Ingunn Schei

ORCID: 0000-0001-9959-6374
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About
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Research Areas
  • Ruminant Nutrition and Digestive Physiology
  • Reproductive Physiology in Livestock
  • Genetic and phenotypic traits in livestock
  • Effects of Environmental Stressors on Livestock
  • Animal health and immunology
  • Nutritional Studies and Diet
  • Mercury impact and mitigation studies
  • Rabbits: Nutrition, Reproduction, Health
  • Heavy metals in environment
  • Animal Nutrition and Physiology
  • Forecasting Techniques and Applications
  • Agriculture Sustainability and Environmental Impact
  • Milk Quality and Mastitis in Dairy Cows
  • Muscle metabolism and nutrition
  • Chromium effects and bioremediation
  • Chemical Analysis and Environmental Impact

Tine (Norway)
2005-2024

Norwegian University of Life Sciences
2005-2024

Efforts to mitigate enteric methane (CH4) emission from ruminants by using the red macroalgae Asparagopsis taxiformis (AT) have demonstrated promising results both in vitro and vivo. We assessed effects of wild harvested freeze-dried AT inclusion grass silage-based diets Norwegian Red dairy cows on feed intake, milk yield composition, rumen fermentation CH4 emission. Fifteen (9 cannulated 6 intact) multiparous with an average (±SD) covariate period (MY) 33.0 (3.8) kg/day were used...

10.1016/j.livsci.2024.105495 article EN cc-by Livestock Science 2024-05-20

Grass-clover silage constitutes a large part of ruminant diets in Northern and Western Europe, but the impact quality on methane (CH4) production is largely unknown. This study was conducted to identify attributes grass associated with variation CH4 yield. We expected that nutrient concentrations fermentation products would affect yield, these factors could be used predict methanogenic potential silages. Round bales (n = 78) grass-clover from 37 farms Norway were sampled, incubated, screened...

10.1016/j.anifeedsci.2022.115249 article EN cc-by Animal Feed Science and Technology 2022-02-12

The objectives of this study were to compare the effects post-ruminal and intravenous infusions wheat starch or glucose (CHO) a mixture amino acids (AA) on milk protein yield, nitrogen utilisation, plasma metabolites mammary extraction rate dairy cows in early lactation. Eight cow, ruminally fistulated, was assigned two 4 × Latin squares during 14-day periods, where last 7 days for infusions. Infusions were: (1) abomasum (SP), (2) blood (GB), (3) AA (AP), (4) (AB). experiment started 54 ±...

10.1017/s175173110768505x article EN cc-by-nc-nd animal 2007-01-01

Abstract To evaluate the iodine (I) level in Norwegian milk, I concentration was determined 104 dairy tanker milk samples collected from 19 tours different areas of Norway, throughout year 2008. The indoor feeding 122 µg L−1 and higher than summer season, being 92 L−1. weighted average mean 114 milk. results showed that winter season 2008 has been reduced to nearly half during last decade, 232 2000. is at same as a decade ago. reason for reduction produced not known. Keywords: Dairy...

10.1080/09064702.2012.754932 article EN Acta Agriculturae Scandinavica Section A – Animal Science 2012-09-01

Six dual-flow continuous-culture fermenters (1300 mL) were used to evaluate in a 2 × 3 factorial arrangement the effects of carvacrol (CAR) and cinnamaldehyde (CIN) supplementation [0.2 g kg -1 dietary dry matter (DM)] source grain (barley vs. corn) on microbial fermentation. Inoculum was collected from four ruminally cannulated lactating Holstein cows fed mixed diet 50% forage concentrate (16.3% crude protein, 33.5% neutral detergent fiber, DM basis). The experimental period consisted 10 d,...

10.4141/cjas08062 article EN Canadian Journal of Animal Science 2009-03-01

The objectives of this study were to compare the effects post-ruminal and intravenous infusions wheat starch or glucose (CHO) a mixture amino acids (AA) on milk protein yield, nitrogen (N) utilisation, plasma metabolites mammary extraction rate dairy cows in late lactation. Eight cow, ruminally fistulated, was assigned two 4 × Latin squares during 14-day periods, where last 7 days for infusions. Infusions were: (1) abomasum (SP), (2) blood (GB), (3) AA (AP), (4) (AB). experiment started 165...

10.1017/s1751731107685061 article EN cc-by-nc-nd animal 2007-01-01

Dairy milk samples from 37 tours in 15 areas of Norway were collected during indoor feeding or on pasture 2008 and analyzed with respect to 6 major elements (Ca, P, K, S, Na, Mg) 28 trace (As, Ba, Be, Bi, Cd, Ce, Co, Cr, Cs, Cu, Dy, Fe, I, La, Li, Mn, Mo, Nd, Pb, Rb, Sb, Se, Sm, Sr, V, Y, Yb Zn). Surprisingly, the least-square means did not vary much one region another. The concentration levels iodine, copper, manganese lithium northern higher compared other regions. Milk south was enriched...

10.1080/09064702.2015.1130742 article EN Acta Agriculturae Scandinavica Section A – Animal Science 2015-04-03

Efforts to mitigate enteric methane (CH4) emission from ruminants by using the red macroalgae Asparagopsis taxiformis (AT) have demonstrated promising results both in vitro and vivo. We assessed effects of wild harvested freeze-dried AT inclusion grass silage-based diets Norwegian Red dairy cows on feed intake, milk yield composition, rumen fermentation CH4 emission. Fifteen (9 canulated 6 intact) multiparous with an average (±SD) covariate period (MY) 33.0 (3.8) kg/day were used experiment....

10.2139/ssrn.4720332 preprint EN 2024-01-01

The aim of this study was to examine how silages from different grassland species and harvesting frequencies affect feed intake, milk production, methane (CH4) emission in dairy cows. We hypothesized that cows consuming more frequent harvest, grass with greater OM digestibility legumes lower NDFom concentration would have silage DMI yield thereby CH4 intensity. Forty Norwegian Red were allocated 5 treatments a cyclic changeover design four 21-d periods (14 d adaptation, 7 data collection)....

10.3168/jds.2024-25010 article EN cc-by Journal of Dairy Science 2024-12-18

1. Effects of season and age at first calving on genetic phenotypic characteristics lactation curve parameters in Holstein cows Torshizi Elahi Journal Animal Science Technology CrossRef

10.22358/jafs/74168/2007 article EN cc-by Journal of Animal and Feed Sciences 2007-01-26

Accurate forecasts of milk delivery to dairy are crucial a secure and stable supply customers, the effective use raw milk, reduction logistics costs greenhouse gas emissions. One main objectives our study is develop test several quantitative models forecast monthly deliveries from farms dairies. Modern statistical learning machine algorithms were utilized, in addition traditional time series model. In we applied Lasso Group regression together with generalized linear regression, model...

10.2139/ssrn.4308306 article EN SSRN Electronic Journal 2022-01-01
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