Energy requirements of the red kangaroo (Macropus rufus): impacts of age, growth and body size in a large desert-dwelling herbivore.
Identifieur interne : 002443 ( PubMed/Corpus ); précédent : 002442; suivant : 002444Energy requirements of the red kangaroo (Macropus rufus): impacts of age, growth and body size in a large desert-dwelling herbivore.
Auteurs : A J Munn ; T J DawsonSource :
- Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology [ 0174-1578 ] ; 2003.
English descriptors
- KwdEn :
- MESH :
- chemistry : Feces.
- growth & development : Macropodidae.
- physiology : Basal Metabolism, Body Weight, Energy Intake, Energy Metabolism, Macropodidae.
- Age Factors, Analysis of Variance, Animals, Diet, Female, Male, Weaning.
Abstract
Generally, young growing mammals have resting metabolic rates (RMRs) that are proportionally greater than those of adult animals. This is seen in the red kangaroo ( Macropus rufus), a large (>20 kg) herbivorous marsupial common to arid and semi-arid inland Australia. Juvenile red kangaroos have RMRs 1.5-1.6 times those expected for adult marsupials of an equivalent body mass. When fed high-quality chopped lucerne hay, young-at-foot (YAF) kangaroos, which have permanently left the mother's pouch but are still sucking, and recently weaned red kangaroos had digestible energy intakes of 641+/-27 kJ kg(-0.75) day(-1) and 677+/-26 kJ kg(-0.75) day(-1), respectively, significantly higher than the 385+/-37 kJ kg(-0.75) day(-1) ingested by mature, non-lactating females. However, YAF and weaned red kangaroos had maintenance energy requirements (MERs) that were not significantly higher than those of mature, non-lactating females, the values ranging between 384 kJ kg(-0.75) day(-1) and 390 kJ kg(-0.75) day(-1) digestible energy. Importantly, the MER of mature female red kangaroos was 84% of that previously reported for similarly sized, but still growing, male red kangaroos. Growth was the main factor affecting the proportionally higher energy requirements of the juvenile red kangaroos relative to non-reproductive mature females. On a good quality diet, juvenile red kangaroos from permanent pouch exit until shortly after weaning (ca. 220-400 days) had average growth rates of 55 g body mass day(-1). At this level of growth, juveniles had total daily digestible energy requirements (i.e. MER plus growth energy requirements) that were 1.7-1.8 times the MER of mature, non-reproductive females. Our data suggest that the proportionally higher RMR of juvenile red kangaroos is largely explained by the additional energy needed for growth. Energy contents of the tissue gained by the YAF and weaned red kangaroos during growth were estimated to be 5.3 kJ g(-1), within the range found for most young growing mammals.
DOI: 10.1007/s00360-003-0367-3
PubMed: 12879349
Links to Exploration step
pubmed:12879349Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Energy requirements of the red kangaroo (Macropus rufus): impacts of age, growth and body size in a large desert-dwelling herbivore.</title>
<author><name sortKey="Munn, A J" sort="Munn, A J" uniqKey="Munn A" first="A J" last="Munn">A J Munn</name>
<affiliation><nlm:affiliation>School of Biological Earth and Environmental Sciences, University of New South Wales, 2052, Sydney, NSW, Australia. a.munn@unsw.edu.au</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Dawson, T J" sort="Dawson, T J" uniqKey="Dawson T" first="T J" last="Dawson">T J Dawson</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PubMed</idno>
<date when="2003">2003</date>
<idno type="RBID">pubmed:12879349</idno>
<idno type="pmid">12879349</idno>
<idno type="doi">10.1007/s00360-003-0367-3</idno>
<idno type="wicri:Area/PubMed/Corpus">002443</idno>
<idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">002443</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en">Energy requirements of the red kangaroo (Macropus rufus): impacts of age, growth and body size in a large desert-dwelling herbivore.</title>
<author><name sortKey="Munn, A J" sort="Munn, A J" uniqKey="Munn A" first="A J" last="Munn">A J Munn</name>
<affiliation><nlm:affiliation>School of Biological Earth and Environmental Sciences, University of New South Wales, 2052, Sydney, NSW, Australia. a.munn@unsw.edu.au</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Dawson, T J" sort="Dawson, T J" uniqKey="Dawson T" first="T J" last="Dawson">T J Dawson</name>
</author>
</analytic>
<series><title level="j">Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology</title>
<idno type="ISSN">0174-1578</idno>
<imprint><date when="2003" type="published">2003</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Age Factors</term>
<term>Analysis of Variance</term>
<term>Animals</term>
<term>Basal Metabolism (physiology)</term>
<term>Body Weight (physiology)</term>
<term>Diet</term>
<term>Energy Intake (physiology)</term>
<term>Energy Metabolism (physiology)</term>
<term>Feces (chemistry)</term>
<term>Female</term>
<term>Macropodidae (growth & development)</term>
<term>Macropodidae (physiology)</term>
<term>Male</term>
<term>Weaning</term>
</keywords>
<keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Feces</term>
</keywords>
<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Macropodidae</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Basal Metabolism</term>
<term>Body Weight</term>
<term>Energy Intake</term>
<term>Energy Metabolism</term>
<term>Macropodidae</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Age Factors</term>
<term>Analysis of Variance</term>
<term>Animals</term>
<term>Diet</term>
<term>Female</term>
<term>Male</term>
<term>Weaning</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Generally, young growing mammals have resting metabolic rates (RMRs) that are proportionally greater than those of adult animals. This is seen in the red kangaroo ( Macropus rufus), a large (>20 kg) herbivorous marsupial common to arid and semi-arid inland Australia. Juvenile red kangaroos have RMRs 1.5-1.6 times those expected for adult marsupials of an equivalent body mass. When fed high-quality chopped lucerne hay, young-at-foot (YAF) kangaroos, which have permanently left the mother's pouch but are still sucking, and recently weaned red kangaroos had digestible energy intakes of 641+/-27 kJ kg(-0.75) day(-1) and 677+/-26 kJ kg(-0.75) day(-1), respectively, significantly higher than the 385+/-37 kJ kg(-0.75) day(-1) ingested by mature, non-lactating females. However, YAF and weaned red kangaroos had maintenance energy requirements (MERs) that were not significantly higher than those of mature, non-lactating females, the values ranging between 384 kJ kg(-0.75) day(-1) and 390 kJ kg(-0.75) day(-1) digestible energy. Importantly, the MER of mature female red kangaroos was 84% of that previously reported for similarly sized, but still growing, male red kangaroos. Growth was the main factor affecting the proportionally higher energy requirements of the juvenile red kangaroos relative to non-reproductive mature females. On a good quality diet, juvenile red kangaroos from permanent pouch exit until shortly after weaning (ca. 220-400 days) had average growth rates of 55 g body mass day(-1). At this level of growth, juveniles had total daily digestible energy requirements (i.e. MER plus growth energy requirements) that were 1.7-1.8 times the MER of mature, non-reproductive females. Our data suggest that the proportionally higher RMR of juvenile red kangaroos is largely explained by the additional energy needed for growth. Energy contents of the tissue gained by the YAF and weaned red kangaroos during growth were estimated to be 5.3 kJ g(-1), within the range found for most young growing mammals.</div>
</front>
</TEI>
<pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">12879349</PMID>
<DateCompleted><Year>2004</Year>
<Month>05</Month>
<Day>24</Day>
</DateCompleted>
<DateRevised><Year>2018</Year>
<Month>11</Month>
<Day>13</Day>
</DateRevised>
<Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0174-1578</ISSN>
<JournalIssue CitedMedium="Print"><Volume>173</Volume>
<Issue>7</Issue>
<PubDate><Year>2003</Year>
<Month>Sep</Month>
</PubDate>
</JournalIssue>
<Title>Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology</Title>
<ISOAbbreviation>J. Comp. Physiol. B, Biochem. Syst. Environ. Physiol.</ISOAbbreviation>
</Journal>
<ArticleTitle>Energy requirements of the red kangaroo (Macropus rufus): impacts of age, growth and body size in a large desert-dwelling herbivore.</ArticleTitle>
<Pagination><MedlinePgn>575-82</MedlinePgn>
</Pagination>
<Abstract><AbstractText>Generally, young growing mammals have resting metabolic rates (RMRs) that are proportionally greater than those of adult animals. This is seen in the red kangaroo ( Macropus rufus), a large (>20 kg) herbivorous marsupial common to arid and semi-arid inland Australia. Juvenile red kangaroos have RMRs 1.5-1.6 times those expected for adult marsupials of an equivalent body mass. When fed high-quality chopped lucerne hay, young-at-foot (YAF) kangaroos, which have permanently left the mother's pouch but are still sucking, and recently weaned red kangaroos had digestible energy intakes of 641+/-27 kJ kg(-0.75) day(-1) and 677+/-26 kJ kg(-0.75) day(-1), respectively, significantly higher than the 385+/-37 kJ kg(-0.75) day(-1) ingested by mature, non-lactating females. However, YAF and weaned red kangaroos had maintenance energy requirements (MERs) that were not significantly higher than those of mature, non-lactating females, the values ranging between 384 kJ kg(-0.75) day(-1) and 390 kJ kg(-0.75) day(-1) digestible energy. Importantly, the MER of mature female red kangaroos was 84% of that previously reported for similarly sized, but still growing, male red kangaroos. Growth was the main factor affecting the proportionally higher energy requirements of the juvenile red kangaroos relative to non-reproductive mature females. On a good quality diet, juvenile red kangaroos from permanent pouch exit until shortly after weaning (ca. 220-400 days) had average growth rates of 55 g body mass day(-1). At this level of growth, juveniles had total daily digestible energy requirements (i.e. MER plus growth energy requirements) that were 1.7-1.8 times the MER of mature, non-reproductive females. Our data suggest that the proportionally higher RMR of juvenile red kangaroos is largely explained by the additional energy needed for growth. Energy contents of the tissue gained by the YAF and weaned red kangaroos during growth were estimated to be 5.3 kJ g(-1), within the range found for most young growing mammals.</AbstractText>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Munn</LastName>
<ForeName>A J</ForeName>
<Initials>AJ</Initials>
<AffiliationInfo><Affiliation>School of Biological Earth and Environmental Sciences, University of New South Wales, 2052, Sydney, NSW, Australia. a.munn@unsw.edu.au</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Dawson</LastName>
<ForeName>T J</ForeName>
<Initials>TJ</Initials>
</Author>
</AuthorList>
<Language>eng</Language>
<PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType>
<PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType>
</PublicationTypeList>
<ArticleDate DateType="Electronic"><Year>2003</Year>
<Month>07</Month>
<Day>22</Day>
</ArticleDate>
</Article>
<MedlineJournalInfo><Country>Germany</Country>
<MedlineTA>J Comp Physiol B</MedlineTA>
<NlmUniqueID>8413200</NlmUniqueID>
<ISSNLinking>0174-1578</ISSNLinking>
</MedlineJournalInfo>
<CitationSubset>IM</CitationSubset>
<MeshHeadingList><MeshHeading><DescriptorName UI="D000367" MajorTopicYN="N">Age Factors</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D000704" MajorTopicYN="N">Analysis of Variance</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D000818" MajorTopicYN="N">Animals</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D001481" MajorTopicYN="N">Basal Metabolism</DescriptorName>
<QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D001835" MajorTopicYN="N">Body Weight</DescriptorName>
<QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D004032" MajorTopicYN="N">Diet</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D002149" MajorTopicYN="N">Energy Intake</DescriptorName>
<QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D004734" MajorTopicYN="N">Energy Metabolism</DescriptorName>
<QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D005243" MajorTopicYN="N">Feces</DescriptorName>
<QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D005260" MajorTopicYN="N">Female</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D007614" MajorTopicYN="N">Macropodidae</DescriptorName>
<QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName>
<QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D008297" MajorTopicYN="N">Male</DescriptorName>
</MeshHeading>
<MeshHeading><DescriptorName UI="D014886" MajorTopicYN="N">Weaning</DescriptorName>
</MeshHeading>
</MeshHeadingList>
</MedlineCitation>
<PubmedData><History><PubMedPubDate PubStatus="accepted"><Year>2003</Year>
<Month>05</Month>
<Day>30</Day>
</PubMedPubDate>
<PubMedPubDate PubStatus="pubmed"><Year>2003</Year>
<Month>7</Month>
<Day>25</Day>
<Hour>5</Hour>
<Minute>0</Minute>
</PubMedPubDate>
<PubMedPubDate PubStatus="medline"><Year>2004</Year>
<Month>5</Month>
<Day>25</Day>
<Hour>5</Hour>
<Minute>0</Minute>
</PubMedPubDate>
<PubMedPubDate PubStatus="entrez"><Year>2003</Year>
<Month>7</Month>
<Day>25</Day>
<Hour>5</Hour>
<Minute>0</Minute>
</PubMedPubDate>
</History>
<PublicationStatus>ppublish</PublicationStatus>
<ArticleIdList><ArticleId IdType="pubmed">12879349</ArticleId>
<ArticleId IdType="doi">10.1007/s00360-003-0367-3</ArticleId>
</ArticleIdList>
<ReferenceList><Reference><Citation>J Exp Biol. 1993 Sep;182:41-56</Citation>
<ArticleIdList><ArticleId IdType="pubmed">8228784</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Comp Biochem Physiol A Comp Physiol. 1985;81(4):741-54</Citation>
<ArticleIdList><ArticleId IdType="pubmed">2863065</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Am Nat. 2000 Aug;156(2):201-219</Citation>
<ArticleIdList><ArticleId IdType="pubmed">10856202</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Physiol Biochem Zool. 2001 Nov-Dec;74(6):917-27</Citation>
<ArticleIdList><ArticleId IdType="pubmed">11731983</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>J Comp Physiol B. 2003 Mar;173(2):141-8</Citation>
<ArticleIdList><ArticleId IdType="pubmed">12624652</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>J Theor Biol. 2001 Mar 7;209(1):9-27</Citation>
<ArticleIdList><ArticleId IdType="pubmed">11237567</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Proc Nutr Soc. 1982 Jun;41(2):155-9</Citation>
<ArticleIdList><ArticleId IdType="pubmed">7051012</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Science. 1997 Apr 4;276(5309):122-6</Citation>
<ArticleIdList><ArticleId IdType="pubmed">9082983</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Am J Physiol. 1970 Apr;218(4):1233-8</Citation>
<ArticleIdList><ArticleId IdType="pubmed">5435424</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>J Exp Biol. 1991 Oct;160:25-54</Citation>
<ArticleIdList><ArticleId IdType="pubmed">1960515</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Physiol Biochem Zool. 2000 May-Jun;73(3):374-81</Citation>
<ArticleIdList><ArticleId IdType="pubmed">10893177</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>J Dairy Sci. 1991 Oct;74(10):3583-97</Citation>
<ArticleIdList><ArticleId IdType="pubmed">1660498</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Biol Rev Camb Philos Soc. 1982 Aug;57(Pt 3):423-86</Citation>
<ArticleIdList><ArticleId IdType="pubmed">6753961</ArticleId>
</ArticleIdList>
</Reference>
<Reference><Citation>Nature. 2001 Oct 11;413(6856):628-31</Citation>
<ArticleIdList><ArticleId IdType="pubmed">11675785</ArticleId>
</ArticleIdList>
</Reference>
</ReferenceList>
</PubmedData>
</pubmed>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Sante/explor/MersV1/Data/PubMed/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 002443 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/PubMed/Corpus/biblio.hfd -nk 002443 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Sante |area= MersV1 |flux= PubMed |étape= Corpus |type= RBID |clé= pubmed:12879349 |texte= Energy requirements of the red kangaroo (Macropus rufus): impacts of age, growth and body size in a large desert-dwelling herbivore. }}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/PubMed/Corpus/RBID.i -Sk "pubmed:12879349" \ | HfdSelect -Kh $EXPLOR_AREA/Data/PubMed/Corpus/biblio.hfd \ | NlmPubMed2Wicri -a MersV1
This area was generated with Dilib version V0.6.33. |