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Early feeding of carnivorous rainbow trout (Oncorhynchus mykiss) with a hyperglucidic diet during a short period: effect on dietary glucose utilization in juveniles ArchiMer
Geurden, Inge; Aramendi, M; Zambonino, Jose-luis; Panserat, S.
Based on the concept of nutritional programming in higher vertebrates, we tested whether an acute hyperglucidic stimulus during early life could induce a long-lasting effect on carbohydrate utilization in carnivorous rainbow trout. The trout were fed a hyperglucidic diet (60% dextrin) at two early stages of development: either at first feeding Q days, stimulus 1) or after yolk absorption (5 days, stimulus 2). Before and after the hyperglucidic stimulus, they received a commercial diet until juvenile stage (> 10 g). Fish that did not experience the hyperglucidic stimuli served as controls. The short- and long-term effects of the stimuli were evaluated by measuring the expression of five key genes involved in carbohydrate utilization: a-amylase, maltase...
Tipo: Text Palavras-chave: Glucose metabolism; Intestinal glucose transport; Carbohydrate digestion; Nutritional programming; Fish nutrition.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-2728.pdf
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Rapid metabolic adaptation in European sea bass (Dicentrarchus labrax) juveniles fed different carbohydrate sources after heat shock stress ArchiMer
Enes, P; Panserat, S; Kaushik, Sadasivam; Oliva Teles, A.
A study was conducted to evaluate the effect of two dietary carbohydrate sources (waxy maize starch and glucose) on the metabolic adaptation of sea bass juveniles (initial weight: 24 g) to a heat shock treatment (temperature rise from 18 degrees C to 25 degrees C within 24 h). Two isonitrogenous and isolipidic diets were fon-nulated to contain 20% waxy maize starch (WS diet) or 20% glucose (GLU diet). Triplicate groups of fish were fed to near satiation for 4 weeks at both temperatures (18 degrees C and 25 degrees C). Then, fish previously maintained at 18 degrees C were submitted to a heat shock (18 degrees C to 25 degrees C) and continued to be fed with the same diets during I more week. The higher water temperature significantly improved growth...
Tipo: Text Palavras-chave: Waxy maize starch; Temperature; Lipogenic enzymes; HSP70; Glycolytic enzymes; Glucose; Gluconeogenic enzymes; European sea bass; Carbohydrate utilization; Biomarker.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-6958.pdf
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Reduced lipid intake leads to changes in digestive enzymes in the intestine but has minor effect on key enzymes of hepatic intermediary metabolism in rainbow trout (Oncorhynchus mykiss) ArchiMer
Ducasse Cabanot, S; Zambonino, Jose-luis; Richard, N; Medale, Francoise; Corraze, Genevieve; Mambrini, M; Robin, Jean; Cahu, Chantal; Kaushik, Sadasivam; Panserat, S.
For sustainable aquaculture, the removal of marine resource ingredients in fish diets is an important objective. While most studies focus on the replacement of fish oil by vegetable oil, little is known on the nutritional effects of presence (which corresponds to the control diet) or absence of dietary fish oil. We studied fatty acid composition of brush-border membranes and digestive enzyme activities of the intestine and measured the expression and activities of several enzymes involved in the hepatic intermediary metabolism of rainbow trout (Oncorhynchus mykiss) fed for 7 weeks with or without fish oil. The diets were pair-fed to ensure that fish fed either diet had comparable carbohydrate and protein intakes. Absence of fish oil significantly reduced...
Tipo: Text Palavras-chave: Rainbow trout; Metabolism; Fish oil; Digestion; Aquaculture.
Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3506.pdf
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