• 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)
    • 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 ...