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To 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 which highly differ in their responses to a plant-based diet (V diet). Analysis of transcriptomes profiles revealed 1740, 1834 and 246 probes differentially expressed among the three genotypes when fed the V diet. The use of these lines led to the discovery of potential molecular markers linked to plant-based diet utilisation, some of them belonging to new pathways, never described before. An important number of genes was related to immunity, but further investigations are needed to better understand the difference between the genotypes in their immune status response to V diet exposure. Finally, differences in expression of genes related to feed intake and sensory perception among genotypes suggested that the mechanisms underlying the differences in growth on plant-based diet are closely linked to diet acceptance. Research on plants components affecting feed intake should be thus further explored.
This article was published in the following journal.
Name: PloS one
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A nutritional plan based on the presumed diet of pre-agricultural human ancestors. It consists mainly of MEAT, EGGS, NUTS, roots and fresh VEGETABLES and FRUITS, and excludes GRAIN, LEGUMES, DAIRY PRODUCTS, and refined DIETARY SUGARS.
An approach to nutrition based on whole cereal grains, beans, cooked vegetables and the Chinese YIN-YANG principle. It advocates a diet consisting of organic and locally grown foods, seasonal vegetables, complex carbohydrates, and fewer fats, sugars, and chemically processed foods.
A diet that contains limited amounts of CARBOHYDRATES. This is in distinction to a regular DIET.
Regular course of eating and drinking adopted by a person or animal. This does not include DIET THERAPY, a specific diet prescribed in the treatment of a disease.
The seeking and acceptance by patients of health service.
Allergies Automimmune Disease Human Papillomavirus (HPV) Immunology Vaccine Immunology is the study of immunity and the defence mechanisms of the body. A greater understanding of immunology is needed to develop vaccines, understand ...