5 documents found, page 1 of 1
Effects of calcium carbonate inclusion in low fishmeal diets on growth, gastroi...
Parma, Luca; Yufera, Manuel; Navarro-Guillen, Carmen; Moyano, Francisco J.; Soverini, Matteo; D'Amico, Federica; Candela, Marco; Fontanillas, RamonFishmeal (FM) possesses one of the highest buffering capacities in comparison to most alternative vegetable aquafeed ingredients and its decreasing content in current formulations might affect the ideal gastrointestinal environment for digestive enzyme action and gut bacterial community of carnivorous fish species. A study was undertaken, therefore, to assess growth response, gastrointestinal pH, digestive enzy...
Ghrelin in Senegalese sole (Solea senegalensis) post-larvae: Paracrine effects ...
Navarro-Guillén, Carmen; Yufera, Manuel; Engrola, SofiaSuccessful food consumption and digestion depend on specifics anatomical and behavioral characteristics and corresponding physiological functions that should be ready to work at the appropriate time. The physiological regulation of appetite and ingestion involves a complex integration of peripheral and central signals by the brain. Ghrelin is a peptide hormone involved in the control of energy homeostasis and i...
Daily feeding and protein metabolism rhythms in Senegalese sole post-larvae
Navarro, Carmen; Yufera, Manuel; Engrola, S.Fish hatcheries must adapt larval feeding protocols to feeding behavior and metabolism patterns to obtain more efficient feed utilization. Fish larvae exhibit daily ingesting rhythms rather than ingesting food continuously throughout the day. The aim of this study was to determine the daily patterns of feed intake, protein digestibility, protein retention and catabolism in Senegalese sole post-larvae (Solea sen...
Fish larval nutrition and feed formulation: knowledge gaps and bottlenecks for ...
Hamre, Kristin; Yufera, Manuel; Ronnestad, Ivar; Boglione, Clara; Conceicao, Luis E. C.; Izquierdo, MarisolDespite considerable progress in recent years, many questions regarding fish larval nutrition remain largely unanswered, and several research avenues remain open. A holistic understanding of the supply line of nutrients is important for developing diets for use in larval culture and for the adaptation of rearing conditions that meet the larval requirements for the optimal presentation of food organisms and/or m...
Teleost fish larvae adapt to dietary arachidonic acid supply through modulation...
Alves Martins, Dulce; Rocha, Filipa; Martinez-Rodriguez, Gonzalo; Bell, Gordon; Morais, Sofia; Castanheira, Maria Filipa; Bandarra, NarcisaDietary fatty acid supply can affect stress response in fish during early development. Although knowledge on the mechanisms involved in fatty acid regulation of stress tolerance is scarce, it has often been hypothesised that eicosanoid profiles can influence cortisol production. Genomic cortisol actions are mediated by cytosolic receptors which may respond to cellular fatty acid signalling. An experiment was de...