Article
Fisheries
Sean M. Tibbetts, Shane J. J. Patelakis
Summary: The study showed that Pav459 meal from marine microalgae has good potential in low trophic aquafeeds, with high nutritional value including protein and essential fatty acids. The inclusion of 20% Pav459 meal in the diet of Atlantic salmon significantly improved nutrient utilization and may help meet n3 LC PUFA requirements.
Article
Fisheries
Ingrid Schafroth Sandbakken, Kathrine Kjos Five, Tora Bardal, Jarred Lee Knapp, Rolf Erik Olsen
Summary: This study investigated the effect of salmon protein hydrolysate (FPH) on prion infection and the impact of partially replacing fish meal with salmon hydrolysate on the growth, digestibility, and gut health of Atlantic salmon. The results showed that salmon hydrolysate was free from prions and the diets containing hydrolysate improved the growth rate and digestion of salmon without affecting gut health.
Article
Agriculture, Dairy & Animal Science
Vagner S. Ovani, Adibe Luiz Abdalla, Simon Perez Marquez, Wilian dos Santos da Costa, Beatriz Elisa Bizzuti, Paulo de Mello Tavares Lima, Guilherme Dias Moreira, Luciana Gerdes, Helder Louvandini
Summary: Accurate prediction of feed intake is crucial for assessing the feed conversion efficiency of individual grazing animals. This study evaluated the accuracy of three approaches using four internal markers and found that correcting the fecal recovery rate of the markers improved the accuracy of digestibility and intake predictions.
ANIMAL FEED SCIENCE AND TECHNOLOGY
(2022)
Article
Fisheries
B. Hart, R. Schurr, N. Narendranath, A. Kuehnle, S. M. Colombo
Summary: The study demonstrates that whole cell Schizochytrium sp. (Sc) offers a highly digestible (98%) source of PUFAs and protein, without the need for oil extraction or cell disruption.
Article
Biochemical Research Methods
Maksim Zakhartsev, Filip Rotnes, Marie Gulla, Ove Oyas, Jesse C. J. van Dam, Maria Suarez-Diez, Fabian Grammes, Robert Anton Hafthorsson, Wout van Helvoirt, Jasper J. Koehorst, Peter J. Schaap, Yang Jin, Liv Torunn Mydland, Arne B. Gjuvsland, Simen R. Sandve, Vitor A. P. Martins dos Santos, Jon Olav Vik
Summary: SALARECON is a model that links the genome of Atlantic salmon to metabolic fluxes and growth, allowing for the simulation of metabolism and growth. It can be used to explain Atlantic salmon physiology and address key challenges in aquaculture.
PLOS COMPUTATIONAL BIOLOGY
(2022)
Article
Environmental Sciences
Ana S. Gomes, Fabian Zimmermann, Ernst M. Hevroy, Marcus A. L. Soyland, Tom J. Hansen, Tom Ole Nilsen, Ivar Ronnestad
Summary: Precision feeding aims to provide optimal growth and performance for farmed animals while minimizing feed waste. This study examined the relationship between meals, feed deprivation time, and the feed consumed by Atlantic salmon post smolts. The results showed that the time between meals and the size of the previous meal significantly affected the feed intake in the following meal, suggesting the possibility of optimizing meal size.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Fisheries
Andre S. Bogevik, Tor Andreas Samuelsen, Tone Aspevik, Odd Helge Romarheim, Turid Synnove Aas, Tharmini Kalananthan, Ivar Ronnestad
Summary: This study produced two salmon feeds with different disintegration stabilities by changing the lipid levels in the feed mix, followed by feeding trials with Atlantic salmon and an in vitro gastric study. The results showed that feeds with higher lipid content had higher disintegration stability, affecting feed intake.
Article
Biochemistry & Molecular Biology
Peng Yin, Bjorn Thrandur Bjornsson, Per Gunnar Fjelldal, Takaya Saito, Sofie Charlotte Remo, Rolf Brudvik Edvardsen, Tom Hansen, Sandeep Sharma, Rolf Erik Olsen, Kristin Hamre
Summary: Accumulating evidence suggests a close relationship between oxidative stress and growth rate in fish, but the underlying mechanisms are not clear. This study investigated the combined effect of dietary antioxidants and growth hormone (GH) on the redox status of liver and muscle in Atlantic salmon. The results show that GH implantation decreases vitamin C and E levels, increases oxidative stress in the liver, and affects the expression of genes and pathways related to antioxidant enzymes and redox balance. Dietary antioxidants do lower oxidative stress but have no effect on the growth rate.
Article
Biology
Jenni M. Prokkola, Eirik R. Asheim, Sergey Morozov, Paul Bangura, Jaakko Erkinaro, Annukka Ruokolainen, Craig R. Primmer, Tutku Aykanat
Summary: This study reveals the impact of genetic and phenotypic structure on life-history variation, using Atlantic salmon as an ideal model. The research found the association between early maturation genotype with higher metabolic rates and aerobic scope, as well as the physiological epistasis between late maturation genotypes.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Engineering, Marine
Brian G. Sanderson, Richard H. Karsten, Cameron C. Solda, David C. Hardie, Daniel J. Hasselman
Summary: This study uses acoustic telemetry to quantify the probability of encounters between salmon and marine hydrokinetic (MHK) turbines in Minas Passage, Bay of Fundy.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Agriculture, Dairy & Animal Science
H. Cheng, Y. Guo, S. J. Hojberg, K. M. Zatti, A. H. Feyissa
Summary: An empirical model was used to quantitatively analyze the effects of extrusion variables and recipe compositions on the quality of feed pellets. The model was compared with the results obtained from lab extrusion trials and a Response Surface Method (RSM). The empirical model showed better performance in predicting the effects of extrusion variables on pellet quality parameters. The study demonstrates the practical engineering applications of the empirical model for understanding extrusion trial results in different systems and recipes.
ANIMAL FEED SCIENCE AND TECHNOLOGY
(2023)
Article
Fisheries
Enrique Pino Martinez, Pablo Balseiro, Sigurd O. Stefansson, Nobuto Kaneko, Birgitta Norberg, Mitchell S. Fleming, Albert K. D. Imsland, Sigurd O. Handeland
Summary: Early maturation of Atlantic salmon male postsmolts has negative effects on growth and adaptation in aquaculture. This study found that temperature and feeding ration significantly influenced sexual maturation in salmon, with higher temperatures and feeding rations leading to more early maturation.
Article
Food Science & Technology
Eivind Molversmyr, Hanne Marie Devle, Carl Fredrik Naess-Andresen, Dag Ekeberg
Summary: The fatty acid profiles of wild and farmed Atlantic salmon and salmon feed were analyzed and compared. The muscle of farmed salmon contained four times more fat than wild salmon, and the fatty acid composition differed between the two. The overall nutritional profile was found to be more beneficial in wild Atlantic salmon.
FOOD SCIENCE & NUTRITION
(2022)
Article
Fisheries
Jordan E. Elvy, Jane E. Symonds, Zoe Hilton, Seumas P. Walker, Louis A. Tremblay, Paula Casanovas, Neill A. Herbert
Summary: The feed conversion ratio (FCR) is important for reducing feed costs and environmental impacts. This study examined the correlation between FCR and physiological traits in farmed saltwater Chinook salmon. The results showed that high DWG and low DFI were strongly correlated with FCR efficiency.
Article
Biochemistry & Molecular Biology
M. P. Thorndyke, O. Guimaraes, N. M. Tillquist, J. T. Zervoudakis, T. E. Engle
Summary: The study found that molybdenum intake in water has less impact on copper absorption and retention, compared to molybdenum supplemented in the diet. Steers supplemented with molybdenum in feed and water showed similar levels of copper absorption and retention.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2021)