Browsing Brage INN by Author "Kommisrud, Elisabeth"
Now showing items 1-17 of 17
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Associations between insulin-like factor 3, scrotal circumference and semen characteristics in young Norwegian Red bulls
Bremer, Joanna; Heringstad, Bjørg; Morrell, Jane M.; Kommisrud, Elisabeth (Peer reviewed; Journal article, 2023)With the integration of genomic selection in the cattle artificial insemination (AI) industry, bulls are selected for their semen production capacity and fertility at a younger age than previously. Norwegian Red bull calves ... -
Cumulus Cell and Oocyte Gene Expression in Prepubertal Gilts and Sows Identifies Cumulus Cells as a Prime Informative Parameter of Oocyte Quality
Haug, Linda Marijke Dekker; Wilson, Robert Charles; Gaustad, Ann Helen; Jochems, Reina; Kommisrud, Elisabeth; Grindflek, Eli; Alm-Kristiansen, Anne Hege (Peer reviewed; Journal article, 2023)Cumulus cells (CCs) are pivotal during oocyte development. This study aimed to identify novel marker genes for porcine oocyte quality by examining the expression of selected genes in CCs and oocytes, employing the model ... -
Deep learning–based automated measurements of the scrotal circumference of Norwegian Red bulls from 3D images
Bremer, Joanna; Maj, Michal; Nordbø, Øyvind; Kommisrud, Elisabeth (Peer reviewed; Journal article, 2023)The main aim of this study was to create an automated method for the measurement of the scrotal circumference (SC) of Norwegian Red bulls using 3D images of the scrotum based on convolutional neural networks. The study ... -
Differences in sperm functionality and intracellular metabolites in Norwegian Red bulls of contrasting fertility
Narud, Birgitte; Klinkenberg, Geir; Khezri, Abdolrahman; Zeremichael, Teklu Tewoldebrhan; Stenseth, Else-Berit; Nordborg, Anna; Haukaas, Tonje Husby; Morrell, Jane; Heringstad, Bjørg; Myromslien, Frøydis Deinboll; Kommisrud, Elisabeth (Peer reviewed; Journal article, 2020-07-22)In the dairy breeding industry, prediction of bull fertility in artificial insemination (AI) is important for efficient and economically sustainable production. However, it is challenging to identify bulls with superior ... -
DNA methylation patterns vary in boar sperm cells with different levels of DNA fragmentation
Narud, Birgitte; Stenseth, Else-Berit; Johannisson, Anders; Myromslien, Frøydis Deinboll; Gaustad, Ann Helen; Wilson, Robert Charles; Lyle, Robert; Morrell, Jane; Kommisrud, Elisabeth; Ahmad, Rafi (Peer reviewed; Journal article, 2019) -
Effect of two 'progressively motile sperm-oocyte' ratios on porcine in vitro fertilization and embryo development
Jochems, Reina; Gaustad, Ann Helen; Zak, Louisa J.; Grindflek, Eli; Zeremichael, Teklu Tewoldebrhan; Oskam, Irma Caroline; Myromslien, Frøydis Deinboll; Kommisrud, Elisabeth; Krogenæs, Anette Kristine (Peer reviewed; Journal article, 2022)Sperm motility and viability of cryopreserved semen vary between boars and straws, which influences the outcomes of in vitro embryo production (IVEP). However, progressive motility is usually not considered during IVEP. ... -
Follicular fluid steroid hormones and in vitro embryo development in Duroc and Landrace pigs
Jochems, Reina; Gaustad, Ann Helen; Styrishave, Bjarne; Zak, Louisa J.; Oskam, Irma Caroline; Grindflek, Eli; Myromslien, Frøydis Deinboll; Kommisrud, Elisabeth; Krogenæs, Anette Kristine (Peer reviewed; Journal article, 2022)The Duroc sire line has a smaller litter size compared to the Landrace dam line and we have previously observed fewer surface follicles on Duroc ovaries one day after weaning. In that same study, a broader cumulus expansion ... -
Novel interpretation of sperm stress test and morphology for maturity assessment of young Norwegian Red bulls
Bremer, Joanna; Heringstad, Bjørg; Morrell, Jane M.; Kommisrud, Elisabeth (Peer reviewed; Journal article, 2023)The use of genomic selection significantly reduces the age of dairy bulls entering semen production compared to progeny testing. The study aimed to identify early indicators that could be used for screening bulls during ... -
Ovarian characteristics and in vitro nuclear and cytoplasmic oocyte maturation in Duroc and Landrace pigs
Jochems, Reina; Gaustad, Ann Helen; Zak, Louisa J.; Grindflek, Eli; Zeremichael, Teklu Tewoldebrhan; Oskam, Irma Caroline; Myromslien, Frøydis Deinboll; Kommisrud, Elisabeth; Krogenæs, Anette Kristine (Peer reviewed; Journal article, 2021)Differences in total number of piglets born per litter are observed between the Norwegian Duroc (ND) sire and Norwegian Landrace (NL) dam line. The aim of this study was to evaluate ovarian characteristics, and in vitro ... -
Ovarian Follicular Response to Oestrous Synchronisation and Induction of Ovulation in Norwegian Red Cattle
Berg, Halldor Felde; Heringstad, Bjørg; Alm-Kristiansen, Anne Hege; Kvale, Vilde Granne; Dragset, Knut Ingolf; Waldmann, Andres; Ropstad, Erik; Kommisrud, Elisabeth (Peer reviewed; Journal article, 2020)Oestrous synchronisation of cattle has been widely applied to accomplish simultaneous ovulation in animals and facilitate timed artificial insemination. The main aim of this study was to investigate the ovarian follicular ... -
Pilot study investigating estrus length and estrus behavior in Norwegian Red cattle on a commercial dairy farm
Munthe-Kaas, Maien; Sveberg, Guro; Holmøy, Ingrid Hunter; Kommisrud, Elisabeth; Haadem, Caroline Sorknes; Martin, Adam Dunstan (Peer reviewed; Journal article, 2023)Introduction: Norwegian Red has been shown to have high levels of estrus behavior under experimental conditions. However, the estrus behaviors of Norwegian Red cows have not been studied under commercial conditions. Methods: ... -
Semen quality parameters including metabolites, sperm production traits and fertility in young Norwegian Red AI bulls
Narud, Birgitte; Khezri, Abdolrahman; Nordborg, Anna; Klinkenberg, Geir; Zeremichael, Teklu Tewoldebrhan; Stenseth, Else-Berit; Heringstad, Bjørg; Kommisrud, Elisabeth; Myromslien, Frøydis Deinboll (Peer reviewed; Journal article, 2022)Genomic selection in cattle breeding has gradually allowed younger bulls to be recruited for semen production. In this study, sperm quality parameters, seminal plasma and sperm metabolites, semen production capacity and ... -
Sperm chromatin integrity and DNA methylation in Norwegian Red bulls of contrasting fertility
Narud, Birgitte; Khezri, Abdolrahman; Zeremichael, Teklu Tewoldebrhan; Stenseth, Else-Berit; Heringstad, Bjørg; Johannisson, Anders; Morrell, Jane; Collas, Philippe; Myromslien, Frøydis Deinboll; Kommisrud, Elisabeth (Peer reviewed; Journal article, 2021)n this study, the complexity of chromatin integrity was investigated in frozen-thawed semen samples from 37 sires with contrasting fertility, expressed as 56-day non-return rates (NR56). Protamine deficiency, thiols, and ... -
Sperm DNA Hypomethylation Proximal to Reproduction Pathway Genes in Maturing Elite Norwegian Red Bulls
Khezri, Abdolrahman; Narud, Birgitte; Stenseth, Else-Berit; Zeremichael, Teklu Tewoldebrhan; Myromslien, Frøydis Deinboll; Robert C., Wilson; Ahmad, Rafi; Kommisrud, Elisabeth (Peer reviewed; Journal article, 2020)Genomic selection in modern farming demands sufficient semen production in young bulls. Factors affecting semen quality and production capacity in young bulls are not well understood; DNA methylation, a complicated phenomenon ... -
Sperm quality, semen production, and fertility in young Norwegian Red bulls
Bremer, Joanna (Ph.d.-avhandling i anvendt økologi og bioteknologi;34, Doctoral thesis, 2023)Ved bruk av genomisk seleksjon i storfeavlen blir eliteokser selektert basert på deres estimerte genomiske avlsverdier i stedet for ved avkomsgransking. Oksene er derfor yngre når de blir tatt i bruk i sædproduksjon enn ... -
Stress resilience of spermatozoa and blood mononuclear cells without prion protein
Reiten, Malin Rokseth; Malachin, Giulia; Kommisrud, Elisabeth; Østby, Gunn Charlotte; Waterhouse, Karin Elisabeth; Krogenæs, Anette Kristine; Kusnierczyk, Anna; Bjørås, Magnar; Jalland, Clara Maria Osnes; Nekså, Liv Heidi; Røed, Susan Skogtvedt; Stenseth, Else-Berit; Myromslien, Frøydis Deinboll; Zeremichael, Teklu Tewoldebrhan; Bakkebø, Maren Kolltveit; Espenes, Arild; Tranulis, Michael A. (Peer reviewed; Journal article, 2018) -
Viability, motility, ATP content and fertilizing potential of sperm from Atlantic salmon (Salmo salar L.) in milt stored before cryopreservation
Kommisrud, Elisabeth; Myromslien, Frøydis Deinboll; Stenseth, Else-Berit; Zeremichael, Teklu Tewoldebrhan; Hofman, Nadine; Grevle, Inger Synnøve; Sunde, Jan (Peer reviewed; Journal article, 2020)Artificial fertilization is increasingly used in aquaculture, mostly applying short-term cold stored milt. Large scale cryopreservation of milt could be valuable for increased flexibility and acceleration of breeding ...