Browsing Bergen Open Research Archive by Author "Silva, Marta Sofia"
Now showing items 1-14 of 14
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Apparent availability of zinc, selenium and manganese as inorganic metal salts or organic forms in plant-based diets for Atlantic salmon (Salmo salar)
Silva, Marta Sofia; Kröckel, Saskia; Prabhu, Antony; Koppe, Wolfgang; Ørnsrud, Robin; Waagbø, Rune; Araujo, Pedro; Amlund, Heidi (Peer reviewed; Journal article, 2019-03)The composition of salmonid diets has changed from the use of mainly marine ingredients to increased use of plant ingredients, and this has an impact on the mineral content and availability. Minerals, like zinc (Zn), ... -
Arsenic speciation and arsenic feed-to-fish transfer in Atlantic salmon fed marine low trophic feeds based blue mussel and kelp
Silva, Marta Sofia; Tibon, Jojo; Sartipiyarahmadi, Sahar; Remø, Sofie C.; Sele, Veronika; Søfteland, Liv Ingeborg Rosvoll; Sveier, Harald; Wiech, Martin; Philip, Antony Jesu Prabhu; Berntssen, Marc HG (Journal article; Peer reviewed, 2023)Background: Aquaculture aims to reduce the environmental and climate footprints of feed production. Consequently, low trophic marine (LTM) resources such as blue mussels and kelp are potential candidates to be used as ... -
Assessing amino acid solubility of black soldier fly larvae meal in Atlantic salmon (Salmo salar) in vivo and in vitro
Radhakrishnan, Gopika; Silva, Marta Sofia; Lock, Erik Jan Robert; Belghit, Ikram; Philip, Antony Jesu Prabhu (Journal article; Peer reviewed, 2022)In vitro and in vivo methods were used to evaluate amino acids solubility of black soldier fly (BSF) larvae meal and two experimental diets (reference and test diets) for Atlantic salmon. The current study used in vitro ... -
Assessing mineral availability in fish feeds using complementary methods demonstrated with the example of zinc in atlantic salmon
Silva, Marta Sofia; Stewart, Thea; Amlund, Heidi; Sloth, Jens Jørgen; Araujo, Pedro; Lock, Erik Jan Robert; Hogstrand, Christer; Ørnsrud, Robin; Waagbø, Rune; Prabhu, P. Antony Jesu (Journal article; Peer reviewed, 2021)Assessing the availability of dietary micro-minerals is a major challenge in mineral nutrition of fish species. The present article aims to describe a systematic approach combining different methodologies to assess the ... -
Development of novel methods to evaluate availability of zinc, selenium and manganese in Atlantic salmon (Salmo salar)
Silva, Marta Sofia (Doctoral thesis, 2019-06-06)During the recent years, the composition of salmonids diets has changed from the use of mainly marine-based ingredients (e.g. fish meal and fish oil) to an increased use of plant-based ingredients (e.g. soybean meal and ... -
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 ... -
Dietary zinc, selenium and water temperature during early seawater phase influences the development of vertebral deformities and cataract in adult Atlantic salmon
Philip, Antony Jesu Prabhu; Fjelldal, Per Gunnar; Remø, Sofie C.; Silva, Marta Sofia; Holme, May-Helen; Lock, Erik Jan Robert; Waagbø, Rune (Journal article; Peer reviewed, 2023)The impact of dietary trace minerals (TM; zinc and selenium) and water temperature during early seawater phase on the development of vertebral deformities and cataracts in adult Atlantic salmon was studied. Two experimental ... -
Does the processing of black soldier fly larvae meal affect the amino acid solubility in Atlantic salmon (Salmo salar)?
Radhakrishnan, Gopika; Silva, Marta Sofia; Liland, Nina Sylvia; Secci, R.; Araujo, Pedro; Philip, Antony Jesu Prabhu; Belghit, Ikram (Journal article; Peer reviewed, 2024)The present work aimed to evaluate protein and amino acid (AA) digestibility/solubility of different black soldier fly larvae (BSFL) based meals for Atlantic salmon in vivo and in vitro. Three types of insect meals that ... -
Effect of levels and sources of dietary manganese on growth and mineral composition of post-smolt Atlantic salmon fed low fish meal, plant-based ingredient diets
Phillip, Antony Jesu Prabhu; Silva, Marta Sofia; Kröeckel, Saskia; Holme, May-Helen; Ørnsrud, Robin; Amlund, Heidi; Lock, Erik-Jan; Waagbø, Rune (Peer reviewed; Journal article, 2019-10-15)The impact of dietary manganese (Mn) levels and sources on the growth and mineral composition of post-smolt Atlantic salmon (Salmo salar) fed practical diets was studied. Seven experimental diets were prepared with graded ... -
Hypothalamic agrp and pomc mRNA Responses to Gastrointestinal Fullness and Fasting in Atlantic Salmon (Salmo salar, L.)
Kalananthan, Tharmini; Murashita, Koji; Rønnestad, Ivar; Ishigaki, Mitsumasa; Takahashi, Kota; Silva, Marta Sofia; Wakabayashi, Yuki; Lai, Floriana; Shimizu, Munetaka; Nilsen, Tom Ole; Martinez, Enrique Pino; Gomes, Ana S. (Journal article; Peer reviewed, 2020-02-11)The orexigenic agouti-related protein (AgRP) and the anorexigenic pro-opiomelanocortin (POMC) are crucial players in the control of feed intake in vertebrates, yet their role in teleosts has not been fully established. ... -
In vitro assessment of protein digestibility and mineral solubility of black soldier fly larvae meals for monogastric animals
Silva, Marta Sofia; Matos, Rita; Araujo, Pedro; Lock, Erik Jan Robert; Radhakrishnan, Gopika; Prabhu, P. Antony Jesu; Belghit, Ikram (Journal article; Peer reviewed, 2022)Animal farming is a fast-growing sector which demands a large supply of feed materials and the search for novel feed ingredients with a smaller impact on the global environment has been intensified. However, before the ... -
In vitro digestion method to evaluate solubility of dietary zinc, selenium and manganese in salmonid diets
Silva, Marta Sofia; Antony Jesu Prabhu, Antony Jesu Prabhu; Ørnsrud, Robin; Sele, Veronika; Kröckel, Saskia; Sloth, Jens Jørgen; Amlund, Heidi (Journal article; Peer reviewed, 2020)Background The determination of dietary mineral solubility is one of the main steps in the evaluation of their availability for a given species. Methods This study proposed an in vitro digestion method (acidic and ... -
Speciation of zinc in fish feed by size exclusion chromatography coupled to inductively coupled plasma mass spectrometry – using fractional factorial design for method optimisation and mild extraction conditions
Silva, Marta Sofia; Sele, Veronika; Sloth, Jens Jørgen; Araujo, Pedro; Amlund, Heidi (Peer reviewed; Journal article, 2019-01)Zinc (Zn) is an element essential to all living organisms and it has an important role as a cofactor of several enzymes. In fish, Zn deficiency has been associated with impaired growth, cataracts, skeletal abnormalities ... -
Zinc uptake in fish intestinal epithelial model RTgutGC: Impact of media ion composition and methionine chelation
Prabhu, Antony; Stewart, Theodora; Silva, Marta Sofia; Amlund, Heidi; Ørnsrud, Robin; Lock, Erik-Jan; Waagbø, Rune; Hogstrand, Christer (Peer reviewed; Journal article, 2018-12)Apical uptake of zinc as ionic Zn(II) or as Zn-methionine (Zn-Met) was studied in RTgutGC cell line in vitro under media compositions mirroring the gut luminal ionic concentration of freshwater (FW) and seawater (SW) ...