A5006076830- Ruminant Nutrition and Digestive Physiology
- Agriculture Sustainability and Environmental Impact
- Reproductive Physiology in Livestock
- Odor and Emission Control Technologies
- Agricultural Economics and Policy
- Liver Disease Diagnosis and Treatment
- Effects of Environmental Stressors on Livestock
- Enzyme Production and Characterization
- Sustainable Agricultural Systems Analysis
- Muscle metabolism and nutrition
- Climate Change Policy and Economics
- Microbial Metabolites in Food Biotechnology
- Phytochemical Studies and Bioactivities
- Nitrogen and Sulfur Effects on Brassica
- Anaerobic Digestion and Biogas Production
- Soil and Water Nutrient Dynamics
- Genetic and phenotypic traits in livestock
Arla Foods (Denmark)
2024
Aarhus University
2012-2019
Agroécologie
2015
Nitrate may lower methane production in ruminants by competing with methanogenesis for available hydrogen the rumen. This study evaluated effect of 4 levels dietary nitrate addition on enteric production, emission, feed intake, rumen fermentation, nutrient digestibility, microbial protein synthesis, and blood methemoglobin. In a 4×4 Latin square design lactating Danish Holstein dairy cows fitted rumen, duodenal, ileal cannulas were assigned to calcium ammonium levels: control, low, medium,...
A data-set with 47 treatment means (N = 211) was compiled from research institutions in Denmark, Norway, and Sweden order to develop a prediction equation for enteric methane (CH4) emissions dairy cows. The aim implement the Nordic feed evaluation system NorFor. should therefore be based on input variables available best predict CH4 (MJ/d) dry matter intake (DMI, kg/d), content of (g/kg DM) fatty acids (FA), crude protein (CP), neutral detergent fiber (NDF). 1.36 (±0.10) × DMI – 0.125...
Many feeding trials have been conducted to quantify enteric methane (CH4) production in ruminants. Although a relationship between diet composition, rumen fermentation and CH4 is generally accepted, the efforts this within same experiment remain scarce. In present study, data set was compiled from results of three intensive respiration chamber with lactating intestinal fistulated Holstein cows, including measurements digestion, parameters production. Two approaches were used calculate...
Nitrate supplements to cattle diets can reduce enteric CH emissions. However, if NO metabolism stimulates emissions, the effectiveness of dietary for mitigation will be reduced. We quantified emissions as part a dairy cow feeding experiment in which urea was substituted nearly iso-N with 0, 5, 14 or 21 g kg dry matter (DM). The Latin square repetition Period 1. Each period lasted 4 wk, emission measurements Week using respiration chambers. During 3, concentrations chamber outlet air were...
The aim of this experiment was to measure enteric methane (CH4) emission and its relation with rumen digestion in dairy cows fed diets rich 1 the 2 carbohydrate sources, starch or sugar. rations were based on late first-cut grass-clover silage supplemented wheat (Wh), NaOH-treated (Wh+NaOH), sugar beet molasses (Mo), addition sodium bicarbonate (Mo+Bic). Wheat made up 35% dry matter wheat, respectively. Four fitted ruminal, duodenal, ileal canulae used a 4 × Latin square design. Nutrient...
Methane constitutes a significant loss of feed gross energy in ruminants, and there is an ongoing struggle for identifying animal characteristics feasible documentation National Greenhouse Gas Inventories. The aim the current study was to develop model that predicts methane conversion factor (Ym, % energy) dairy cows on basis data obtained from range our respiration studies, and, subsequently, use this predict Ym Holstein Jersey compiled average national farm dry matter intake, yield...
1. The effect of rolled barley, sodium hydroxide-treated wheat or maize cob silage on digestive enzymes activity in the alimentary tract dairy cows A. Moharrery, L. Hymøller, M. Weisbjerg Journal Animal and Feed Sciences CrossRef
Abstract The aim of the experiment was to study formation and impact bromoform metabolites from Asparagopsis taxiformis on in vitro rumen fermentation parameters microbial composition over time. Rumen fluid three fistulated lactating Holstein-Friesian dairy cows collected after buffering used as inoculum. Cows were fed a total mixed ration grass silage, corn silage concentrate. In 0.5 g dry matter (DM) substrate incubated, consisting either 0.3 DM 0.2 (Control) or 0.295 0.195 0.01 A. (ASP)....