Browsing Brage NMBU by Author "Heringstad, Bjørg"
Now showing items 1-20 of 52
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A comparison of principal component regression and genomic REML for genomic prediction across populations
Dadousis, Christos; Veerkamp, Roel F; Heringstad, Bjørg; Pszczola, Marcin; Calus, Mario P.L (Journal article; Peer reviewed, 2014) -
A genetic study of new udder health indicator traits with data from automatic milking systems
Wethal, Karoline Bakke; Svendsen, Morten; Heringstad, Bjørg (Peer reviewed; Journal article, 2020) -
Alternative subclinical mastitis traits for genetic evaluation in dairy cattle
Kirsanova, Elena; Heringstad, Bjørg; Lewandowska-Sabat, Anna; Olsaker, Ingrid (Journal article; Peer reviewed, 2019) -
Are farmer assessed temperament, milking speed, and leakage genetically the same traits in automatic milking systems and traditional milking systems?
Wethal, Karoline Bakke; Svendsen, Morten; Heringstad, Bjørg (Peer reviewed; Journal article, 2020) -
Arvbarhet og avlsverdier for metanproduksjon hos unge okser av Norsk Rødt Fe (NRF), med målinger i GreenFeed
Hamfjord, Ida Wøyen (Master thesis, 2022)Fokuset rundt klimagasser og forurensning har økt de siste tiårene, og drøvtyggerne har blitt stemplet som miljøverstinger. Avl er en måte å redusere klimaavtrykket fra drøvtyggere, men for å kunne gjøre dette må egenskapen ... -
Arvegrader og estimerte avlsverdier for hanndyrfruktbarhet hos Norsk Rødt Fe
Eftang, Silje Gunhild (Master thesis, 2017)Norsk Rødt Fe er kjent for sitt brede avlsmål over tid som i dag har gjort rasen kjent for god helse og god fruktbarhet, også på verdensbasis. Hunndyrfruktbarhet har vært en viktig del av avlsarbeidet siden slutten av ... -
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 (Journal article; Peer reviewed, 2023) -
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) -
Comparison of production and health status of purebred Holstein and Norwegian Red x Holstein crosses in the UK
Wibe, Anne Gladsø (Master thesis, 2022)The goal of this thesis was to compare performance of purebred Holstein cows, Holstein crossed with Norwegian Red (NR) and various crossbreed combinations that included NR, by comparing their milk traits (kg. milk, fat ... -
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)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 ... -
Effekt av AH1 på dødfødsler og tidlig utrangering av kalv hos NRF
Storlien, Hanna (Master thesis, 2018)Genet AH1 ble oppdaget i 2014 på Canadisk Ayrshire og studien viste at dersom begge foreldre er bærere av AH1 kan det medføre dødfødsel. Formålet med denne studien var å undersøke om AH1 har negativ effekt på kalvingsegenskapene ... -
Estimering av arvegrad og avlsverdier på en ny adferdsegenskap, tillitsfull, hos Norsk Rødt Fe (NRF)
Grøthe, Karoline (Master thesis, 2024)Bevissthet rundt velferden til produksjonsdyr øker i befolkningen, og gjør at forbrukere stiller strengere krav til dyrevelferd. Avl kan bidra til å forbedre dyrevelferd i form av dyrets genetiske potensiale for god helse ... -
Expression analysis of candidate genes for chronic subclinical mastitis in Norwegian Red cattle
Kirsanova, Elena; Boysen, Preben; Johansen, Grethe Marie; Heringstad, Bjørg; Lewandowska-Sabat, Anna; Olsaker, Ingrid (Peer reviewed; Journal article, 2020)Chronic subclinical mastitis (SCM) is characterized by a long-term inflammation in the udder with high somatic cell count (SCC) in milk. Previously, several novel alternative SCM traits for Norwegian Red (NR) cattle have ... -
Expression analysis of candidate genes for chronic subclinical mastitis in Norwegian Red cattle
Kirsanova, Elena; Boysen, Preben; Johansen, Grethe Marie; Heringstad, Bjørg; Lewandowska-Sabat, Anna; Olsaker, Ingrid (Peer reviewed; Journal article, 2020)Chronic subclinical mastitis (SCM) is characterize by a long-term inflammation in the udder with highsomatic cell count (SCC) in milk. Previously, several novel alternative SCM traits for Norwegian Red (NR) cattle have ... -
Factors associated with milking-to-milking variability in somatic cell counts from healthy cows in an automatic milking system
Nørstebø, Håvard; Dalen, Gunnar; Rachah, Amira; Heringstad, Bjørg; Whist, Anne Cathrine; Nødtvedt, Ane C. W.; Reksen, Olav (Journal article; Peer reviewed, 2019)Fully automated on-line analysis equipment is available for analysis of somatic cell count (SCC) at every milking in automatic milking systems. In addition to results from on-line cell counters (OCC), an array of additional ... -
Fine mapping of a QTL on bovine chromosome 6 using imputed full sequence data suggests a key role for the group-specific component (GC) gene in clinical mastitis and milk production
Olsen, Hanne Gro; Knutsen, Tim; Lewandowska-Sabat, Anna; Grove, Harald; Nome, Torfinn; Svendsen, Morten; Arnyasi, Mariann; Sodeland, Marte; Sundsaasen, Kristil Kindem; Dahl, Sandra Rinne; Heringstad, Bjørg; Hansen, Hanne Hellerud; Olsaker, Ingrid; Kent, Matthew Peter; Lien, Sigbjørn (Journal article; Peer reviewed, 2016) -
Fine mapping of a QTL on bovine chromosome 6 using imputed full sequence data suggests a key role for the group-specific component (GC) gene in clinical mastitis and milk production
Knutsen, Tim; Olsen, Hanne Gro; Hansen, Hanne Hellerud; Kent, Matthew Peter; Nome, Torfinn; Grove, Harald; Olsaker, Ingrid; Sodeland, Marte; Arnyasi, Mariann; Svendsen, Morten; Heringstad, Bjørg; Lewandowska-Sabat, Anna; Dahl, Sandra Rinne; Sundsaasen, Kristil Kindem; Lien, Sigbjørn (Journal article; Peer reviewed, 2016) -
Foot and leg conformation traits have a small effect on genomic predictions of claw disorders in Norwegian Red cows
Ødegård, Cecilie; Svendsen, Morten; Heringstad, Bjørg (Journal article; Peer reviewed, 2015) -
Forslag til nye egenskaper for lynne på Norsk Rødt Fe i data fra automatiske melkesystemer
Helmsgård, Stine (Master thesis, 2017)Ved melking i automatisk melkesystem (AMS) settes det nye krav til kuas atferd, og med økende bruk av robot i melkeproduksjonen er det derfor nødvendig å fornye avlsmålet til kuene. Det ligger et potensiale å benytte ... -
Genetic analyses of claw health in Norwegian Red
Ødegård, Cecilie (PhD Thesis;2015:67, Doctoral thesis, 2015)The main objective of this PhD-study was genetic analyses of claw disorders recorded at claw trimming, to exploit the most efficient way of including claw health in the breeding scheme of Norwegian Red. Claw health data ...