Carbohydrate utilization by juvenile silver perch, Bidyanus bidyanus (Mitchell). II. Digestibility and utilization of starch and its breakdown products
Identifieur interne : 001244 ( Main/Exploration ); précédent : 001243; suivant : 001245Carbohydrate utilization by juvenile silver perch, Bidyanus bidyanus (Mitchell). II. Digestibility and utilization of starch and its breakdown products
Auteurs : D A J. Stone [Australie] ; G L Allan [Australie] ; A J Anderson [Australie]Source :
- Aquaculture Research [ 1355-557X ] ; 2003-01.
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Abstract
Abstract The ability of silver perch (Bidyanus bidyanus) to digest and utilize dietary starch or starch breakdown products was investigated. For experiment 1 the ability of silver perch (2.7 ± 0.01 g) to digest wheat starch at two dietary inclusion levels (30% or 60%), each at four levels of gelatinization (0%, 25%, 50% or 80%), was investigated over a 31‐day period. For experiment 2, the ability of silver perch (15.9± 0.25 g) to digest wheat starch, dextrin (at three levels of dextrinization), maltose, glucose and pea starch, all at the 30% inclusion level, was investigated over a 41‐day period. Water temperature for both experiments was 25 ± 1 °C. Apparent digestibility coefficients (ADCs) for starch, dry matter (DM) and energy were affected by both degree of gelatinization (80% > 50% > 25% = 0%) and inclusion level (30% > 60%). Specific growth rate (SGR) was unaffected by the inclusion of 30% starch; however, it was reduced at the 60% starch content level. Degree of gelatinization had no effect on SGR. For experiment 2, there were significant differences between carbohydrate and DM ADCs for the test ingredients. The carbohydrate, DM and energy ADCs were ranked as follows: dextrin (Fieldose 9) = dextrin (Fieldose 17) = dextrin (Fieldose 30) = gelatinized wheat starch = maltose = glucose > raw wheat starch > raw pea starch. The protein ADC of the diets, postprandial plasma glucose concentration and SGR were all unaffected by ingredient type. For both experiments, HSI tended to increase with carbohydrate inclusion. Liver glycogen concentrations were also elevated, but muscle glycogen and liver and muscle triacylglycerol concentrations were unaffected. Digestibility of starch by silver perch is clearly affected by inclusion content and processing.
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DOI: 10.1046/j.1365-2109.2003.00776.x
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Stone</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW</wicri:regionArea><wicri:noRegion>NSW</wicri:noRegion></affiliation></author><author><name sortKey="Allan, G L" sort="Allan, G L" uniqKey="Allan G" first="G L" last="Allan">G L Allan</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW</wicri:regionArea><wicri:noRegion>NSW</wicri:noRegion></affiliation></author><author><name sortKey="Anderson, A J" sort="Anderson, A J" uniqKey="Anderson A" first="A J" last="Anderson">A J Anderson</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>School of Life Sciences, Queensland University of Technology, Brisbane, Queenslanld</wicri:regionArea><wicri:noRegion>Queenslanld</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Aquaculture Research</title><idno type="ISSN">1355-557X</idno><idno type="eISSN">1365-2109</idno><imprint><publisher>Blackwell Science Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2003-01">2003-01</date><biblScope unit="volume">34</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="109">109</biblScope><biblScope unit="page" to="121">121</biblScope></imprint><idno type="ISSN">1355-557X</idno></series><idno type="istex">6D6C1400C5D7BF3473995C3D2F1E3E8038088B6C</idno><idno type="DOI">10.1046/j.1365-2109.2003.00776.x</idno><idno type="ArticleID">ARE0776</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1355-557X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>carbohydrate</term><term>digestibility</term><term>processing</term><term>silver perch</term><term>starch</term><term>utilization</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Abstract The ability of silver perch (Bidyanus bidyanus) to digest and utilize dietary starch or starch breakdown products was investigated. For experiment 1 the ability of silver perch (2.7 ± 0.01 g) to digest wheat starch at two dietary inclusion levels (30% or 60%), each at four levels of gelatinization (0%, 25%, 50% or 80%), was investigated over a 31‐day period. For experiment 2, the ability of silver perch (15.9± 0.25 g) to digest wheat starch, dextrin (at three levels of dextrinization), maltose, glucose and pea starch, all at the 30% inclusion level, was investigated over a 41‐day period. Water temperature for both experiments was 25 ± 1 °C. Apparent digestibility coefficients (ADCs) for starch, dry matter (DM) and energy were affected by both degree of gelatinization (80% > 50% > 25% = 0%) and inclusion level (30% > 60%). Specific growth rate (SGR) was unaffected by the inclusion of 30% starch; however, it was reduced at the 60% starch content level. Degree of gelatinization had no effect on SGR. For experiment 2, there were significant differences between carbohydrate and DM ADCs for the test ingredients. The carbohydrate, DM and energy ADCs were ranked as follows: dextrin (Fieldose 9) = dextrin (Fieldose 17) = dextrin (Fieldose 30) = gelatinized wheat starch = maltose = glucose > raw wheat starch > raw pea starch. The protein ADC of the diets, postprandial plasma glucose concentration and SGR were all unaffected by ingredient type. For both experiments, HSI tended to increase with carbohydrate inclusion. Liver glycogen concentrations were also elevated, but muscle glycogen and liver and muscle triacylglycerol concentrations were unaffected. Digestibility of starch by silver perch is clearly affected by inclusion content and processing.</div></front></TEI><affiliations><list><country><li>Australie</li></country></list><tree><country name="Australie"><noRegion><name sortKey="Stone, D A J" sort="Stone, D A J" uniqKey="Stone D" first="D A J" last="Stone">D A J. Stone</name></noRegion><name sortKey="Allan, G L" sort="Allan, G L" uniqKey="Allan G" first="G L" last="Allan">G L Allan</name><name sortKey="Anderson, A J" sort="Anderson, A J" uniqKey="Anderson A" first="A J" last="Anderson">A J Anderson</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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