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Detection of new pathways involved in the acceptance and the utilisation of a plant-based diet in isogenic lines of rainbow trout fry ArchiMer
Callet, Therese; Dupont-nivet, Mathilde; Cluzeaud, Marianne; Jaffrezic, Florence; Laloe, Denis; Kerneis, Thierry; Labbe, Laurent; Quillet, Edwige; Geurden, Inge; Mazurais, David; Skiba-cassy, Sandrine; Medale, Francoise.
o meet the growing demand of fish feed for aquaculture, an increasing proportion of marine ingredients are being replaced by blends of plant products. However, the total replacement of marine ingredients in salmonid diets impairs fish performance. This is particularly true during the early fry stage and this stage is therefore considered of particular importance. In rainbow trout (RBT), the existence of a genetic variability to survive and grow with plant-based diets devoid of marine ingredients has now been proved, but the mechanisms behind are little studied especially at early stage. To investigate these, we analysed the whole transcriptome of three isogenic lines of RBT fry, which have similar growth when fed a marine resources-based diet (M diet) but...
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Ano: 2018 URL: https://archimer.ifremer.fr/doc/00452/56371/57969.pdf
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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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