Blar i Brage NMBU på forfatter "Prestløkken, Egil"
-
Effekt av ulike beitemetoder på utslipp av metan hos melkekyr
Neraas, Marte Sofie (Master thesis, 2016-06-02)Globalt representere husdyrproduksjon 14,5 % av antropogene klimagassutslipp, mens landbruket i Norge står for tilsvarende 9 %. Innenfor husdyrproduksjon kommer den største andelen av klimagassutslippene fra metanutslipp ... -
Evaluation of feeding value of cereals and legumes for ruminants using in vitro gas production
Chao, Ke (Master thesis, 2020)This thesis consists of a literature background and laboratory experiment. The literature review contains knowledge of raw ingredients, ruminal digestion of nutrients and feed evaluation methods of ruminants. Feed quality ... -
Exploring dry-film ftir spectroscopy to characterize milk composition and subclinical ketosis throughout a cow’s lactation
Rachah, Amira; Reksen, Olav; Tafintseva, Valeria; Stehr, Felicia Judith Marie; Rukke, Elling-Olav; Prestløkken, Egil; Martin, Adam Dunstan; Kohler, Achim; Afseth, Nils Kristian (Peer reviewed; Journal article, 2021) -
Exploring Dry-Film FTIR Spectroscopy to Characterize Milk Composition and Subclinical Ketosis throughout a Cow’s Lactation
Rachah, Amira; Reksen, Olav; Tafintseva, Valeria; Stehr, Felicia Judith Marie; Rukke, Elling-Olav; Prestløkken, Egil; Martin, Adam Dunstan; Kohler, Achim; Afseth, Nils Kristian (Peer reviewed; Journal article, 2021)The use of technologies for measurements of health parameters of individual cows may ensure early detection of diseases and maximization of individual cow and herd potential. In the present study, dry-film Fourier transform ... -
Feeding behaviour of dairy cows fed a diet with protein derived from yeast (Candida utilis) compared with diets containing soybean meal and barley
Solhjem, Ingvild (Master thesis, 2020)Norwegian Red dairy cows (NRF) are fed mainly roughage, with supplemented concentrate feed to increase milk production. Concentrate feed contains approximately 50 % nationally sourced ingredients, while the rest are imported, ... -
Fordøying av fôrrasjonar til mjølkekyr målt med AIA og iNDF
Slåttelid, Linda Høyby (Master thesis, 2021)Kunnskap om næringsinnhaldet hjå fôr er fundamentalt for god fôrutnytting og effektiv mjølkeproduksjon. Fôr står for om lag 80% av dei variable kostnadane hjå mjølkegardane, og god fôrutnytting er essensielt for å skape ... -
Forekomst av sub-klinisk melkefeber hos Norsk Rødt Fe (NRF) : en pilotstudie ved Senter for husdyrforsøk
Brauti, Øystein; Nordbø, Elisabeth Riskedal (Master thesis, 2018)Denne oppgaven består av en teoridel og egne undersøkelser. I teoridelen blir ulik litteratur knyttet opp mot ubalanse i mineraltilførselen og risiko for utvikling av sub-klinisk melkefeber gjennomgått. Melkefeber er en ... -
Fourier transform infrared spectral data as a tool to predict energy balance, energy- and dry matter intake in lactating dairy cows
Rachah, Amira; Reksen, Olav; Afseth, Nils Kristian; Tafintseva, Valeria; Ferneborg, Sabine; Martin, Adam Dunstan; Kohler, Achim; Prestløkken, Egil (Peer reviewed; Journal article, 2020) -
Fôring av melkekyr etter en standard laktasjonskurve sammenlignet med en dynamisk tilnærming av laktasjonskvurven
Lindstrøm, Kennet Solheim (Master thesis, 2017)Fôring av melkekyr gjøres etter valg av en fôringsstrategi, der utførelsen vil ha en direkte påvirkning på laktasjonskurvens form. Fôret utgjør ca. 70 % av de variable kostnadene i melkeproduksjonen (Tine Rådgiving 2012), ... -
Fôrinntak, ete- og drøvtyggingsåtferd hjå NRF kyr gitt ein fullfôrrasjon med gradert nivå av raudalgar (Asparagopsis taxiformis)
Nyløy, Emma (Master thesis, 2022)Denne oppgåva består av ein litteraturdel og ein forsøksdel. Litteraturdelen tek i hovudsak føre seg faktorar som påverkar ete- og drøvtyggingsåtferda til kyr, samt litt generelt om fordøyingssystemet, mjølkeproduksjon og ... -
Genetic improvement of feed efficiency in dairy cattle
Wallén, Sini E (PhD Thesis;2017:106, Doctoral thesis, 2017)The main objective of the thesis was to investigate the requirements and possibilities for including feed efficiency (FE) in the breeding goal in dairy cattle and hence enable the genetic improvement of feed efficiency. ... -
Genetic parameters for cow-specific digestibility predicted by near infrared reflectance spectroscopy
Mehtio, Terhi; Mäntysaari, Päivi; Kokkonen, Tuomo; Kajava, Sari; Prestløkken, Egil; Kidane, Alemayehu; Wallén, Sini Elina; Nyholm, Laura; Negussie, Enyew; Mantysaari, Esa A.; Lidauer, Martin H. (Journal article; Peer reviewed, 2019)Digestibility traits included in this study were dry matter digestibility (DMD, g/kg), which was calculated based on the indigestible neutral detergent fibre (iNDF, g/kg of dry matter) content in faeces (iNDFf) and in diet ... -
Grovfôret den viktigaste proteinkjelda for drøvtyggjaren
Steinshamn, Håvard; Bakken, Anne Kjersti; Prestløkken, Egil (Journal article, 2019) -
Heat-treated rapeseed expeller press cake with extremely low glucosinolate content reduce transfer of iodine to cow milk
Trøan, Gisken; Pihlava, JM; Brandt-Kjelsen, Anicke; Salbu, Brit; Prestløkken, Egil (Journal article; Peer reviewed, 2018) -
High-digestible silages allow low concentrate supply without affecting milk production or methane emissions
Álvarez, C.; Nielsen, N.I.; Weisbjerg, M.R.; Volden, Harald; Eknæs, Margrete; Prestløkken, Egil (Peer reviewed; Journal article, 2022) -
Improved starch and protein utilization by extruded feed pellets targeted to benefit dynamics of rumen digestion in dairy cows
Khan, Ghulam Qasim (PhD Thesis;2021:15, Doctoral thesis, 2021)To meet their requirements for energy and amino acids, high-producing dairy cows are fed compound feeds containing high amounts of starch and protein. Optimal utilization of these high-quality feeds is critical, where the ... -
In Vitro fermentation and In sacco degradation of the alkaline compound feeds in dairy cow diets
Muqier, X (Master thesis, 2021)The primary aim of this work was to test the in vitro fermentation kinetics and in sacco rumen degradation of different formulations of alkaline treated local grains in the dairy cattle diet, in contrast to soy-based ... -
Inclusion of Red Macroalgae (Asparagopsis taxiformis) in Dairy Cow Diets Modulates Feed Intake, Chewing Activity and Estimated Saliva Secretion
Nyløy, Emma; Prestløkken, Egil; Eknæs, Margrete; Eikanger, Katrine Sømliøy; Hagen, Live Heldal; Kidane, Alemayehu (Peer reviewed; Journal article, 2023) -
Interaction between feed use efficiency and level of dietary crude protein on enteric methane emission and apparent nitrogen use efficiency with Norwegian Red dairy cows
Sagaye, Alemayehu Kidane; Øverland, Margareth; Mydland, Liv Torunn; Prestløkken, Egil (Journal article; Peer reviewed, 2018)We assessed the interactive effects of gross feed use efficiency (FUE, milk yield per kg DMI) background (“high” = HEFF vs. “low” = LEFF) and graded levels of dietary CP (130, 145, 160 and 175 g/kg DM) on milk production, ... -
Milk production of Norwegian Red dairy cows on silages presumed either low or optimal in dietary crude protein content
Sagaye, Alemayehu Kidane; Øverland, Margareth; Mydland, Liv Torunn; Prestløkken, Egil (Journal article; Peer reviewed, 2018)