Browsing Brage INN by Author "Gaustad, Ann Helen"
Now showing items 1-10 of 10
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Association between single-nucleotide polymorphisms within candidate genes and fertility in Landrace and Duroc pigs
Tremoen, Nina Hårdnes; van Son, Maren; Andersen-Ranberg, Ina; Grindflek, Eli; Myromslien, Frøydis Deinboll; Gaustad, Ann Helen; Våge, Dag Inge (Peer reviewed; Journal article, 2019)Finding effective predictors of traits related to boar fertility is essential for increasing the efficiency of artificial insemi‑nation systems in pig breeding. The objective of this study was to find associations between ... -
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 ... -
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 ... -
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) -
RNA sequencing reveals candidate genes and polymorphisms related to sperm DNA integrity in testis tissue from boars
van Son, Maren; Tremoen, Nina Hårdnes; Gaustad, Ann Helen; Myromslien, Frøydis Deinboll; Våge, Dag Inge; Stenseth, Else-Berit; Zeremichael, Teklu Tewolderbrhan; Grindflek, Eli (Journal article; Peer reviewed, 2017)Background: Sperm DNA is protected against fragmentation by a high degree of chromatin packaging. It has been demonstrated that proper chromatin packaging is important for boar fertility outcome. However, little is known ... -
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) -
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 ...