Blar i Brage NMBU på forfatter "Wetlesen, Marit Smith"
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Analyser av melkerobotdata på Norsk Rødt Fe (NRF) i seleksjonsforsøk og gamle norske kuraser
Wetlesen, Marit Smith (Master thesis, 2014-08-12)Melkeroboter produserer store mengder datamateriale av høy kvalitet, som har potensial til bruk i avlsarbeid for melkeku. Hensikten med disse analysene var å bruke melkerobotdata fra en Lely melkerobot på Jønsberg videregående ... -
Estimation of breed and heterosis effects for cow productivity, carcass traits and income in beef × beef and dairy × beef crosses in commercial suckler cow production
Wetlesen, Marit Smith; Åby, Bente Aspeholen; Vangen, Odd; Aass, Laila (Peer reviewed; Journal article, 2020)This study aims to investigate calving difficulties, birth-, weaning- and carcass weight, herd life of cow, age at slaughter, average daily carcass gain, carcass conformation, carcass fatness and carcass income per carcass, ... -
Simulations of feed intake, production output, and economic result within extensive and intensive suckler cow beef production systems
Wetlesen, Marit Smith; Åby, Bente Aspeholen; Vangen, Odd; Aass, Laila (Peer reviewed; Journal article, 2020)The aim of the present study was to investigate the impact of and variation in both maternal and production input traits on the production economy within extensive and intensive suckler cow production systems. By use of a ... -
Suckler cow efficiency – breed by environment interactions in commercial herds under various natural production conditions
Wetlesen, Marit Smith; Åby, Bente Aspeholen; Vangen, Odd; Aass, Laila (Peer reviewed; Journal article, 2020)The significance of breed by environment interaction on suckler cow efficiency traits was investigated, using production data from the Norwegian Beef Cattle Recording System and data collected (feed regimes, etc.) from 27 ... -
Variability in greenhouse gas emission intensity of semi-intensive suckler cow beef production systems
Samsonstuen, Stine; Åby, Bente Aspeholen; Crosson, Paul; Beauchemin, Karen A.; Wetlesen, Marit Smith; Bonesmo, Helge; Aass, Laila (Peer reviewed; Journal article, 2020)Emission intensities from beef production vary both among production systems (countries) and farms within a country depending upon use of natural resources and management practices. A whole-farm model developed for Norwegian ...