EsturgeonV1, Main, Exploration, bibRecordById, Pascal:96-0302696

Limitations of carrageenan microbound diets for feeding white sturgeon, Acipenser transmontanus , larvae

Identifieur interne : 001931 ( Main/Exploration ); précédent : 001930; suivant : 001932

Limitations of carrageenan microbound diets for feeding white sturgeon, Acipenser transmontanus , larvae

Auteurs : Anna Gawlicka [Canada] ; Line Mclaughlin [Canada] ; Silas S. O. Hung [États-Unis] ; Joël De La Noüe [Canada]

Source :

Aquaculture [ 0044-8486 ] ; 1996.

RBID : ISTEX:E2FCF7162990016A0CD9B56CBC44D774A0FDE1CF

Descripteurs français

Pascal (Inist)
- Acipenser transmontanus, Acipenseridae, Activité enzymatique, Alevin, Aliment pour animal, Aminoacide, Animal jeune, Carraghénane, Gastrointestinal, Histologie, Jeûne alimentaire, Microencapsulation, Métabolisme, Prise poids, Survie.
Wicri :
- topic : Histologie.

English descriptors

KwdEn :
- Acipenser transmontanus, Aminoacid, Carrageenan, Enzymatic activity, Fasting, Feed, Fry, Gastrointestinal, Histology, Metabolism, Microencapsulation, Survival, Weight gain, Young animal.

Abstract

Utilization of carrageenan microbound (CMB) diets by white sturgeon larvae was evaluated using biochemical, histological and histochemical methods. Compared with a control group fed Biodiet, a commercial salmonid diet, larvae fed the CMB diets for 16 days had a significantly (P < 0.05) higher moisture content but lower growth, survival, and whole body amino acid and lipid contents. Although growth and survival of CMB-fed larvae were significantly higher than those of starved larvae, histological signs such as degenerated cells in liver and intestine are indicative of starvation-like conditions. Feeding CMB diets also induced a decrease in activity of alkaline phosphatase, aminopeptidase M, and nonspecific esterase in the brush border of intestinal cells. Even though the CMB diets present three desirable characteristics for sturgeon larvae such as appropriate size, soft texture and availability on the bottom of tanks, they are not recommended because they have three major drawbacks. First, CMB diets have to be kept fresh, and distributed in solution for a bottom feeder like sturgeon. Second, sturgeon larvae have trouble locating and ingesting the CMB diets. Finally, assimilation of nutrients from CMB diets is possibly restricted by limited ability of sturgeon larvae to break down and digest the carrageenan matrix.

Url:

https://api.istex.fr/document/E2FCF7162990016A0CD9B56CBC44D774A0FDE1CF/fulltext/pdf

DOI: 10.1016/0044-8486(95)01220-6

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">Utilization of carrageenan microbound (CMB) diets by white sturgeon larvae was evaluated using biochemical, histological and histochemical methods. Compared with a control group fed Biodiet, a commercial salmonid diet, larvae fed the CMB diets for 16 days had a significantly (P < 0.05) higher moisture content but lower growth, survival, and whole body amino acid and lipid contents. Although growth and survival of CMB-fed larvae were significantly higher than those of starved larvae, histological signs such as degenerated cells in liver and intestine are indicative of starvation-like conditions. Feeding CMB diets also induced a decrease in activity of alkaline phosphatase, aminopeptidase M, and nonspecific esterase in the brush border of intestinal cells. Even though the CMB diets present three desirable characteristics for sturgeon larvae such as appropriate size, soft texture and availability on the bottom of tanks, they are not recommended because they have three major drawbacks. First, CMB diets have to be kept fresh, and distributed in solution for a bottom feeder like sturgeon. Second, sturgeon larvae have trouble locating and ingesting the CMB diets. Finally, assimilation of nutrients from CMB diets is possibly restricted by limited ability of sturgeon larvae to break down and digest the carrageenan matrix.</div>
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Limitations of carrageenan microbound diets for feeding white sturgeon, Acipenser transmontanus , larvae

Limitations of carrageenan microbound diets for feeding white sturgeon, Acipenser transmontanus , larvae

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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