth were 0.76 and 0.55 for juvenile and adult fish, respectively. The DMet maintenance requirements were 3.12 and 16.5 mg BW(kg)−0.7 day−1 for juvenile and adult fish, respectively. The DLys utilization efficiencies for gain were 0.72 and 0.52, whereas the DLys maintenance requirements were 16.9 and 68.8 mg BW (kg)−0.7 day−1, for juvenile and adult fish, respectively. These results suggested that there was an obvious difference in the maintenance requirements and utilization efficiencies for gain above maintenance for DMet and DLys in two different sizes of tilapia. 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Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation></author><author xml:id="author-3"><persName><forename type="first">A.</forename><surname>Lemme</surname></persName><affiliation>Evonik Industries AG, Hanau, Germany</affiliation></author><author xml:id="author-4"><persName><forename type="first">W.</forename><surname>Gao</surname></persName><affiliation>Evonik Degussa (China) Co., Ltd, Chaoyang District, Beijing, China</affiliation></author><author xml:id="author-5"><persName><forename type="first">H.‐J.</forename><surname>Yang</surname></persName><affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation></author><author xml:id="author-6"><persName><forename type="first">J.</forename><surname>Niu</surname></persName><affiliation>South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China</affiliation></author><author xml:id="author-7"><persName><forename type="first">G.‐Y.</forename><surname>Liang</surname></persName><affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation></author><author xml:id="author-8"><persName><forename type="first">P.‐F.</forename><surname>Chen</surname></persName><affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation></author><author xml:id="author-9"><persName><forename type="first">Y.‐J.</forename><surname>Liu</surname></persName><email>edls@mail.sysu.edu.cn</email><affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation></author></analytic><monogr><title level="j">Aquaculture Nutrition</title><title level="j" type="abbrev">Aquacult 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diet. Protein gain and amino acid (AA) gain (e.g. methionine, Met; lysine, Lys; R2 = 0.98) were best‐fit linear functions of DMet and DLys intake in both fish size classes. Slopes of these regression lines showed that the DMet utilization efficiencies for growth were 0.76 and 0.55 for juvenile and adult fish, respectively. The DMet maintenance requirements were 3.12 and 16.5 mg BW(kg)−0.7 day−1 for juvenile and adult fish, respectively. The DLys utilization efficiencies for gain were 0.72 and 0.52, whereas the DLys maintenance requirements were 16.9 and 68.8 mg BW (kg)−0.7 day−1, for juvenile and adult fish, respectively. These results suggested that there was an obvious difference in the maintenance requirements and utilization efficiencies for gain above maintenance for DMet and DLys in two different sizes of tilapia. The AA maintenance needs increased as fish increased in size, being greater in adult fish than in juvenile; however, the AA utilization efficiencies for gain above maintenance decreased with the increment of fish size.</p></abstract><textClass><keywords scheme="keyword"><list><head>keywords</head><item><term>fish size</term></item><item><term>lysine utilization efficiency</term></item><item><term>maintenance requirement</term></item><item><term>methionine utilization efficiency</term></item><item><term>Oreochromis niloticus</term></item><item><term>ration levels</term></item></list></keywords></textClass><textClass><keywords scheme="Journal Subject"><list><head>article-category</head><item><term>Original Article</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2012-05-22">Received</change><change when="2012-10-10">Registration</change><change when="2012-11-01">Created</change><change when="2013-08">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/AAD452AA7A9EA561CB1F86B86F331773FF7FF800/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component type="serialArticle" version="2.0" xml:id="anu12012" xml:lang="en"><header><publicationMeta level="product"><doi origin="wiley" registered="yes">10.1111/(ISSN)1365-2095</doi><issn type="print">1353-5773</issn><issn type="electronic">1365-2095</issn><idGroup><id type="product" value="ANU"></id></idGroup><titleGroup><title sort="AQUACULTURE NUTRITION" type="main">Aquaculture Nutrition</title><title type="short">Aquacult Nutr</title></titleGroup></publicationMeta><publicationMeta level="part" position="40"><doi origin="wiley">10.1111/anu.2013.19.issue-4</doi><copyright ownership="publisher">Copyright © 2013 John Wiley & Sons Ltd</copyright><numberingGroup><numbering type="journalVolume" number="19">19</numbering><numbering type="journalIssue">4</numbering></numberingGroup><coverDate startDate="2013-08">August 2013</coverDate></publicationMeta><publicationMeta level="unit" position="190" status="forIssue" type="article"><doi>10.1111/anu.12012</doi><idGroup><id type="unit" value="ANU12012"></id></idGroup><countGroup><count number="12" type="pageTotal"></count></countGroup><titleGroup><title type="articleCategory">Original Article</title><title type="tocHeading1">Original articles</title></titleGroup><copyright ownership="publisher">© 2013 John Wiley & Sons Ltd</copyright><eventGroup><event date="2012-05-22" type="manuscriptReceived"></event><event date="2012-10-10" type="manuscriptAccepted"></event><event agent="SPS" date="2012-11-01" type="xmlCreated"></event><event type="publishedOnlineEarlyUnpaginated" date="2013-01-17"></event><event type="firstOnline" date="2013-01-17"></event><event type="publishedOnlineFinalForm" date="2013-07-08"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-04"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.6.4 mode:FullText" date="2015-10-03"></event></eventGroup><numberingGroup><numbering type="pageFirst">629</numbering><numbering type="pageLast">640</numbering></numberingGroup><correspondenceTo><i>Correspondence: Y.‐J. Liu, Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou 510275, China. E‐mail</i>: <email>edls@mail.sysu.edu.cn</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:ANU.ANU12012.pdf"></link></linkGroup></publicationMeta><contentMeta><titleGroup><title type="main">Methionine and lysine requirements for maintenance and efficiency of utilization for growth of two sizes of tilapia (<i><fc>O</fc>reochromis niloticus</i>)</title><title type="shortAuthors">J.‐Y. He <i>et al</i>.</title></titleGroup><creators><creator affiliationRef="#anu12012-aff-0001" creatorRole="author" xml:id="anu12012-cr-0001"><personName><givenNames>J.‐Y.</givenNames> <familyName>He</familyName></personName></creator><creator affiliationRef="#anu12012-aff-0001" creatorRole="author" xml:id="anu12012-cr-0002"><personName><givenNames>L.‐X.</givenNames> <familyName>Tian</familyName></personName></creator><creator affiliationRef="#anu12012-aff-0002" creatorRole="author" xml:id="anu12012-cr-0003"><personName><givenNames>A.</givenNames> <familyName>Lemme</familyName></personName></creator><creator affiliationRef="#anu12012-aff-0003" creatorRole="author" xml:id="anu12012-cr-0004"><personName><givenNames>W.</givenNames> <familyName>Gao</familyName></personName></creator><creator affiliationRef="#anu12012-aff-0001" creatorRole="author" xml:id="anu12012-cr-0005"><personName><givenNames>H.‐J.</givenNames> <familyName>Yang</familyName></personName></creator><creator affiliationRef="#anu12012-aff-0004" creatorRole="author" xml:id="anu12012-cr-0006"><personName><givenNames>J.</givenNames> <familyName>Niu</familyName></personName></creator><creator affiliationRef="#anu12012-aff-0001" creatorRole="author" xml:id="anu12012-cr-0007"><personName><givenNames>G.‐Y.</givenNames> <familyName>Liang</familyName></personName></creator><creator affiliationRef="#anu12012-aff-0001" creatorRole="author" xml:id="anu12012-cr-0008"><personName><givenNames>P.‐F.</givenNames> <familyName>Chen</familyName></personName></creator><creator affiliationRef="#anu12012-aff-0001" corresponding="yes" creatorRole="author" xml:id="anu12012-cr-0009"><personName><givenNames>Y.‐J.</givenNames> <familyName>Liu</familyName></personName></creator></creators><affiliationGroup><affiliation countryCode="CN" type="organization" xml:id="anu12012-aff-0001"><orgDiv>Nutrition Laboratory</orgDiv> <orgDiv>Institute of Aquatic Economical Animals</orgDiv> <orgDiv>School of Life Science</orgDiv> <orgName>Sun Yat‐sen University</orgName> <address><city>Guangzhou</city> <country>China</country></address></affiliation><affiliation countryCode="DE" type="organization" xml:id="anu12012-aff-0002"><orgName>Evonik Industries AG</orgName> <address><city>Hanau</city> <country>Germany</country></address></affiliation><affiliation countryCode="CN" type="organization" xml:id="anu12012-aff-0003"><orgName>Evonik Degussa (China) Co., Ltd</orgName> <address><city>Beijing</city> <countryPart>Chaoyang District</countryPart> <country>China</country></address></affiliation><affiliation countryCode="CN" type="organization" xml:id="anu12012-aff-0004"><orgDiv>South China Sea Fisheries Research Institute</orgDiv> <orgName>Chinese Academy of Fishery Sciences</orgName> <address><city>Guangzhou</city> <country>China</country></address></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="anu12012-kwd-0001">fish size</keyword><keyword xml:id="anu12012-kwd-0002">lysine utilization efficiency</keyword><keyword xml:id="anu12012-kwd-0003">maintenance requirement</keyword><keyword xml:id="anu12012-kwd-0004">methionine utilization efficiency</keyword><keyword xml:id="anu12012-kwd-0005"><i><fc>O</fc>reochromis niloticus</i></keyword><keyword xml:id="anu12012-kwd-0006">ration levels</keyword></keywordGroup><fundingInfo><fundingAgency>Evonik Degussa (China) Co., Ltd.</fundingAgency></fundingInfo><abstractGroup><abstract type="main" xml:id="anu12012-abs-0001"><title type="main">Abstract</title><p>Different ration levels were used to determine the digestible methionine (<fc>DM</fc>et) and lysine (<fc>DL</fc>ys) maintenance requirements and the utilization efficiencies for gain above maintenance for two different sizes of tilapia (20.7 and 165 g), by feeding a soybean meal–based diet. Protein gain and amino acid (<fc>AA</fc>) gain (e.g. methionine, Met; lysine, Lys; <i>R</i><sup>2</sup> = 0.98) were best‐fit linear functions of <fc>DM</fc>et and <fc>DL</fc>ys intake in both fish size classes. Slopes of these regression lines showed that the <fc>DM</fc>et utilization efficiencies for growth were 0.76 and 0.55 for juvenile and adult fish, respectively. The <fc>DM</fc>et maintenance requirements were 3.12 and 16.5 mg <fc>BW</fc>(kg)<sup>−0.7</sup> day<sup>−1</sup> for juvenile and adult fish, respectively. The <fc>DL</fc>ys utilization efficiencies for gain were 0.72 and 0.52, whereas the <fc>DL</fc>ys maintenance requirements were 16.9 and 68.8 mg <fc>BW</fc> (kg)<sup>−0.7</sup> day<sup>−1</sup>, for juvenile and adult fish, respectively. These results suggested that there was an obvious difference in the maintenance requirements and utilization efficiencies for gain above maintenance for <fc>DM</fc>et and <fc>DL</fc>ys in two different sizes of tilapia. The <fc>AA</fc> maintenance needs increased as fish increased in size, being greater in adult fish than in juvenile; however, the <fc>AA</fc> utilization efficiencies for gain above maintenance decreased with the increment of fish size.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Methionine and lysine requirements for maintenance and efficiency of utilization for growth of two sizes of tilapia (Oreochromis niloticus)</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Methionine and lysine requirements for maintenance and efficiency of utilization for growth of two sizes of tilapia (Oreochromis niloticus)</title></titleInfo><name type="personal"><namePart type="given">J.‐Y.</namePart><namePart type="family">He</namePart><affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">L.‐X.</namePart><namePart type="family">Tian</namePart><affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.</namePart><namePart type="family">Lemme</namePart><affiliation>Evonik Industries AG, Hanau, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">W.</namePart><namePart type="family">Gao</namePart><affiliation>Evonik Degussa (China) Co., Ltd, Chaoyang District, Beijing, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H.‐J.</namePart><namePart type="family">Yang</namePart><affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Niu</namePart><affiliation>South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.‐Y.</namePart><namePart type="family">Liang</namePart><affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P.‐F.</namePart><namePart type="family">Chen</namePart><affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Y.‐J.</namePart><namePart type="family">Liu</namePart><affiliation>Nutrition Laboratory, Institute of Aquatic Economical Animals, School of Life Science, Sun Yat‐sen University, Guangzhou, China</affiliation><affiliation>E-mail: edls@mail.sysu.edu.cn</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2013-08</dateIssued><dateCreated encoding="w3cdtf">2012-11-01</dateCreated><dateCaptured encoding="w3cdtf">2012-05-22</dateCaptured><dateValid encoding="w3cdtf">2012-10-10</dateValid><copyrightDate encoding="w3cdtf">2013</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract>Different ration levels were used to determine the digestible methionine (DMet) and lysine (DLys) maintenance requirements and the utilization efficiencies for gain above maintenance for two different sizes of tilapia (20.7 and 165 g), by feeding a soybean meal–based diet. Protein gain and amino acid (AA) gain (e.g. methionine, Met; lysine, Lys; R2 = 0.98) were best‐fit linear functions of DMet and DLys intake in both fish size classes. Slopes of these regression lines showed that the DMet utilization efficiencies for growth were 0.76 and 0.55 for juvenile and adult fish, respectively. The DMet maintenance requirements were 3.12 and 16.5 mg BW(kg)−0.7 day−1 for juvenile and adult fish, respectively. The DLys utilization efficiencies for gain were 0.72 and 0.52, whereas the DLys maintenance requirements were 16.9 and 68.8 mg BW (kg)−0.7 day−1, for juvenile and adult fish, respectively. These results suggested that there was an obvious difference in the maintenance requirements and utilization efficiencies for gain above maintenance for DMet and DLys in two different sizes of tilapia. The AA maintenance needs increased as fish increased in size, being greater in adult fish than in juvenile; however, the AA utilization efficiencies for gain above maintenance decreased with the increment of fish size.</abstract><note type="funding">Evonik Degussa (China) Co., Ltd.</note><subject><genre>keywords</genre><topic>fish size</topic><topic>lysine utilization efficiency</topic><topic>maintenance requirement</topic><topic>methionine utilization efficiency</topic><topic>Oreochromis niloticus</topic><topic>ration levels</topic></subject><relatedItem type="host"><titleInfo><title>Aquaculture Nutrition</title></titleInfo><titleInfo type="abbreviated"><title>Aquacult Nutr</title></titleInfo><genre type="journal">journal</genre><subject><genre>article-category</genre><topic>Original Article</topic></subject><identifier type="ISSN">1353-5773</identifier><identifier type="eISSN">1365-2095</identifier><identifier type="DOI">10.1111/(ISSN)1365-2095</identifier><identifier type="PublisherID">ANU</identifier><part><date>2013</date><detail type="volume"><caption>vol.</caption><number>19</number></detail><detail type="issue"><caption>no.</caption><number>4</number></detail><extent unit="pages"><start>629</start><end>640</end><total>12</total></extent></part></relatedItem><identifier type="istex">AAD452AA7A9EA561CB1F86B86F331773FF7FF800</identifier><identifier type="DOI">10.1111/anu.12012</identifier><identifier type="ArticleID">ANU12012</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright © 2013 John Wiley & Sons Ltd© 2013 John Wiley & Sons Ltd</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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