Blar i NOFIMA vitenarkiv på forfatter "Difford, Gareth Frank"
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Evaluation of a recirculating aquaculture system research facility designed to address current knowledge needs in Atlantic salmon production
Mota, Vasco; Striberny, Anja; Verstege, Gerhardus C.; Difford, Gareth Frank; Lazado, Carlo C. (Peer reviewed; Journal article, 2022)A better understanding of recirculating aquaculture systems (RAS) biosecurity is crucial for a sustainable and ethical production of Atlantic salmon smolt and post-smolt in these systems. This study described and evaluated ... -
Genome-wide association study for methane emission traits in Danish Holstein cattle
Manzanilla-Pech, C.I.V.; Difford, Gareth Frank; Sahana, G.; Romé, H.; Løvendahl, Peter; Lassen, J. (Peer reviewed; Journal article, 2022)Selecting for lower methane emitting cows requires insight into the most biologically relevant phenotypes for methane emission, which are close to the breeding goal. Several methane phenotypes have been suggested over the ... -
Genomic and Phenotypic Agreement Defines the Use of Microwave Dielectric Spectroscopy for Recording Muscle Lipid Content in European Seabass (Dicentrarchus labrax)
Difford, Gareth Frank; Díaz-Gil, Carlos; Sánchez-Moya, Albert; Aslam, Muhammad Luqman; Horn, Siri Storteig; Ruyter, Bente Synnøve; Herlin, Marine; Lopez, Marilo; Sonesson, Anna Kristina (Peer reviewed; Journal article, 2021)Recording the fillet lipid percentage in European seabass is crucial to control lipid deposition as a means toward improving production efficiency and product quality. The reference method for recording lipid content is ... -
Multitrait genomic prediction of methane emissions in Danish Holstein cattle
Manzanilla-Pech, Coralia Ines V.; Gordo, D.; Difford, Gareth Frank; Løvendahl, Peter; Lassen, Jan (Peer reviewed; Journal article, 2020) -
Phenotypic modeling of residual feed intake using physical activity and methane production as energy sinks
Olijhoek, Dana W.; Difford, Gareth Frank; Lund, Peter; Løvendahl, Peter (Peer reviewed; Journal article, 2020)Residual feed intake (RFI) is a measure of feed efficiency in dairy cattle. This study modeled phenotypic RFI of first- and second-parity Holstein and Jersey dairy cows within 9 lactation segments (consecutive segments of ... -
Predictive ability of host genetics and rumen microbiome for subclinical ketosis
Gebreyesus, Grum; Difford, Gareth Frank; Buitenhuis, Bart; Lassen, Jan; Noel, Samantha Joan; Højberg, Ole; Plichta, Damian R.; Zhu, Zhigang; Poulsen, Nina A.; Sundekilde, Ulrik K.; Løvendahl, Peter; Sahana, Goutam (Peer reviewed; Journal article, 2020)Subclinical metabolic disorders such as ketosis cause substantial economic losses for dairy farmers in addition to the serious welfare issues they pose for dairy cows. Major hurdles in genetic improvement against metabolic ... -
Quantitative Genetics of Smoltification Status at the Time of Seawater Transfer in Atlantic Salmon (Salmo Salar)
Khaw, Hooi Ling; Gjerde, Bjarne; Boison, Solomon Antwi; Hjelle, Elise; Difford, Gareth Frank (Peer reviewed; Journal article, 2021) -
Review: Genetic and genomic selection as a methane mitigation strategy in dairy cattle
Lassen, Jan; Difford, Gareth Frank (Peer reviewed; Journal article, 2020) -
The heritable landscape of Near Infrared and Raman spectroscopic measurements to improve lipid content in Atlantic salmon fillets.
Difford, Gareth Frank; Horn, Siri Storteig; Dankel, Elin Katinka; Ruyter, Bente; Dagnachew, Binyam Sime; Hillestad, Borghild; Sonesson, Anna Kristina; Afseth, Nils Kristian (Peer reviewed; Journal article, 2021) -
Validating non-invasive growth measurements on individual Atlantic salmon in sea cages using diode frames
Difford, Gareth Frank; Boison, Solomon Antwi; Khaw, Hooi Ling; Gjerde, Bjarne (Peer reviewed; Journal article, 2020)Most Atlantic salmon production takes place in large sea cages where there are limited opportunities to record growth on individual fish. This limits management capabilities for monitoring mean weight and thus total biomass, ... -
Variation in volatile organic compounds in Atlantic salmon mucus is associated with resistance to salmon lice infection
Difford, Gareth Frank; Haugen, John-Erik; Aslam, Muhammad Luqman; Johansen, Lill-Heidi; Breiland, Mette Serine Wesmajervi; Hillestad, B.; Baranski, Matthew; Boison, Solomon Antwi; Moghadam, Hooman; Jacq, Celeste (Peer reviewed; Journal article, 2022)Salmon lice are ectoparasites that threaten wild and farmed salmonids. Artificial selection of salmon for resistance to the infectious copepodid lice stage currently relies on in vivo challenge trials on thousands of salmon ...