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Performance, nutrient digestibility and physiological resilience of juvenile gi...
Mendes, Rodrigo; Teodósio, Rita; Dias, Jorge; Fachadas Gato Coelho Gonçalves, Ana Teresa; Galileu Speranza, Lais; Magalhães, Sara; Aires, TiagoAquafeeds formulated with organic or circular economy-derived ingredients aim to enhance sustainability and consumer acceptance. This study evaluated the global warming potential (GWP) and digestibility of such feeds, and assessed their effects on performance, feed utilisation and physiological resilience, defined as the ability to maintain tissue function and integrity under different feeding conditions of juv...
Fish protein hydrolysates mitigate the adverse effects of no‐fishmeal diets in ...
Aragão, Cláudia; Colen, Rita Isabel Pontes Barbosa; Teodósio, Rita; Orelhas Cabano, Miguel; Antelo, Luís T.; Vázquez, José Antonio; Engrola, SofiaThe aquaculture industry must continue to reduce its reliance on finite marine ingredients and promote biocircularity to enhance sustainability. This study evaluated the effects of no-fishmeal (FM) diets and fish protein hydrolysates (FPHs) on the growth performance, antioxidant status, and immune responses of gilthead seabream (Sparus aurata). Following established conditions, two FPHs were prepared from the e...
Socially acceptable feed formulations may impact the voluntary feed intake and ...
Mendes, Rodrigo; Rena, Paulo; Dias, Jorge; Fachadas Gato Coelho Gonçalves, Ana Teresa; Teodósio, Rita; Engrola, Sofia; Sánchez-Vázquez, Francisco J.Society is becoming more demanding with aquaculture’s environmental footprint and animal wellbeing. In order to potentially mitigate these concerns, feed formulations could be based on eco-efficient (circular economy-driven) or organic ingredients. This study aimed to investigate the growth performance, feed utilization, and health status of juvenile Nile tilapia (Oreochromis niloticus) when fed with such feeds...
Taurine supplementation to Plant-Based Diets improves lipid metabolism in Seneg...
Raquel Cêa de Aragão Teixeira, Cláudia; Teodósio, Rita; Colen, R.; Richard, Nadège; Rønnestad, Ivar; Dias, Jorge; Conceição, Luís E. C.; Ribeiro, LauraTaurine is a sulphur-containing amino acid with important physiological roles and a key compound for the synthesis of bile salts, which are essential for the emulsion and absorption of dietary lipids. This study aimed to evaluate the effects of taurine supplementation to low-fishmeal diets on the metabolism of taurine, bile acids, and lipids of Senegalese sole. A fishmeal (FM) and a plant-protein-based (PP0) di...
Effects of dietary curcumin in growth performance, oxidative status and gut mor...
Xavier, Maria João; Navarro-Guillén, Carmen; Lopes, André; Colen, R.; Teodósio, Rita; Mendes, Rodrigo; Oliveira, Beatriz; Valente, Luisa M.P.An imbalance in the production and detoxification of reactive oxygen species and other oxidants can disrupt a l l types of cellular compounds, and lead to a state of oxidative stress. Preventing this state is essential to improve growth and health in animal production. Therefore, the aim of this work was to assess i f the dieta r y supple-mentation of curcumin cou l d improve the antioxidant status and intestin...
Amino acid metabolism in gilthead seabream is affected by the dietary protein t...
Teodósio, Rita; Aragão, Cláudia; Conceicao, Luis; Dias, Jorge; Engrola, SofiaThe dietary protein to energy ratio (P/E) has proven to influence protein utilization and/or growth in several fish species. This study intended to unravel the bioavailability and metabolic fate of lysine and methionine in gilthead seabream (Sparus aurata) juveniles fed plant diets with different P/E ratios. Seabream juveniles were fed two isonitrogenous diets (45% crude protein) differing in crude lipids (20 a...
Metabolic and nutritional responses of Nile tilapia juveniles to dietary methio...
Teodósio, Rita; Engrola, Sofia; Cabano, Miguel; Colen, R.; Masagounder, Karthik; Raquel Cêa de Aragão Teixeira, CláudiaCommercial diets for tilapia juveniles contain high levels of plant protein sources. Soybean meal has been utilised due to its high protein content; however, soy-based diets are limited in methionine (Met) and require its supplementation to fulfil fish requirements. DL-Methinone (DL-Met) and Ca bis-methionine hydroxyl analogue (MHA-Ca) are synthetic Met sources supplemented in aquafeeds, which may differ in bio...
Modulation of dietary protein to lipid ratios for gilthead seabream on-growing ...
Aragão, Cláudia; Cabano, Miguel; Colen, R.; Teodósio, Rita; Gisbert, Enric; Dias, Jorge; Engrola, SofiaGilthead seabream (Sparus aurata) tend to increase fat deposition during summer farming conditions in the Mediterranean, which may negatively affect productive performance and consumers' quality perception of the final product. Therefore, this study evaluated the impacts of protein to lipid ratios in low fishmeal/fish oil diets on growth performance, body composition, feed conversion and nutrient utilization of...
Metabolic fate is defined by amino acid nature in gilthead seabream fed differe...
Teodósio, Rita; Aragão, Cláudia; Conceição, Luís E. C.; Dias, Jorge; Engrola, SofiaThe sustainability of the Aquaculture industry relies on optimising diets to promote nitrogen retention and maximise fish growth. The aim of this study was to assess how different dietary formulations influence the bioavailability and metabolic fate of distinct amino acids in gilthead seabream juveniles. Amino acids (lysine, tryptophan, and methionine) were selected based on their ketogenic and/or glucogenic na...
The effect of tank cover on welfare of farmed Nile tilapia
Saraiva, João L.; Nogueirinha, Margarida; Teodósio, Rita; Aragão, Cláudia; Engrola, Sofia; Arechavala Lopez, PabloWelfare in aquaculture is a pressing topic. One of the main measures to improve the life of farmed fish is implementing environmental enrichment, which can include the addition of structural covers to rearing tanks. Here we test the effects of tank covers (fully covered, 50 % covered and uncovered) in an all-male population (N = 75 tagged individuals: 5 individuals per tank, 5 tanks per treatment) of farmed Nil...