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| Wache, Yann; Auffray, Francoise; Gatesoupe, Joel; Zambonino, Jose-luis; Gayet, Vincent; Labbe, Laurent; Quentel, C. |
| Two strains of Saccharomyces cerevisiae were tested as probiotics for rainbow trout fry, during the first month of feeding. Each strain was introduced into separate diets, at the rate of 106 CFU g− 1 and their effects were compared with those of a control diet. Two rearing conditions were simultaneously compared, to test the adaptability of the probiotic treatment. From start feeding onwards, the water supply came from either spring or river, resulting in two different temperature ranges, 11¿11.5 and 7¿8 °C respectively. Growth and development were optimal in spring water, while some delay was observed with colder river water. A slight but significant increase in mortality was also observed in the river group. In all groups, the counts of... |
| Tipo: Text |
Palavras-chave: Debaryomyces hansenii; Yeast; Brush border membrane; Gut maturation; Larval development; Start feeding. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1816.pdf |
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| Buchet, Vincent; Zambonino, Jose-luis; Cahu, Chantal. |
| Red drum larvae were fed from day 11 to day 24 post-hatch, with Artemia (LP group) or two isoproteinic-formulated diets with varying lipid levels, 15% (L15 group) and 30% (L30 group). The lipid fraction was composed of a mixture of cod liver oil and soy lecithin. Larvae fed Artemia exhibited the greatest length, L30 diet induced a larvae length significantly greater than that obtained with L15 diet (P < 0,05). No difference was observed in larvae survival among the three dietary groups. The increase in dietary lipid concentration led to an increase in amylase and trypsin secretion levels in 24-day-old larvae. The pancreatic secretion level measured in L30 group was close to that of LP group, suggesting that the maturation of the pancreatic functions was... |
| Tipo: Text |
Palavras-chave: Gut maturation; Digestive enzymes; Compound diet; Lipid; Larvae; Red drum. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/publication-503.pdf |
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| Tovar Ramirez, Dariel; Zambonino-infante, Jose-luis; Cahu, Chantal; Gatesoupe, Joel; Vazquez Juarez, R. |
| Recent results have demonstrated that live yeast in diets improved gut maturation in sea bass larvae. In this study, we tested the absence and two levels of live yeast in sea bass larvae diets. Specimens were fed from time of mouth opening to 37 days after hatching a diet of 0%, 1.1%, or 5.7% wet weight of live yeast (Debaryomyces hansenii CBS 8339). Yeast incorporation improved survival 10%, and reduced malformed larvae. In groups fed 1.1% yeast, only 1% of larvae were malformed, compared to 14% in the control group. Final mean weight in groups fed 1.1% yeast was twice that of other groups. Activities and concentrations of mRNA trypsin and lipase were higher in the two groups fed yeast than in the control group, whereas activity and concentration of mRNA... |
| Tipo: Text |
Palavras-chave: Polyamines; Lipase; Trypsin; Amylase; Enzymes; Gut maturation; Fish larvae. |
| Ano: 2004 |
URL: https://archimer.ifremer.fr/doc/2004/publication-831.pdf |
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| Gatesoupe, Joel. |
| This minireview summarizes the present state of knowledge concerning the importance of yeasts in fish gut. Yeasts have been commonly isolated in the gastrointestinal tract, and high population densities were sometimes noted in healthy fish, but the data were quite variable in terms of colony counts and taxonomical diversity. Rhodotorula sp. seemed relatively frequent in both marine and freshwater fish, and Debaryomyces hansenii has been found to be dominant in rainbow trout. Some other dominant strains have been described, such as Metschnikowia zobelii, Trichosporon cutaneum, and Candida tropicalis in marine fish, and Candida sp., Saccharomyces cerevisiae, and Leucosporidium sp. in rainbow trout. The natural proliferation of yeasts in fish mucus may be... |
| Tipo: Text |
Palavras-chave: Immune system; Growth promotion; Gut maturation; Gastrointestinal microbiota; Probiotics; Yeast. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2144.pdf |
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| Delcroix, Jeremy; Gatesoupe, F.j.; Desbruyeres, Elisabeth; Huelvan, Christine; Le Delliou, Herve; Le Gall, Marie-madeleine; Quazuguel, Patrick; Mazurais, David; Zambonino-infante, Jose-luis. |
| Protein hydrolysate is an essential component of dry starter diets for fish larvae, as promoting healthy development. Peptides are also suitable substrates for many intestinal microbes. Five experimental diets were compared to a control diet (CONT) supplemented with a commercial fish protein hydrolysate. Each diet contained one marine protein hydrolysate, which differed by the proportion of di- and tri-peptides, and by raw materials. Two diets (HYD4 and HYD5) stimulated larval growth compared with CONT. Two other diets (HYD1 and HYD2) yielded inferior growth. HYD1 was detrimental for survival, which was associated with an up-regulation of genes involved in inflammation and antioxidative responses, while the gene coding for osteocalcin was down-regulated in... |
| Tipo: Text |
Palavras-chave: Compound diets; Denaturing gradient gel electrophoresis; Digestive enzymes; Gene expression; Gut maturation; Peptides. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00197/30865/29268.pdf |
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