Lisbeth MogensenAarhus University | AU · Department of Agroecology
Lisbeth Mogensen
PhD
About
84
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Introduction
Publications
Publications (84)
The objective of this experiment was to investigate the effect of reducing early lactation milking frequency on milk yield and persistency through lactation and early lactation fat mobilization, measured by body condition score (BCS) and BHB in milk. We hypothesized that milking cows twice per day in early lactation before milking them 3 times per...
One of the staple foods in a healthy and sustainable diet is legumes. As such, new dietary guidelines around the globe now include higher intakes of legumes. For example, the most recent Danish dietary guidelines recommend a daily intake of 100 g of cooked legumes. This is, however, far from current intakes. The question is then, how should legumes...
The public demand for increased sustainability and reduced climate impact of the pork production incites using high yielding local protein sources as substitutes for the imported protein used presently. Substitution must be done without compromising the productivity, which could counteract the positive effect on climate impact.
The aim of the study...
Purpose
When optimizing at the slaughterhouse for low environmental impact of the products, the share of the animal that goes to human consumption, by-products, or waste can potentially be affected by the allocation method. Hence, the purpose of the present study was to evaluate the effect of the results of environmental impact of Danish pork produ...
Dietary transitions are important for combating many of the environmental challenges humanity is facing today and reducing the global burden of disease. Different dietary patterns are associated with substantially different carbon footprints (CFs). This study aims to estimate the potential CF reduction on a transition from the current Danish diet t...
Systematic separation of cow and calf early after calving is common practice in both organic and conventional dairy farming. The main objective of this paper was to develop different scenarios for dam-calf contact and quantify their effects on milk uptake by the calf and environmental sustainability of the produced milk and meat from these systems....
In life cycle assessments of livestock systems, toxicity-related impacts are not commonly considered or only specific aspects (such as pesticides, manufacturing of inputs) are assessed. In this context, the aim of this study was to define a framework for assessing toxicity-related impacts and to characterize human toxicity and freshwater ecotoxicit...
Vidensyntese om livscyklusvurderinger og deklimaeffektivitet i landbrugssektoren: Del 1
Fødevarer
Pork is one of the most consumed types of meat globally and it contributes considerably to environmental impact. The aim of this study was to investigate the development of the environmental impact of Danish pork between 2005 and 2016 in relation to biological and technological changes that have occurred at the primary production and slaughterhouse...
There is public focus on the environmental impact, and in particular, the emissions of greenhouse gases (GHG), related to our food consumption. The aim of the present study was to estimate the carbon footprint (CF), land use and nutritional impact of the different beef products ready to eat in different real-life dietary patterns. Beef products acc...
There is potential to reduce greenhouse gas emissions by reducing the intake of animal-based proteins. In western countries, the intake of proteins can usually simply be reduced, but substituting even only part of the intake of animal-based proteins with plant-based proteins would also benefit both human health and the environment.
The aim of this...
The potential to reduce GHG emissions and land use of the diet by replacing animal-based protein sources with foods containing oat protein concentrate (OPC) was analysed by life cycle assessment (LCA) of six different scenarios of daily food intake of one adult. The OPC was used in the preparation of bread and pasta and as a substitute for milk in...
There is a need to find sustainable alternative protein sources in order to meet the increasing protein demand of the growing population. Legumes such as faba beans are underutilized protein rich sources and can be valorized as hybrid protein ingredient through dry fractionation technologies. Also, cereal side streams can be interesting sources tow...
This paper reviews the effects of extended lactation ( EXT ) as a strategy in dairy cattle on milk production and persistency, reproduction, milk quality, lifetime performance of the cow and finally the economic effects on herd and farm levels as well as the impact on emission of greenhouse gas at product level. Primiparous cows are able to produce...
This paper reviews the effects of extended lactation (EXT) as a strategy in dairy cattle on milk production and persistency, reproduction, milk quality, lifetime performance of the cow and finally the economic effects on herd and farm levels as well as the impact on emission of greenhouse gas at product level. Primiparous cows are able to produce e...
The management concept “extended lactation” whereby farmers deliberately delay time of first insemination allow them to utilise the high milk yield potential of modern dairy cows for longer. The main objective of this study was to quantify the effect of different extended lactation strategies on herd productivity, farm economics and sustainability...
There is a growing interest in finding feeding strategies that can decrease greenhouse gas emissions from the livestock sector. The aim of the study was to compare productivity, enteric methane emissions and carbon footprint per kg edible product of dairy bull calves fed one of four different rations. Twenty Danish Holstein bull calves were blocked...
Our understanding of food waste in the food supply chain has increased, but very few studies have been published on food waste in primary production. The overall aims of this study were to quantify the total amount of food waste in primary production in Finland, Sweden, Norway and Denmark, and to create a framework for how to define and quantify fo...
The effect of extended lactation on milk quality was investigated. Of special focus were changes in composition, cheese making qualities and sensory properties as affected by calving interval (CInt), or gestation stage, expressed as days before calving (DBC). Late lactation milk from cross-breed cows managed for 15 or 18 months CInt was sampled at...
Production of pork, the most consumed meat globally, is estimated to emit 668 m tonnes CO2-eq of greenhouse gases each year. Amongst various production systems that comprise the pig industry, grain-based intensive production is widely regarded as the largest polluter of the environment, and thus it is imperative to develop alternative systems that...
Some cows are able to achieve relatively high milk yields during extended lactations beyond 305 d in milk, and farmers may be able to use this potential by selecting the most suitable cows for an extended lactation. However, the decision to postpone insemination has to rely on information available in early lactation. The main objectives of this st...
The aim of this study is to assess the potential environmental impacts of producing maize, grass-clover, ryegrass, and straw from winter wheat as biomass feedstocks for biorefinery. The Life Cycle Assessment (LCA) method included the following impact categories: Global Warming Potential (GWP100), Eutrophication Potential (EP), Non-Renewable Energy...
The aim of the present study was to examine the environmental performance of ten Danish beef production systems covering the entire chain from the farm until the edible products and side streams leave the slaughterhouse and to explore the potential of mitigation related to the slaughtering process. The functional unit was ‘kg edible product’ includ...
The objective of this study were to quantify greenhouse gas (GHG) emissions and land use of milk production and evaluate the potential mitigation options at farm level in the Guanzhong plain, which is the main dairy farming region in China. The life cycle assessment methodology was used to analyse the GHG emissions of eight confinement dairy farms...
The idea of managing cows for extended lactations rather than lactations of the traditional length of 1 yr primarily arose from observations of increasing problems with infertility and cows being dried off with high milk yields. However, it is vital for the success of extended lactation practices that cows are able to maintain milk yield per feedin...
Deliverable D10.3Theme 2: Food, agriculture and fisheries, and biotechnologies
Deliverable D11.2Theme 2: Food, agriculture and fisheries, and biotechnologies
The concept of extended lactation is a break with the tradition of getting one calf per cow per year that should improve cow health, increase productivity and reduce greenhouse gas (GHG) emission per kg milk produced in high-yield organic dairy herds. These effects are achieved through fewer calvings per year and hence a production of fewer replace...
A nitrogen (N) budget for Denmark has been developed for the years 1990 to 2010, describing the inputs and outputs at the national scale and the internal flows between relevant sectors of the economy. Satisfactorily closing the N budgets for some sectors of the economy was not possible, due to missing or contradictory information. The budgets were...
In 2005, it became obligatory to feed all organic dairy cows in the EU 100% organically. To create a better understanding of the possible effects this would have on the whole farming system, six production strategies were formulated and the effects on productivity, economy and nutrient balance were analysed. The strategies differed with respect to...
This paper aims to address the question, “What is the environmental performance of crop residues as an alternative energy source to fossil fuels, and whether and how can it be improved?”. In order to address the issue, we compare electricity production from wheat straw to that from coal and natural gas. The results on the environmental performance...
Production of beef in Denmark and Sweden derives from very varied production systems, from intensive bull production to extensive suckler cow systems based on grazing of semi natural areas. Beef production - in particular extensive suckler cow systems - is regarded as having a high negative impact on the climate compared to meat from pigs and broil...
This paper aims to address two questions: First, what is the real cost of meat to society if taking into account the environmental costs arising throughout the product life cycle; and second, whether and how the environmental costs related to meat production can be reduced. In addressing the issues, we use pig meat production in the EU as a case st...
Introduction Comparison of Environmental Impact of the Agricultural Production of Food Products Comparison of Environmental Impact of Different Foods Environmental Impactsof Different MealS How Unilever Uses Sustainability Tools and Metrics Conclusions
The aim of the present on-farm study was to analyse vitamin content in roughage at harvest and during storage and to analyze milk vitamin content when feeding the roughage to dairy cows. Roughages produced at five organic dairy farms were monitored at harvest and several times during winter as stored silage. As an average of several sampling times,...
The potential greenhouse gas (GHG) emissions from the production of food for three different diets are compared using consequential Life Cycle Assessment. Diet 1 is an Average Danish Diet (ADD); diet 2 is based on the Nordic Nutritional Recommendations (NNR), whilst diet 3 is a New Nordic Diet (NND) developed by the OPUS project. The NND contains l...
This paper documents and illustrates a model to estimate the greenhouse gas (GHG) emissions and land use on commercial dairy farms. Furthermore, a method of allocating total farm emissions into meat and milk products was developed and, finally, potential mitigation options at farm scale were identified. The GHG emission at farm gate using a Life Cy...
The effect of housing during the first three months of life till the end of the first lactation on the human-animal relationship and milk production was examined in an experiment with four treatments of 20 female dairy calves each. For the first 12 weeks of their lives, the calves were housed in either open single pens (SOpen) or closed single pens...
To investigate the effect of social contact during early development on open-field responses and social responses, 80 female dairy calves were housed either in open single pens (SOpen), closed single pens (SClosed), calf-groups (GCalf), or groups of calves and cows (GCow) until 3 months of age. During the first 3 months, the calves were open-field...
The experiment was carried out with 57 female dairy calves (Danish Holstein Friesian) divided into three groups and treated differently during the first four days of life (colostrum period). Treatments were: single box and no contact with the dam (group S0), cow and calf together in a maternity pen and no suckling (C0), and cow and calf together an...
An experiment was conducted in eight Danish commercial dairy herds, using 168 Danish Friesian heifers for 5 months, from November 1995. Three groups were established in each herd: two small, homogeneous groups (SHom) with five light heifers (130-250 kg) or five heavy heifers (250-380 kg) and one large, heterogeneous group (LHet) with ten light and...
Livestock systems are complex in a number of aspects, which is why it is not an easy task to assess associated environmental impacts. Some of the most important aspects are: (i) the way or the degree by which the rearing of the farm animals is integrated with the production of crops, (ii) the impact of different housing and feeding conditions, (iii...
The aim of this paper is to examine the environmental consequences of beef meat production in the EU, using a life cycle approach. Four beef production systems were studied – three from intensively reared dairy calves and one from suckler herds. According to the results of the analysis, the contributions from the production of 1 kg beef meat (slaug...
In Europe, the highly developed livestock industry places a high burden on resource use and environmental quality. This paper examines pig meat production in North-West Europe as a base case and runs different scenarios to investigate how improvements in terms of energy and greenhouse gas (GHG) savings can be feasibly achieved. As shown in the resu...
The effect of toasting field beans and of grass-clover: maize silage ratio on milk production, milk composition and the sensory quality of the milk was investigated in a 2⁎2 factorial experiment. Toasting of field beans resulted in lower milk contents of both fat (44.2 versus 46.1g/kg, P=0.02) and protein (33.5 versus 34.2g/kg, P=0.008), whereas mi...
This chapter summarises economic and environmental impacts of five CAP scenarios in seven European case study regions located in Germany, Denmark, Italy, Slovakia, Hungary, Poland and France. The spatially explicit MEA-Scope modelling approach based on three farm-level models – AgriPoliS (agent-based), MODAM (bio-economic), FASSET (bio-physical) –...
This chapter presents upscaling methodologies, implemented in the MEA-Scope strategic research project. MEA-scope is based on a bottom-up approach, where farm information are collected for landscapes in Germany, Slovakia, Poland, France, Hungary, Italy and Denmark. This chapter is about the upscaling from farm to landscape level, and focuses on the...
The effect of toasted supplement on milk production was examined in three experiments on an organic study farm during the winter 2004/2005. Three types of iso-energetic supplement feed, toasted or untreated, were examined in each experiment, with an untreated cereal mixture as control. The supplement under investigation was: lupins in experiment 1,...
This experiment presents the effect of 100% organic feed rations grown at an equal area per cow on milk production performance and metabolic responses. A total of 174 Danish Holstein cows were included in two experiments on two commercial organic dairy farms during the winter 2000/2001. Three types of supplementary feed were examined: 5 kg cereals,...
Abstract Mogensen, L., Kristensen, T., Thamsborg, S.M. (Danish Institute of Agricultural Sciences, Research Centre Foulum, P.O. Box 50, DK-8830 Tjele and Royal Veterinary and Agricultural University, DK-1870 Frederiksberg C, Denmark). Productivity, economy, and nutrient balances on organic dairy farms using different types of home-grown concentrate...
In Denmark, organic feeding is typically based on homegrown feed with a high proportion of roughage. Which crop to grow and use as supplementary feed is investigated in this paper. In three experiments, barley (B) was compared with another type of supplementary feed: a concentrate mixture (C), grass pellets (G), or fodder beets (F). The concentrate...
Techniques are needed to investigate whether different strategies for conversion to organic farming might help to reduce N-losses. In this study, an N-balance technique was applied in a local area of Denmark; 25% of this area was designated as environmentally sensitive with special interests to protect groundwater quality. Three scenarios, where 25...
An experiment was carried out to investigate the effects of barley or rape seed cake as supplement to silage given ad libitum on milk production and health of dairy cows. A total of 103 cows were divided into two groups on two farms. Before the experiment, the cows had an average milk yield of 26.9 kg ECM and they were in milk for an average of 99...
During the past few years,organic dairy farming has grown dramatically inDenmark. Consequently, an increasing number ofpeople are encountering this method ofproduction for the first time. Amongst these,many veterinarians have suddenly had to dealwith organic herds in their home district, and,meeting examples of poor animal welfare, theyhave recentl...
An on-farm experiment was conducted for 152 days on seven Danish commercial dairy farms with Danish Friesian heifers housed in pens with low or high space allowance (1.5 vs. 3.0 m2 per heifer) on a slatted floor, or with high space allowance and different floor types in the lying area (slatted vs. bedded). At the beginning of the experiment, the he...
The hypothesis that daily gain is associated with resting behaviour in heifers is tested in this paper. The test is based on two experiments conducted on Danish commercial dairy farms with Danish Friesian heifers (300–400 kg) in the winter periods. Group size was 5–6 heifers per pen. Experiment A, with 80 heifers, investigated the effect of differe...
The hypothesis that an increase in the straw bedded resting area for group housed heifers would increase synchronization of resting behaviour and decrease aggressive and abnormal behaviour was tested. An experiment was conducted on two Danish commercial dairy farms with 20 Danish Friesian heifers (approximately 400 kg) from November 1994 to April 1...
An experiment was conducted on three Danish commercial dairy farms using 70 Danish Friesian heifers over a period of 141 to 162 days beginning in November. Average body weight of the heifers was 315 kg at the beginning of the experiment. Fourteen experimental pens were established with a flock size of five and different space allowance in the deep...
The aim of this new project is to develop a prototype of a decision support model simulating the feed and vitamin supply during a year to different groups of animals (calves, heifers, dry cows, cows in early and late lactation) on a farm self-sufficient with feed. The model takes into account that the content of vitamin depends on choice of crops,...
Using LCA we analyzed the GHG footprint of two healthy Nordic diets: One based on the Nordic Nutritional Recommendations (NNR) and the other on preliminary specifications for a New Nordic Diet (NND) as part of the OPUS project. Both diets were analyzed with the average Danish diet (ADD) as reference, and all diets were adjusted to similar energy an...
Sammendrag I FØJO3 projektet ECOVIT undersøges, hvorvidt det er muligt for en bedrift med økologisk maelkeproduktion at blive selvforsynende med vitaminer og mineraler. I projektet indgik et samarbejde med 5 private gårde med maelkeproduktion. På disse gårde blev der fundet en po-sitiv sammenhaeng mellem indholdet af vitaminer i det producerede gro...
Projects
Projects (2)
Research focus: calf-dam rearing, mixed age groups in robust innovative grazing systems, and significantly reducing the use of antibiotics
GrazyDaiSy investigates how to manage mixed age groups of cattle, including rearing calves with their dams. We focus on maintaining a high level of animal health, and a constant effort to minimize medication. Furthermore, we focus on implementing resilient grazing strategies to improve animal performance and decrease impacts on the ecosystem on and around the farm. However, we also address the special challenges of keeping older and younger animals together on grass.