eDissertationen: eDissertationen: Neuzugänge
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Optimization of point grids in regional satellite gravity analysis using a Bayesian approach
(2020-03-25)The subject of this thesis is the global and regional gravity field determination from GOCE data using the short arc approach. The focus is on the extension of the regional method regarding an adaption of the model resolution ... -
Influences on the activity and lying behavior of lactating dairy cows with particular attention to lameness
(2020-03-19)Lameness, which is usually the cause of a painful claw disease, continues to be the third most common reason for culling on dairy-producing farms in Germany. Claw diseases are not only painful, affecting both health and ... -
Regulation of branched-chain amino acid metabolism in major metabolic tissues of dairy cows during late pregnancy and early lactation
(2020-04-01)For dairy cows, the transition from late pregnancy to early lactation is characterized by dramatic changes in endocrine status, nutrient utilization as well as tissue metabolism. Specific metabolic processes, e.g., in ... -
Genetic analyses of piglet survival and postnatal growth
(2020-03-20)Piglet survival determines the success of piglet production. Decreased piglet survivability raises animal welfare concerns and increasing litter sizes intensified this situation. In the recent work, the prospects to select ... -
Interactive tillage & crop residue management effects on soil properties, crop nutrient uptake & yield in different weathered soils of West Africa: measurements, modelling & scenario simulations
(2020-04-22)Sustainable crop production intensification in West Africa is hampered by constraints such as soil degradation, mainly due to excessive mining of soil nutrients, topsoil loss by surface runoff, and climatic factors like ... -
Spatio-temporal landscape transformations in Southern Chile and its implications on ecosystem services supply and beneficiaries
(2020-03-10)Human-induced global change has driven drastic modifications of ecosystems that could lead to unexpected and unprecedented transformations in the present and future decades. Current systems modifications increased the need ... -
Changes of inner teat morphology caused by the milking process and by incomplete milking during dry-off as assessed by innovative technologies
(2020-03-03)In dairy farming, the timing of the lactation cycle and the way of milk removal differ considerably from the natural conditions. Ensuring good health and wellbeing of farm animals is of great interest from both an economic ... -
Automatische, hochaufgelöste 3D-Phänotypisierung von Trauben und Beeren der Weinrebe unter Feldbedingungen
(2020-03-03)Pilzwiderstandsfähige Sorten (PIWI) sind eine der Innovationen im Weinbau. Das Projekt Novel Viticulture Systems for sustainable production and products (NoViSys) kombiniert die PIWIs zur Effizienzsteigerung ... -
Studies on the effect of exogenous amino acid application on nematodes
(2020-03-02)Plant parasitic nematodes are considered as key pathogens in agricultural crop production. They cause substantial yield losses in numerous crops and across all climatic regions worldwide. Antagonistic effects on various ... -
Use of Black Soldier Fly (Hermetia illucens) in bioconversion and feed production
(2020-02-20)Population and economic growth, rapid urbanization and shifts in dietary preferences towards consuming more animal-derived products are some of the major challenges facing sub-Saharan Africa (SSA) today. Consequently, large ... -
Food Security Monitoring for Developing Countries in the Age of Big Data
(2020-02-10)Approximately 817 million people are currently estimated to be undernourished and 85 million people across 46 countries are estimated to be in need of food emergency assistance over the course of 2019. Conflict, migration ... -
Active 3D Reconstruction for Mobile Robots
(2020-01-13)Mapping the environment with the purpose of building a 3D model that represents it, is traditionally achieved by trained personnel, using measuring equipment such as cameras or terrestrial laser scanners. This process is ... -
Acute impact of dietary pattern and walking on postprandial metabolism, attention, and mood in older adults with a cardiovascular disease risk phenotype
(2020-01-27)Attenuating the postprandial stress response and its associated inflammatory and endothelial events through specific nutritional and lifestyle interventions seems to be a promising and important approach to decrease the ... -
In vitro and in vivo assessment of lead toxicity on mammalian female reproduction and effect of antioxidants
(2020-03-17)Heavy metals are among the environmental toxicants incurring great concern for human and animals because of their toxicity even at low concentrations. Lead (Pb) has been shown to induce severe and long lasting effects on ... -
Effect of cow’s metabolic status on the epigenome profile of oocytes and embryos
(2020-01-07)In lactating cows, intensive genetic selection for improved milk production has been associated with reduced reproductive capacity, leading to increased early embryo loss. During post-calving lactation, the cow’s dietary ... -
Influence of animal-specific factors on the quality and shelf life of fresh poultry and pork meat
(2019-12-12)The objective of this thesis was the assessment of the influence of animal-specific factors on typical quality parameters and shelf life of fresh poultry and pork meat. The trials comprised different study designs to analyze ... -
Homorhize und allorhize Wurzelsysteme: Vorfruchtwirkungen mehrjähriger Futterpflanzen auf die Ertragsbildung von Kulturpflanzen
(2019-12-11)Seit dem Jahr 2007 wird ein mehrfaktorieller Feldversuch zu Früchtefolgen mit Feldfutterpflanzen auf dem Campus Klein-Altendorf nahe Bonn durchgeführt. Das Futter wird nicht geworben, sondern verbleibt nach Mulchschnitten ... -
Effects of pre-ensiling treatments on quality of lucerne silages, in vitro rumen fermentation and microbiota composition
(2019-12-10)Lucerne (Medicago sativa L.) silages (LS) are commonly fed to ruminants. Due to substantial proteolysis during ensiling, the majority of crude protein (CP) in LS is non-protein nitrogen (NPN), which is rapidly ... -
Untersuchungen zur Wirtseignung toleranter Zuckerrübensorten für den Rübenzystennematoden Heterodera schachtii
(2019-12-10)Der Rübenzystennematode Heterodera schachtii ist der bedeutendste Schädling der Zuckerrübe. Anfällige Zuckerrübensorten zeigen eine hohe Wirtseignung für diesen Wurzelparasiten, sodass sich dieser besonders stark ... -
Consumption Choices: The effects of food production, markets and preferences on diets in India
(2019-12-20)The choice of which food to consume is often an individual choice. Yet, food and nutrition insecurity presents a situation that those who suffer from it have rarely chosen consciously. Availability of foods, their accessibility ...
