A5025292854- Ruminant Nutrition and Digestive Physiology
- Agriculture Sustainability and Environmental Impact
- Odor and Emission Control Technologies
- Animal Nutrition and Physiology
- Anaerobic Digestion and Biogas Production
- Advanced Combustion Engine Technologies
- Meat and Animal Product Quality
- Genetic and phenotypic traits in livestock
- Engine and Fuel Emissions
- Atmospheric and Environmental Gas Dynamics
- Advanced Thermodynamic Systems and Engines
- Reproductive Physiology in Livestock
Tine (Norway)
2020-2022
Norwegian University of Life Sciences
2020-2022
Ruminant livestock are an important source of anthropogenic methane (CH4). Decreasing the emissions enteric CH4 from ruminant production is strategic to limit global temperature increase 1.5°C by 2050. Research in area mitigation has grown exponentially last 2 decades, with various strategies for abatement being investigated: intensification, dietary manipulation (including supplementation and processing concentrates lipids, management forage pastures), rumen (supplementation ionophores,...
The enzymatic digestibility of organic matter (EDOM) method is an in vitro multi-enzymatic for estimating the (OM) feeds. EDOM previously showed high accuracy with vivo values compound aim this study was to evaluate precision and determine its additivity, compared long-assumed additive property chemical components 149 feed samples, 70 commercial feeds 79 associated ingredients, were analyzed a laboratory (lab1) OM measured by (OMDEDOM) 2 repetitions separated time estimate repeatability. Of...
The aim of this study was to develop a basic model predict enteric methane emission from dairy cows and update operational calculations for the national inventory in Norway. Development models utilized information that is available only feeding experiments. Basic were developed using database with 63 treatment means 19 studies evaluated against an external (n = 36, 10 studies) along other extant models. In total, included 99 29 records CH4 production (MJ/day), dry matter intake (DMI) dietary...
In this study, we tested a response function comprising responses in milk to changes organic matter digestibility of silages and concentrate supply. We studied the effect silage supply on yield, feed intake, body weight, methane production using 60 Norwegian Red cows. The experiment was complete randomized block design 3 periods. pre-experimental period lasted 20 d all cows were fed common for ad libitum intake according yield. Next, 1 17 divided into 2 treatments, where low-digestible (LDS)...
The aim of this study was to develop a basic model predict enteric methane emission from dairy cows and update operational calculations for the national inventory in Norway. Basic models were developed using database with 63 treatment means 19 studies. included records CH4 production (MJ/day), dry matter intake (DMI), dietary nutrient composition. evaluated against an external (n=36, ten studies) along other extant models. When by low root mean square prediction errors high concordance...
We assessed the effect of rumen fluid (RF) collection site (central vs. ventral), seaweed (with or without Asparagopsis taxiformis) and their interaction on in vitro total gas methane yield, fermentation parameters. Rumen was collected via esophageal tubing from six cows, controlling sampling locations manually through cannula. Linear mixed-effect model analysis revealed no interactions between seaweed. Seaweed reduced (P < 0.01) yield (mL/g DM) by 10% 93%, respectively. Collection had but...
The objective of the study was to develop a static empirical model for estimation net energy content compound feeds in dynamic feeding system using lactation at 20 kg dry matter intake/d (NEL20) values calculated by Nordic Feed Evaluation System (NorFor) model. In NorFor system, NEL20 is standardized value used describe feeds. would allow prediction without access input data needed models. Our hypothesis that can be predicted organic digestibility (in vitro) and chemical components as...