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Jaume Perezsanchez - One of the best experts on this subject based on the ideXlab platform.
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effect of fish meal replacement by plant protein sources on non specific Defence Mechanisms and oxidative stress in gilthead sea bream sparus aurata
Aquaculture, 2005Co-Authors: Ariadna Sitjabobadilla, Samuel Penallopis, Pedro Gomezrequeni, Francoise Medale, Sadasivam Kaushik, Jaume PerezsanchezAbstract:Partial or total replacement of fish meal by a mixture of plant protein (PP) sources (corn gluten, wheat gluten, extruded peas, rapeseed meal and sweet white lupin) balanced with indispensable amino acids was examined in juvenile gilthead sea bream over the course of a 6-month growth trial. A diet with fish meal (FM) as the sole protein source was compared to diets with 50%, 75% and 100% of replacement (PP50, PP75, and PP100). The possible influence of diets on growth performance, plasma metabolites, gut integrity, liver structure, anti-oxidant and immune status was evaluated. Final body weight was progressively decreased with PP inclusion, but in PP50 and PP75-fed fish, feed efficiency (FE) was significantly improved and specific growth rates remained unchanged or slightly reduced in comparison to fish fed the FM diet. In fish fed PP100 diet, FE remained unchanged and feed intake and growth decreased dramatically. In this group of fish, liver fat deposition was also largely increased, enterocytes showed an increased number of lipidic vacuoles and/or deposition of protein droplets, and the submucosa of intestine was dilated/hypertrophied and infiltrated with eosinophilic granular cells. Plasma glucose levels did not differ among the four groups, but a significant and progressive decrease of plasma cholesterol and plasma protein levels was found with FM replacement. The glutathione redox status in blood and liver increased with the increase of PP content and this increment was statistically significant in the liver of the three PP-fed groups. Glutathione reductase and γ-glutamyl transferase were also enhanced by PP inclusion. Plasma lysozyme levels were not altered by the dietary treatment, but respiratory burst of head kidney leucocytes and plasma myeloperoxidase values were significantly increased in PP75 and PP100 fish, respectively. Complement (ACH50) was significantly increased in PP50 fed fish and decreased in PP75 and PP100 groups. As a general conclusion, substitution of FM by a mixture of PP sources exerted an anti-oxidative effect, compromised growth performance only at the 100% level, and decreased one of the immune Defence Mechanisms at above 75% level.
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effect of fish meal replacement by plant protein sources on non specific Defence Mechanisms and oxidative stress in gilthead sea bream sparus aurata
Aquaculture, 2005Co-Authors: Ariadna Sitjabobadilla, Samuel Penallopis, Pedro Gomezrequeni, Francoise Medale, Sadasivam Kaushik, Jaume PerezsanchezAbstract:Partial or total replacement of fish meal by a mixture of plant protein (PP) sources (corn gluten, wheat gluten, extruded peas, rapeseed meal and sweet white lupin) balanced with indispensable amino acids was examined in juvenile gilthead sea bream over the course of a 6-month growth trial. A diet with fish meal (FM) as the sole protein source was compared to diets with 50%, 75% and 100% of replacement (PP50, PP75, and PP100). The possible influence of diets on growth performance, plasma metabolites, gut integrity, liver structure, anti-oxidant and immune status was evaluated. Final body weight was progressively decreased with PP inclusion, but in PP50 and PP75-fed fish, feed efficiency (FE) was significantly improved and specific growth rates remained unchanged or slightly reduced in comparison to fish fed the FM diet. In fish fed PP100 diet, FE remained unchanged and feed intake and growth decreased dramatically. In this group of fish, liver fat deposition was also largely increased, enterocytes showed an increased number of lipidic vacuoles and/or deposition of protein droplets, and the submucosa of intestine was dilated/hypertrophied and infiltrated with eosinophilic granular cells. Plasma glucose levels did not differ among the four groups, but a significant and progressive decrease of plasma cholesterol and plasma protein levels was found with FM replacement. The glutathione redox status in blood and liver increased with the increase of PP content and this increment was statistically significant in the liver of the three PP-fed groups. Glutathione reductase and γ-glutamyl transferase were also enhanced by PP inclusion. Plasma lysozyme levels were not altered by the dietary treatment, but respiratory burst of head kidney leucocytes and plasma myeloperoxidase values were significantly increased in PP75 and PP100 fish, respectively. Complement (ACH50) was significantly increased in PP50 fed fish and decreased in PP75 and PP100 groups. As a general conclusion, substitution of FM by a mixture of PP sources exerted an anti-oxidative effect, compromised growth performance only at the 100% level, and decreased one of the immune Defence Mechanisms at above 75% level.
Toshio Takeuchi - One of the best experts on this subject based on the ideXlab platform.
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protein nutrition and Defence Mechanisms in rainbow trout oncorhynchus mykiss
Comparative Biochemistry and Physiology Part A: Physiology, 1995Co-Authors: Viswanath Kiron, Takeshi Watanabe, Hideo Fukuda, Nobuaki Okamoto, Toshio TakeuchiAbstract:Abstract The modulation of non-specific and specific immune mechanism by dietary protein was examined in rainbow trout. The lysozyme activity was reduced in protein-deficient fish. The variation of C-reactive protein level in fish at different nutritional statuses merits further examination. Antibody production was maintained, even in protein-deficient fish, indicating that Defence systems operate preferentially to ward off infection. Pathogenic challenge trials reveal the importance of an optimum level of dietary protein, from the point of health; resistance to viruses varied among the different strains of trout.
Ariadna Sitjabobadilla - One of the best experts on this subject based on the ideXlab platform.
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effect of fish meal replacement by plant protein sources on non specific Defence Mechanisms and oxidative stress in gilthead sea bream sparus aurata
Aquaculture, 2005Co-Authors: Ariadna Sitjabobadilla, Samuel Penallopis, Pedro Gomezrequeni, Francoise Medale, Sadasivam Kaushik, Jaume PerezsanchezAbstract:Partial or total replacement of fish meal by a mixture of plant protein (PP) sources (corn gluten, wheat gluten, extruded peas, rapeseed meal and sweet white lupin) balanced with indispensable amino acids was examined in juvenile gilthead sea bream over the course of a 6-month growth trial. A diet with fish meal (FM) as the sole protein source was compared to diets with 50%, 75% and 100% of replacement (PP50, PP75, and PP100). The possible influence of diets on growth performance, plasma metabolites, gut integrity, liver structure, anti-oxidant and immune status was evaluated. Final body weight was progressively decreased with PP inclusion, but in PP50 and PP75-fed fish, feed efficiency (FE) was significantly improved and specific growth rates remained unchanged or slightly reduced in comparison to fish fed the FM diet. In fish fed PP100 diet, FE remained unchanged and feed intake and growth decreased dramatically. In this group of fish, liver fat deposition was also largely increased, enterocytes showed an increased number of lipidic vacuoles and/or deposition of protein droplets, and the submucosa of intestine was dilated/hypertrophied and infiltrated with eosinophilic granular cells. Plasma glucose levels did not differ among the four groups, but a significant and progressive decrease of plasma cholesterol and plasma protein levels was found with FM replacement. The glutathione redox status in blood and liver increased with the increase of PP content and this increment was statistically significant in the liver of the three PP-fed groups. Glutathione reductase and γ-glutamyl transferase were also enhanced by PP inclusion. Plasma lysozyme levels were not altered by the dietary treatment, but respiratory burst of head kidney leucocytes and plasma myeloperoxidase values were significantly increased in PP75 and PP100 fish, respectively. Complement (ACH50) was significantly increased in PP50 fed fish and decreased in PP75 and PP100 groups. As a general conclusion, substitution of FM by a mixture of PP sources exerted an anti-oxidative effect, compromised growth performance only at the 100% level, and decreased one of the immune Defence Mechanisms at above 75% level.
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effect of fish meal replacement by plant protein sources on non specific Defence Mechanisms and oxidative stress in gilthead sea bream sparus aurata
Aquaculture, 2005Co-Authors: Ariadna Sitjabobadilla, Samuel Penallopis, Pedro Gomezrequeni, Francoise Medale, Sadasivam Kaushik, Jaume PerezsanchezAbstract:Partial or total replacement of fish meal by a mixture of plant protein (PP) sources (corn gluten, wheat gluten, extruded peas, rapeseed meal and sweet white lupin) balanced with indispensable amino acids was examined in juvenile gilthead sea bream over the course of a 6-month growth trial. A diet with fish meal (FM) as the sole protein source was compared to diets with 50%, 75% and 100% of replacement (PP50, PP75, and PP100). The possible influence of diets on growth performance, plasma metabolites, gut integrity, liver structure, anti-oxidant and immune status was evaluated. Final body weight was progressively decreased with PP inclusion, but in PP50 and PP75-fed fish, feed efficiency (FE) was significantly improved and specific growth rates remained unchanged or slightly reduced in comparison to fish fed the FM diet. In fish fed PP100 diet, FE remained unchanged and feed intake and growth decreased dramatically. In this group of fish, liver fat deposition was also largely increased, enterocytes showed an increased number of lipidic vacuoles and/or deposition of protein droplets, and the submucosa of intestine was dilated/hypertrophied and infiltrated with eosinophilic granular cells. Plasma glucose levels did not differ among the four groups, but a significant and progressive decrease of plasma cholesterol and plasma protein levels was found with FM replacement. The glutathione redox status in blood and liver increased with the increase of PP content and this increment was statistically significant in the liver of the three PP-fed groups. Glutathione reductase and γ-glutamyl transferase were also enhanced by PP inclusion. Plasma lysozyme levels were not altered by the dietary treatment, but respiratory burst of head kidney leucocytes and plasma myeloperoxidase values were significantly increased in PP75 and PP100 fish, respectively. Complement (ACH50) was significantly increased in PP50 fed fish and decreased in PP75 and PP100 groups. As a general conclusion, substitution of FM by a mixture of PP sources exerted an anti-oxidative effect, compromised growth performance only at the 100% level, and decreased one of the immune Defence Mechanisms at above 75% level.
Douglas P Anderson - One of the best experts on this subject based on the ideXlab platform.
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glucan injection or bath exposure given alone or in combination with a bacterin enhance the non specific Defence Mechanisms in rainbow trout oncorhynchus mykiss
Aquaculture, 1993Co-Authors: Galina Jeney, Douglas P AndersonAbstract:Abstract Elevations in the non-specific Defence Mechanisms were noted after trout were injected or bathed in glucan solutions or in solutions containing the glucan combined with a bacterin, Y. ruckeri O-antigen. Periodic non-lethal blood samples showed that neutrophil activity as evaluated by the ability of the cells to stick to glass and produce oxidative radicals as detected by the nitroblue tetrazolium (NBT) assay, rose after treatments within 2 days. Elevated phagocytosis, assessed by increased uptake of glutaraldehyde-treated sheep red blood cells, also confirmed these kinetics. The numbers of circulatory glass-adherent cells from fish given the glucans by injection or bath was twice the level of the sham-treated controls; likewise the phagocytic ratio also was two-fold higher. In following the kinetics of the non-specific defensive responses, the injection of the glucan caused an immediate, slight reduction of NBT staining cells and numbers of leukocytes before the 2–3 day rise; this was not obvious in the fish given the glucan by bath. The glucans could play an important role in the prevention of diseases in fish culture.
Viswanath Kiron - One of the best experts on this subject based on the ideXlab platform.
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protein nutrition and Defence Mechanisms in rainbow trout oncorhynchus mykiss
Comparative Biochemistry and Physiology Part A: Physiology, 1995Co-Authors: Viswanath Kiron, Takeshi Watanabe, Hideo Fukuda, Nobuaki Okamoto, Toshio TakeuchiAbstract:Abstract The modulation of non-specific and specific immune mechanism by dietary protein was examined in rainbow trout. The lysozyme activity was reduced in protein-deficient fish. The variation of C-reactive protein level in fish at different nutritional statuses merits further examination. Antibody production was maintained, even in protein-deficient fish, indicating that Defence systems operate preferentially to ward off infection. Pathogenic challenge trials reveal the importance of an optimum level of dietary protein, from the point of health; resistance to viruses varied among the different strains of trout.
