Browsing Artikler, rapporter, filmer / Articles, reports, movies by Author "Zeremichael, Teklu Tewoldebrhan"
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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 ... -
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. ... -
Lipid droplet distribution in Atlantic salmon (Salmo salar L.) oocytes is related to the fertilisation and developmental outcome
Kaththriarachchi, Sonali Nadeeshani; Kommisrud, Elisabeth; Myromslien, Frøydis Deinboll; Zeremichael, Teklu Tewoldebrhan; Grevle, Inger Synnøve; Santana, João; Farkas, Julia; Hansen, Bjørn Henrik; Wielogórska, Ewa; Narud, Birgitte (Peer reviewed; Journal article, 2024)At present, there is no simple and practical applicable method to determine the quality of Atlantic salmon oocytes upon collection at the fish farm. Investigating oocyte lipid droplet patterns might be a tool for the ... -
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 ... -
Relationship between sperm motility characteristics and ATP concentrations, and association with fertility in two different pig breeds
Tremoen, Nina Hårdnes; Gaustad, Ann Helen; Andersen-Ranberg, Ina; van Son, Maren; Zeremichael, Teklu Tewoldebrhan; Frydenlund, Kirsten; Grindflek, Eli; Våge, Dag Inge; Myromslien, Frøydis Deinboll (Journal article; Peer reviewed, 2018) -
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 DNA integrity in Landrace and Duroc boar semen and its relationship to litter size
Myromslien, Frøydis Deinboll; Tremoen, Nina Hårdnes; Andersen-Ranberg, Ina; Fransplass, Ragnhild; Stenseth, Else-Berit; Zeremichael, Teklu Tewoldebrhan; van Son, Maren; Grindflekk, Eli; Gaustad, Ann Helen (Journal article; Peer reviewed, 2018) -
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) -
Transcriptome profiling of porcine testistissue reveals genes related to spermhyperactive motility
van Son, Maren; Tremoen, Nina Hårdnes; Gaustad, Ann Helen; Våge, Dag Inge; Zeremichael, Teklu Tewoldebrhan; Myromslien, Frøydis Deinboll; Grindflek, Eli (Peer reviewed; Journal article, 2020)Sperm hyperactive motility has previously been shown to influence litter size in pigs, but little is known about the underlying biological mechanisms. The aim of this study was to use RNA sequencing to investigate gene ... -
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 ...