Replacement of fishmeal in diets for Australian silver perch Bidyanus bidyanus (Mitchell). II. Effects of cooking on digestibility of a practical diet containing different starch products
Identifieur interne : 001252 ( Istex/Curation ); précédent : 001251; suivant : 001253Replacement of fishmeal in diets for Australian silver perch Bidyanus bidyanus (Mitchell). II. Effects of cooking on digestibility of a practical diet containing different starch products
Auteurs : D A J. Stone [Australie] ; G L Allan [Australie] ; S. Parkinson [Australie] ; J. Frances [Australie]Source :
- Aquaculture Research [ 1355-557X ] ; 2003-02.
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Abstract
Abstract The interactive effects of cooking and starch type on the dry matter, gross energy and protein digestibility of diets fed to fingerling silver perch were examined. Nine experimental diets were made: a reference diet either uncooked or cooked, six other diets comprising uncooked reference diet supplemented with 30% uncooked or cooked wheat, maize or potato starch and one diet comprising uncooked reference diet supplemented with 15% pregelatinized maize starch. Cooking involved autoclaving at 121 °C for 15 min. The indirect method was used to calculate apparent digestibility coefficients, and chromic oxide (1%) was used as the inert indicator. Both ingredient type and cooking influenced dry matter and gross energy digestibility of diets. All diets had significantly different digestibility coefficients in the following order (from most to least digestible): reference > wheat > maize > potato, for both dry matter and gross energy. Cooking significantly increased the apparent digestibility of diets for both dry matter and gross energy. There was no significant effect of ingredient or cooking or their interaction on protein digestibility. Dry matter and energy digestibility of the diet containing pregelatinized maize starch were significantly higher than for diets containing cooked or uncooked starch products. Ingredient digestibility followed the same trend as diet digestibility. The results from this study indicate that the successful use of starch in practical diets for silver perch is dependent on the origin and processing of the starch. The significant benefits of cooking in the reference diet suggest that pelleted diets should be cooked (e.g. steam conditioned or extruded).
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DOI: 10.1046/j.1365-2109.2003.00772.x
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Stone</name><affiliation wicri:level="1"><mods:affiliation>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW 2316, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW 2316</wicri:regionArea></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"><mods:affiliation>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW 2316, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW 2316</wicri:regionArea></affiliation></author><author><name sortKey="Parkinson, S" sort="Parkinson, S" uniqKey="Parkinson S" first="S" last="Parkinson">S. Parkinson</name><affiliation wicri:level="1"><mods:affiliation>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW 2316, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW 2316</wicri:regionArea></affiliation></author><author><name sortKey="Frances, J" sort="Frances, J" uniqKey="Frances J" first="J" last="Frances">J. 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II. Effects of cooking on digestibility of a practical diet containing different starch products</title><author><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><affiliation wicri:level="1"><mods:affiliation>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW 2316, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW 2316</wicri:regionArea></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"><mods:affiliation>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW 2316, Australia</mods:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>NSW Fisheries, Port Stephens Fisheries Centre, Taylors Beach, NSW 2316</wicri:regionArea></affiliation></author><author><name sortKey="Parkinson, S" sort="Parkinson, S" uniqKey="Parkinson S" first="S" last="Parkinson">S. 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Nine experimental diets were made: a reference diet either uncooked or cooked, six other diets comprising uncooked reference diet supplemented with 30% uncooked or cooked wheat, maize or potato starch and one diet comprising uncooked reference diet supplemented with 15% pregelatinized maize starch. Cooking involved autoclaving at 121 °C for 15 min. The indirect method was used to calculate apparent digestibility coefficients, and chromic oxide (1%) was used as the inert indicator. Both ingredient type and cooking influenced dry matter and gross energy digestibility of diets. All diets had significantly different digestibility coefficients in the following order (from most to least digestible): reference > wheat > maize > potato, for both dry matter and gross energy. Cooking significantly increased the apparent digestibility of diets for both dry matter and gross energy. There was no significant effect of ingredient or cooking or their interaction on protein digestibility. Dry matter and energy digestibility of the diet containing pregelatinized maize starch were significantly higher than for diets containing cooked or uncooked starch products. Ingredient digestibility followed the same trend as diet digestibility. The results from this study indicate that the successful use of starch in practical diets for silver perch is dependent on the origin and processing of the starch. The significant benefits of cooking in the reference diet suggest that pelleted diets should be cooked (e.g. steam conditioned or extruded).</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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