Blar i Department of Biological Sciences på forfatter "Espe, Marit"
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Amino Acid Carriers of the Solute Carrier Families 7 (SLC7) and 38 (SLC38) Are Involved in Leucine Sensing in the Brain of Atlantic Salmon (Salmo salar)
Comesaña, Sara; Lai, Floriana; Jordal, Ann-Elise Olderbakk; Verri, Tiziano; Espe, Marit; Soengas, José L.; Rønnestad, Ivar (Journal article; Peer reviewed, 2021)Sensing of amino acids in fish brain, especially branched-chain amino acids (BCAA) like leucine, is involved in regulation of feed intake through different mechanisms. However, there is limited information regarding the ... -
Anorectic role of high dietary leucine in farmed Atlantic salmon (Salmo salar L.): Effects on feed intake, growth, amino acid transporters and appetite-control neuropeptides
Lai, Floriana; Comesaña, Sara; Gomes, Ana S.; Flatejord, Daniel; Tolås, Ingvill; Espe, Marit; De Santis, Christian; Hartviksen, Mali B.; Verri, Tiziano; Soengas, Jose L.; Rønnestad, Ivar (Journal article; Peer reviewed, 2023)Leucine has been identified to modulate feed intake and energy homeostasis in fish as in other vertebrates. Under allostatic conditions, energy expenditure may change, and adjustments to the processes that govern the energy ... -
Dietary selenium required to achieve body homeostasis and attenuate pro-inflammatory responses in Atlantic salmon post-smolt exceeds the present EU legal limit
Prabhu, P. Antony Jesu; Holen, Elisabeth; Espe, Marit; Silva, Marta Sofia; Holme, May-Helen; Hamre, Kristin; Lock, Erik-Jan; Waagbø, Rune (Journal article; Peer reviewed, 2020)Selenium (Se) supplementation either as inorganic or organic form was evaluated in Atlantic salmon post-smolt in vivo and in vitro. The basal diet was formulated to be low in fish meal and contain 0.24 mg Se kg−1; six other ... -
Effect of increased rearing temperature on digestive function in cobia early juvenile
Yufera, Manuel; Nguyen, MV; Navarro-Guillén, Carmen; Moyano, Francisco Javier; Jordal, Ann-Elise Olderbakk; Espe, Marit; Conceicao, LEC; Engrola, Sofia; Le, MH; Rønnestad, Ivar (Peer reviewed; Journal article, 2019)The present study is focused to elucidate the main characteristics of the digestive function of this carnivorous fast-growing fish living at high temperatures. With this aim, we have examined the effects of an increased ... -
Elevated sea temperature combined with dietary methionine levels affect feed intake and appetite-related neuropeptide expression in the brains of juvenile cobia (Rachycentron canadum)
Nguyen, Minh; Pham, Phuong Linh; Jordal, Ann-Elise Olderbakk; Espe, Marit; Conceição, L.E.C.; Yúfera, M.; Engrola, S.; Le, M.H.; Rønnestad, Ivar (Journal article; Peer reviewed, 2023-07-04)This study aimed to determine the impact of elevated temperature combined with different levels of dietary methionine concentrations on feed intake (FI) and brain expression of selected neuropeptides and one receptor ... -
Leucine did not stimulate growth and accretion in either stressed or unstressed Atlantic salmon
Espe, Marit; Lai, Floriana; Gomes, Ana S.; De Santis, Christian; Hartviksen, Mali B.; Holen, Elisabeth; Rønnestad, Ivar (Journal article; Peer reviewed, 2021)The aim of the current trial was to test whether leucine affected growth and accretion including test any effects on leucine upon stress. Quadruplicate tanks each containing 50 Atlantic salmon (Salmo salar) (mean start ... -
Methionine deficiency does not increase polyamine turnover through depletion of hepatic S-adenosylmethionine in juvenile Atlantic salmon
Espe, Marit; Andersen, Synne Marte; Holen, Elisabeth; Rønnestad, Ivar; Veiseth-Kent, Eva; Zerrahn, Jens-Erik; Aksnes, Anders (Peer reviewed; Journal article, 2014-10)During the last few decades, plant protein ingredients such as soya proteins have replaced fishmeal in the diets of aquacultured species. This may affect the requirement and metabolism of methionine as soya contains less ... -
The role of dietary methionine concentrations on growth, metabolism and N-retention in cobia (Rachycentron canadum) at elevated water temperatures
Nguyen, Minh Van; Espe, Marit; Conceição, Louis E.C.; Le, Hoang Minh; Yúfera, Manuel; Engrola, Sofia A.D.; Jordal, Ann-Elise Olderbakk; Rønnestad, Ivar (Peer reviewed; Journal article, 2019-04)This study determined impacts of dietary methionine concentrations at two temperatures on growth, feeding efficiency and N‐metabolites in juvenile cobia. Methionine concentrations of the experimental diets were deficient ... -
The stress response in Atlantic salmon (Salmo salar L.): identification and functional characterization of the corticotropin-releasing factor (crf) paralogs
Lai, Floriana; Royan, Muhammad Rahmad; Gomes, Ana S.; Espe, Marit; Aksnes, Anders; Norberg, Birgitta; Gelebart, Virginie; Rønnestad, Ivar (Journal article; Peer reviewed, 2021)Corticotropin-Releasing Factor (CRF) is one of the main mediators of the Hypothalamic-Pituitary–Interrenal (HPI) axis to stress response. In Atlantic salmon, a comparative understanding of the crf1 paralogs role in the ...