15 documents found, page 1 of 2
Lumpfish physiological response to chronic stress
Lopes, Tiago da Santa; Costas, Benjamin; Ramos-Pinto, Lourenço; Reynolds, Patrick; Imsland, Albert K. D.; Fernandes, Jorge M. O.; Aragão, CláudiaIn this study, we explored the effects of chronic stress on lumpfish (Cyclopterus lumpus) physiological, immune response, health, and plasma free amino acids. 3 groups of lumpfish were exposed to 1-minute air exposure. 1 group was exposed to stress once per week, a second group exposed 2 times per week, and a third group exposed 4 times per week. The present study revealed significant alterations in immunity an...
Sustainable fish meal-free diets for gilthead sea bream (Sparus aurata): integr...
Fernandes, Ana M.; Calduch-Giner, Josep Àlvar; Pereira, Gabriella V.; Fachadas Gato Coelho Gonçalves, Ana Teresa; Dias, Jorge; Johansen, JohanThe growth of the aquaculture industry requires more sustainable and circular economy-driven aquafeed formulas. Thus, the goal of the present study was to assess in farmed gilthead sea bream (Sparus aurata L.) how different combinations of novel and conventional fish feed ingredients supported proper animal performance in terms of growth and physiological biomarkers of blood/liver/head kidney. A 77-day feeding ...
Effect of the alveolate parasite Perkinsus olseni infection on sexual maturatio...
Fernández-Boo, Sergio; Duarte, Catarina; Guévélou, Eric; Sousa, Joana; Freitas, Rosa; Joaquim, Sandra; Costas, Benjamin; Magalhães, LuísaThe effect of Perkinsus olseni infection on the reproduction ability of clams has been underestimated so far. Although some studies found evidence of reduction of egg production and delay in gonad maturation after infection, the total effect of the infection is still unclear. In this study, Ruditapes decussatus clams from a naïve population were injected with two different doses of P. olseni parasites, a low do...
Two probiotic candidates of the genus psychrobacter modulate the immune respons...
Wuertz, Sven; Beça, Filipa; Kreuz, Eva; Wanka, Konrad M.; Azeredo, Rita; Machado, Marina; Costas, BenjaminProbiotic bacteria are a recognized alternative to classical methods of disease prophylaxis and therapy. We tested the effects of their application on the immune reaction in juvenile turbot. To prevent digestion of the probiotics, rectal administration was applied to maximise colonization, by-passing digestion in the stomach. The application of Psychrobacter nivimaris and Psychrobacter faecalis showed beneficia...
Comparative analysis between synthetic vitamin E and natural antioxidant source...
Pereira, Ricardo; Costa, Mónica; Velasco, Cristina; Cunha, Luís M.; Lima, Rui C.; Baião, Luís F.; Batista, Sónia; Marques, Alexandra; Sá, TiagoSynthetic vitamin E is commonly used in aquafeeds to prevent oxidative stress in fish and delay feed and flesh oxidation during storage, but consumers’ preferences tend towards natural antioxidant sources. The potential of vegetable antioxidants-rich coproducts, dried tomato (TO), carrot (CA) and coriander (CO) was compared to that of synthetic vitamin E included in diets at either a regular (CTRL; 100 mg kg−1)...
Innovative swine blood hydrolysates as promising ingredients for European seaba...
Resende, Daniela; Costas, Benjamin; Sá, Tiago; Golfetto, Umberto; Machado, Marina; Pereira, Miguel; Pereira, Carlos; Marques, BiancaHydrolysates from high-protein coproducts are rich in bioactive peptides (small amino acid chains with properties beyond their nutritional value). When included in aquafeeds, they may promote fish robustness while increasing animal blood value and minimizing waste, contributing to a circular economy. This work assessed how innovatively produced blood hydrolysates (BH) included in plant-based diets for European ...
Functional and molecular mmune response of rainbow trout (Oncorhynchus mykiss) ...
Fajardo, Carlos; Santos, Paulo; Passos, Ricardo; Vaz, Mariana; Azeredo, Rita; Machado, Marina; Fernández-Boo, Sergio; Baptista, Teresa; Costas, BenjaminCurrently, aquaculture production of rainbow trout (Oncorhynchus mykiss) is a multibillion dollar industry; nevertheless, the development of this sector has not been exempt from pitfalls related to the recurrent presence of pathogens of bacterial origin. This is the case of Yersinia ruckeri, the etiologic agent of the infectious pathology known as Enteric Red Mouth Disease (ERM), causing serious economic losses...
Short-term immune responses of Gilthead Seabream (Sparus aurata) Juveniles agai...
Santos, Paulo; Peixoto, Diogo; Ferreira, Inês; Passos, Ricardo; Pires, Pedro; Simões, Marco; Pousão-Ferreira, Pedro; Baptista, Teresa; Costas, BenjaminPhotobacteriosis is a septicaemic bacterial disease affecting several marine species around the globe, resulting in significant economic losses. Although many studies have been performed related to the pathogen virulence and resistance factors, information regarding the host defence mechanisms activated once an infection takes place is still scarce. The present study was designed to understand innate immune res...
Microalgal biomasses have potential as ingredients in microdiets for Senegalese...
Peixoto, Diogo; Pinto, Wilson; Gonçalves, Ana Teresa; Machado, Marina; Reis, Bruno; Silva, Joana; Navalho, Joao; Dias, Jorge; Conceicao, LuisSenegalese sole (Solea senegalensis) production presents several nutritional challenges, making this species a good candidate to study the dietary potential of bioactive compounds. Since proper nutrition plays a fundamental role in fish biology, it is necessary to further investigate species-specific and well-balanced diets in order to improve Senegalese sole juvenile farming. Algae have antioxidant properties,...
Inclusion of blood hydrolysates in European seabass (D. labrax) diets: impact o...
Resende, Daniela; Costas, Benjamin; Sá, Tiago; Golfetto, Umberto; Machado, Marina; Pereira, Miguel; Pereira, Carlos; Marques, Bianca; Pereira, RicardoBioactive peptides are small amino acid chains with interesting properties (beyond their nutritional value), including antioxidant, mineral-binding, immunomodulatory or antimicrobial activities [1]. In this study, we hypothesised that including blood hydrolysates (BH) in aquafeeds could promote fish robustness, increase the economic value of animal blood and minimize waste, contributing to a circular economy. A...