Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Identifying Dietary Strategies to Improve Nutrient Adequacy among Ethiopian Infants and Young Children Using Linear Modelling
Samuel, Aregash ; Osendarp, Saskia J.M. ; Ferguson, Elaine ; Borgonjen, Karin ; Alvarado, Brenda M. ; Neufeld, Lynnette M. ; Adish, Abdulaziz ; Kebede, Amha ; Brouwer, Inge D. - \ 2019
Nutrients 11 (2019)6. - ISSN 2072-6643
complementary food - Ethiopia - food-based dietary recommendations - nutrient adequacy - Optifood analysis

Nutrient adequacy of young children's diet and best possible strategies to improve nutrient adequacy were assessed. Data from the Ethiopian National Food Consumption Survey were analysed using Optifood (software for linear programming) to identify nutrient gaps in diets for children (6-8, 9-11 and 12-23 months), and to formulate feasible Food-Based Dietary Recommendations (FBDRs) in four regions which differ in culture and food practices. Alternative interventions including a local complementary food, micronutrient powders (MNPs), Small quantity Lipid-based Nutrient Supplement (Sq-LNS) and combinations of these were modelled in combination with the formulated FBDRs to compare their relative contributions. Risk of inadequate and excess nutrient intakes was simulated using the Estimated Average Requirement cut-point method and the full probability approach. Optimized local diets did not provide adequate zinc in all regions and age groups, iron for infants <12 months of age in all regions, and calcium, niacin, thiamine, folate, vitamin B12 and B6 in some regions and age-groups. The set of regional FBDRs, considerably different for four regions, increased nutrient adequacy but some nutrients remained sub-optimal. Combination of regional FBDRs with daily MNP supplementation for 6-12 months of age and every other day for 12-23 months of age, closed the identified nutrient gaps without leading to a substantial increase in the risk of excess intakes.

Meta-analysis of epigenome-wide association studies in neonates reveals widespread differential DNA methylation associated with birthweight
Küpers, Leanne K. ; Monnereau, Claire ; Sharp, Gemma C. ; Yousefi, Paul ; Salas, Lucas A. ; Ghantous, Akram ; Page, Christian M. ; Reese, Sarah E. ; Wilcox, Allen J. ; Czamara, Darina ; Starling, Anne P. ; Novoloaca, Alexei ; Lent, Samantha ; Roy, Ritu ; Hoyo, Cathrine ; Breton, Carrie V. ; Allard, Catherine ; Just, Allan C. ; Bakulski, Kelly M. ; Holloway, John W. ; Everson, Todd M. ; Xu, Cheng Jian ; Huang, Rae Chi ; Plaat, Diana A. van der; Wielscher, Matthias ; Merid, Simon Kebede ; Ullemar, Vilhelmina ; Rezwan, Faisal I. ; Lahti, Jari ; Dongen, Jenny van; Langie, Sabine A.S. ; Richardson, Tom G. ; Magnus, Maria C. ; Nohr, Ellen A. ; Xu, Zongli ; Duijts, Liesbeth ; Zhao, Shanshan ; Zhang, Weiming ; Plusquin, Michelle ; DeMeo, Dawn L. ; Solomon, Olivia ; Heimovaara, Joosje H. ; Jima, Dereje D. ; Gao, Lu ; Bustamante, Mariona ; Perron, Patrice ; Wright, Robert O. ; Hertz-Picciotto, Irva ; Zhang, Hongmei ; Karagas, Margaret R. ; Gehring, Ulrike ; Marsit, Carmen J. ; Beilin, Lawrence J. ; Vonk, Judith M. ; Jarvelin, Marjo Riitta ; Bergström, Anna ; Örtqvist, Anne K. ; Ewart, Susan ; Villa, Pia M. ; Moore, Sophie E. ; Willemsen, Gonneke ; Standaert, Arnout R.L. ; Håberg, Siri E. ; Sørensen, Thorkild I.A. ; Taylor, Jack A. ; Räikkönen, Katri ; Yang, Ivana V. ; Kechris, Katerina ; Nawrot, Tim S. ; Silver, Matt J. ; Gong, Yun Yun ; Richiardi, Lorenzo ; Kogevinas, Manolis ; Litonjua, Augusto A. ; Eskenazi, Brenda ; Huen, Karen ; Mbarek, Hamdi ; Maguire, Rachel L. ; Dwyer, Terence ; Vrijheid, Martine ; Bouchard, Luigi ; Baccarelli, Andrea A. ; Croen, Lisa A. ; Karmaus, Wilfried ; Anderson, Denise ; Vries, Maaike de; Sebert, Sylvain ; Kere, Juha ; Karlsson, Robert ; Arshad, Syed Hasan ; Hämäläinen, Esa ; Routledge, Michael N. ; Boomsma, Dorret I. ; Feinberg, Andrew P. ; Newschaffer, Craig J. ; Govarts, Eva ; Moisse, Matthieu ; Fallin, M.D. ; Melén, Erik ; Prentice, Andrew M. ; Kajantie, Eero ; Almqvist, Catarina ; Oken, Emily ; Dabelea, Dana ; Boezen, H.M. ; Melton, Phillip E. ; Wright, Rosalind J. ; Koppelman, Gerard H. ; Trevisi, Letizia ; Hivert, Marie France ; Sunyer, Jordi ; Munthe-Kaas, Monica C. ; Murphy, Susan K. ; Corpeleijn, Eva ; Wiemels, Joseph ; Holland, Nina ; Herceg, Zdenko ; Binder, Elisabeth B. ; Davey Smith, George ; Jaddoe, Vincent W.V. ; Lie, Rolv T. ; Nystad, Wenche ; London, Stephanie J. ; Lawlor, Debbie A. ; Relton, Caroline L. ; Snieder, Harold ; Felix, Janine F. - \ 2019
Nature Communications 10 (2019)1. - ISSN 2041-1723

Birthweight is associated with health outcomes across the life course, DNA methylation may be an underlying mechanism. In this meta-analysis of epigenome-wide association studies of 8,825 neonates from 24 birth cohorts in the Pregnancy And Childhood Epigenetics Consortium, we find that DNA methylation in neonatal blood is associated with birthweight at 914 sites, with a difference in birthweight ranging from −183 to 178 grams per 10% increase in methylation (P Bonferroni < 1.06 x 10 −7 ). In additional analyses in 7,278 participants, <1.3% of birthweight-associated differential methylation is also observed in childhood and adolescence, but not adulthood. Birthweight-related CpGs overlap with some Bonferroni-significant CpGs that were previously reported to be related to maternal smoking (55/914, p = 6.12 x 10 −74 ) and BMI in pregnancy (3/914, p = 1.13x10 −3 ), but not with those related to folate levels in pregnancy. Whether the associations that we observe are causal or explained by confounding or fetal growth influencing DNA methylation (i.e. reverse causality) requires further research.

Landscape composition overrides field level management effects on maize stemborer control in Ethiopia
Kebede, Yodit ; Bianchi, Felix J.J.A. ; Baudron, Frédéric ; Tittonell, Pablo - \ 2019
Agriculture, Ecosystems and Environment 279 (2019). - ISSN 0167-8809 - p. 65 - 73.
African ecosystem - Busseola Fusca - Landscape ecology - Lepidoptera (Noctuidae)

Lepidopteran stemborers are a serious pest of maize in Africa. While farmers have adopted cultural control practices at the field scale, it is not clear how these practices affect stemborer infestation levels and how their efficacy is influenced by landscape context. The aim of this 3-year study was to assess the effect of field and landscape factors on maize stemborer infestation levels and maize productivity. Maize infestation levels, yield and biomass production were assessed in 33 farmer fields managed according to local practices. When considering field level factors only, plant density was positively related to stemborer infestation level. During high infestation events, length of tunnelling was positively associated with planting date and negatively with the botanical diversity of hedges. However, the proportion of maize crop in the surrounding landscape was strongly and positively associated with length of tunnelling at 100, 500, 1000 and 1500 m radius, and overrode field level management factors when considered together. Maize grain yield was positively associated with plant density and soil phosphorus content, and not negatively associated with the length of tunnelling. Our findings highlight the need to consider a landscape approach for stemborer pest management, but also indicate that maize is tolerant to low and medium infestation levels of stemborers.

Hide and seek: management and landscape factors affecting maize stemborers Busseola fusca (Fuller) infestation levels in Ethiopia
Kebede, Yodit - \ 2019
Wageningen University. Promotor(en): P.A. Tittonell, co-promotor(en): F.J.J.A. Bianchi; Frédéric Baudron. - Wageningen : Wageningen University - ISBN 9789463435864 - 176
Effectiveness of a Program Intervention with Reduced-Iron Multiple Micronutrient Powders on Iron Status, Morbidity and Growth in Young Children in Ethiopia
Samuel, A. ; Brouwer, I.D. ; Feskens, E.J.M. ; Adish, A. ; Kebede, A. ; De-Regil, L.M. ; Osendarp, Saskia J.M. - \ 2018
Nutrients 10 (2018)10. - ISSN 2072-6643
Despite the potential for improving iron status and child growth in low- and middle-income settings, concerns on the safety of high iron dosages of Micronutrient Powders (MNP currently limit their applicability in programs. We examined the effectiveness and risks of an integrated complementary feeding program with low iron dose (6 mg/serving) MNP among 6–23-month-old Ethiopian children using a quasi-experimental study design comparing children from five intervention districts (n = 1172) to those from four matched non-intervention districts (n = 1137). Haemoglobin concentrations increased in intervention and decreased in non-intervention children (group-difference +3.17 g/L), but without improvement in iron stores. Intervention children were 2.31 times more likely to have diarrhoea and 2.08 times more likely to have common cold and flu, but these differences decreased towards the end of the intervention. At end line, intervention children had higher mean Height-for-Age Zscore (HAZ) and a 51% reduced odds of being stunted compared to non-intervention children. MNP with low iron dose, when provided combined with other Infant and Young Child Feeding (IYCF) interventions, marginally improved haemoglobin status and resulted in a remarkable improvement in linear growth in 6–23-month-old children. These benefits likely outweigh the relatively small increase in the risk of diarrhoea.
Unpacking the push-pull system : Assessing the contribution of companion crops along a gradient of landscape complexity
Kebede, Yodit ; Baudron, Frédéric ; Bianchi, Felix ; Tittonell, Pablo - \ 2018
Agriculture, Ecosystems and Environment 268 (2018). - ISSN 0167-8809 - p. 115 - 123.
Africa - Agroecology - Biocontrol - Busseola fusca (Fuller) - Ethiopia - Generalist predators - Habitat management - Landscape - Lepidoptera: Noctuidae

The push-pull system, a stimulo-deterrent cropping strategy consisting of intercropping cereals with herbaceous legumes and surrounded by fodder grasses, is presented as a promising crop diversification strategy for smallholder farmers in Africa as it may contribute to maize stemborer Busseola fusca (Fuller) suppression, while improving soil fertility and providing feed for livestock. The push-pull system has often been assessed at plot level and as a package (e.g., Maize + Desmodium + Napier grass). However, it is unclear how the system performs in different landscape settings or when companion crops are changed to better meet household needs. Here we evaluate the potential of the push-pull system to suppress maize stemborer infestations in three landscapes in the Rift Valley region of Ethiopia along a gradient of landscape complexity. Within each landscape, experimental plots were established on four representative smallholder farms. At each farm we used a split-plot factorial design with main plots surrounded or not by Napier grass, and subplots consisting of sole maize, maize-bean or maize-Desmodium. We assessed stemborer infestation level and maize grain and stover yields during two years, as well as natural enemies abundance and egg predation at two maize development stages in the second year. In the simple landscape, which was dominated by maize, all treatments had high stemborer infestation levels, irrespective of within-field crop diversity; the presence of Napier grass was associated with higher predator abundance, while egg predation rates were the highest in the maize-bean intercrop. In the intermediate complexity landscape, subplots with sole maize had higher stemborer infestation levels compared to maize-bean or maize-Desmodium. In the complex landscape, infestation levels were low in all treatments. However, none of these effects led to significant differences in maize grain and stover yields among treatments in any of the landscapes. The benefits of the push-pull system accrued from the companion crops (bean, Desmodium and Napier), rather than from stemborer suppression per se. Our findings highlight the importance of the surrounding landscape in mediating the performance of the push-pull system, provide new insights on the contribution of the different components of push-pull system and can guide the design of ecologically intensive agroecosystems.

Implications of changes in land cover and landscape structure for the biocontrol potential of stemborers in Ethiopia
Kebede, Yodit ; Bianchi, Felix ; Baudron, Frédéric ; Abraham, Kristin ; Valença, Anne de; Tittonell, Pablo - \ 2018
Biological Control 122 (2018). - ISSN 1049-9644 - p. 1 - 10.
Agroecosystem - Busseola fusca (Fuller) - Land use - Landscape ecology - Maize - Natural enemies
The land cover and structure of agricultural landscapes may influence the abundance and diversity of natural enemies of crop pests. However, these landscapes are continuously evolving due to changing land uses and agricultural practices. Here we assess changes in land use and landscape structure in a landscape in the Rift Valley region of Ethiopia, and explore the impact these changes are likely to have on the capacity of the landscape to support communities of natural enemies of maize stemborers Busseola fusca (Fuller). Land use and landscape structure were assessed in three periods over the last 30 years using focus group discussions with farmers and land use analysis through remote sensing. Natural enemies were sampled in maize fields adjacent to simple hedgerows, complex hedgerows, enset fields and khat fields at 1, 10 and 30 m using pitfalls and yellow pan traps in 2014 and 2015. The landscape analysis indicated that landscapes in the study area changed from maize dominated to more diverse small-scale and fragmented agroecosystems with a higher proportion of perennial crops. Maize fields adjacent to enset and complex hedgerows hosted significantly more predators (15.1 ± 9.8 and 22.3 ± 5.1 per trap at 1 m from the border, respectively) than maize fields adjacent to khat and simple hedgerows (7.2 ± 1.1 and 7.3 ± 1.7 per trap at 1 m from the border), and the effects of border type decreased with distance from the border. The abundance of parasitoids and parasitic flies were not influenced by border type. Our findings suggest that the changes in land use and landscape structure may have influenced the capacity of the landscape to support populations of natural enemies of stemborers in different ways. On the one hand smaller field sizes have resulted in more field borders that may support relatively high predator densities; on the other hand, the area of khat increased and the area of enset decreased, which may have a negative effect on predator densities. The overall outcome will depend on the interplay of these opposing effects.
Behavioural mechanisms and adaptation to climate change : Evidence from lab-in-the-field experiments in the upper Blue-Nile basin
Nigussie, Yalemzewd - \ 2017
Wageningen University. Promotor(en): Ekko van Ierland, co-promotor(en): Xueqin Zhu; B. Kebede. - Wageningen : Wageningen University - ISBN 9789463430425 - 144

The literature on climate change adaptation in developing countries focused on the socioeconomic and demographic determinants of adaptation decisions to climate change. Decision behavioural among others is thought to influence the path of innovation uptake related to climate change. We need to improve our understanding on the effect of individual and social preferences on decisions related to adaptation to climate change using field experimental approaches. We use field-in-the-lab experimental evidence combined with survey, personality test, and multi criteria analysis (MCA) for various categories of stakeholders. The data were generated from one of the hotspot areas in developing countries: the upper Blue-Nile basin, Ethiopia. The evidence covers the behavioural mechanisms ranging from individual and social preferences to personality traits. We also tried to understand how preferences of different types are formed by examining the effect of social and environmental factors on preference formation. Adaptation options are also examined from an “agro-ecosystem” perspective; bridging the gap that remained to understand why previous interventions failed to incorporate the issue of agro-ecosystem based adaptation planning. We adhered to understand the range of preferences in decision related to adaptation to climate change. These include individual subjective preferences like risk and rate of time preferences. Through a multiple price elicitation exercises, we find that farmers are highly risk averse and have a high rate of time preferences. Social preferences in terms of cooperative common pool resources (CPR) management were also a subject of analysis. We come with a conclusion that social norms, social roles and elderly role are significantly influencing the formation of cooperative local institutions to manage and use common pool resources. We also indicate that a sustainable management and use of commons can also improve the carbon sink functions in common agricultural, forest and water bodies enabling climate change mitigation possible in developing countries. We also try to put a binding frame by setting out a priority list of adaption options in the upper Blue-Nile basin. This was achieved through a participatory stakeholders’ evaluation of a list of options through a possibly conflicting criteria. The psychological dimensions of personality traits were also revisited and tried to understand how personality traits influence one’s information inquiry process through their effort to adapt to climate change. Accordingly, we found that the personality domain of individuals is highly correlated with their choice of information source and inquiry process. In general, we understand that climate change adaptation process is a dynamic complex phenomenon going beyond the analytical capacity of conventional economics making suit the application of behavioural and experimental economics.

Trajectories of farming systems and land use changes in Southern Ethiopia
Kebede, Y. ; Baudron, F. ; Bianchi, F.J.J.A. ; Abraham, Kristin ; Woyessa, K.L. ; Tittonell, P.A. ; Kooistra, L. - \ 2015
Direct and indirect impacts of climate and socio-economic change in Europe: a sensitivity analysis for key land- and water-based sectors
Kebede, A.S. ; Dunford, R. ; Mokrech, M. ; Rickebusch, S. - \ 2015
Climatic Change 128 (2015)3-4. - ISSN 0165-0009 - p. 261 - 277.
integrated assessment - adaptation - vulnerability - reduction - scenarios - scale - uk
Integrated cross-sectoral impact assessments facilitate a comprehensive understanding of interdependencies and potential synergies, conflicts, and trade-offs between sectors under changing conditions. This paper presents a sensitivity analysis of a European integrated assessment model, the CLIMSAVE integrated assessment platform (IAP). The IAP incorporates important cross-sectoral linkages between six key European land- and water-based sectors: agriculture, biodiversity, flooding, forests, urban, and water. Using the IAP, we investigate the direct and indirect implications of a wide range of climatic and socioeconomic drivers to identify: (1) those sectors and regions most sensitive to future changes, (2) the mechanisms and directions of sensitivity (direct/indirect and positive/negative), (3) the form and magnitudes of sensitivity (linear/non-linear and strong/weak/insignificant), and (4) the relative importance of the key drivers across sectors and regions. The results are complex. Most sectors are either directly or indirectly sensitive to a large number of drivers (more than 18 out of 24 drivers considered). Over twelve of these drivers have indirect impacts on biodiversity, forests, land use diversity, and water, while only four drivers have indirect effects on flooding. In contrast, for the urban sector all the drivers are direct. Moreover, most of the driver–indicator relationships are non-linear, and hence there is the potential for ‘surprises’. This highlights the importance of considering cross-sectoral interactions in future impact assessments. Such systematic analysis provides improved information for decision-makers to formulate appropriate adaptation policies to maximise benefits and minimise unintended consequences.
A multi-scale analysis (plot, farm, landscape) of the factors controlling maize stem borer (Busseola fusca) infestation in Southern Ethiopia. Towards a multi-scale push-pull approach
Kebede, Y. ; Baudron, F. ; Bianchi, F.J.J.A. ; Tittonell, P.A. - \ 2014
Conventional tree height-diameter relationships significantly overestimate aboveground carbon stocks in the Central Congo Basin
Kearsley, E. ; Haulleville, T. de; Hufkens, K. ; Kidimbu, A. ; Toirambe, B. ; Baert, G. ; Huygens, D. ; Kebede, Y. ; Defourny, P. ; Bogaert, J. ; Beeckman, H. ; Steppe, K. ; Boeckx, P. ; Verbeeck, H. - \ 2013
Nature Communications 4 (2013). - ISSN 2041-1723
tropical forests - landscape-scale - central-africa - live biomass - land-use - climate - deforestation - emissions - impacts - regions
Policies to reduce emissions from deforestation and forest degradation largely depend on accurate estimates of tropical forest carbon stocks. Here we present the first field-based carbon stock data for the Central Congo Basin in Yangambi, Democratic Republic of Congo. We find an average aboveground carbon stock of 162 +/- 20 Mg C ha(-1) for intact old-growth forest, which is significantly lower than stocks recorded in the outer regions of the Congo Basin. The best available tree height-diameter relationships derived for Central Africa do not render accurate canopy height estimates for our study area. Aboveground carbon stocks would be overestimated by 24% if these inaccurate relationships were used. The studied forests have a lower stature compared with forests in the outer regions of the basin, which confirms remotely sensed patterns. Additionally, we find an average soil carbon stock of 111 +/- 24 Mg C ha(-1), slightly influenced by the current land-use change.
Headspace fingerprinting as an untargeted approach to compare novel and traditional processing technologies: A case-study on orange juice pasteurisation
Vervoort, L. ; Grauwet, T. ; Kebede, T. ; Plancken, I. van der; Timmermans, R.A.H. ; Hendrickx, M. ; Loey, A. van - \ 2012
Food Chemistry 134 (2012)4. - ISSN 0308-8146 - p. 2303 - 2312.
electric-field processes - high-pressure - mild pasteurization - storage - flavor - quality - pectinesterase - inactivation - temperature - impact
As a rule, previous studies have generally addressed the comparison of novel and traditional processing technologies by a targeted approach, in the sense that only the impact on specific quality attributes is investigated. By contrast, this work focused on an untargeted strategy, in order to take into account unexpected and unintended effects of (novel) processing, and to possibly uncover unknown compounds resulting from alternative processing. The potential of headspace GC–MS fingerprinting was explored as a tool to compare the impact of thermal, high pressure (HP) and pulsed electric field (PEF) processing for mild pasteurisation of orange juice. This study demonstrated that when processing conditions are selected based on equivalent microbial safety, the impact of heat, HP and PEF pasteurisation on the volatile profile of orange juice can be considered comparable. During refrigerated storage, however, indirect impact differences were revealed, which were attributed to differences in degree of enzyme inactivation
New challenges in integrated water quality modelling
Rode, M. ; Arhonditsis, G. ; Balin, D. ; Kebede, T. ; Krysanova, V. ; Griensven, A. ; Zee, S.E.A.T.M. van der - \ 2010
Hydrological Processes 24 (2010)24. - ISSN 0885-6087 - p. 3447 - 3461.
chain monte-carlo - stream nitrogen attenuation - hyporheic zone - uncertainty analysis - sensitivity-analysis - catchment models - eutrophication models - bayesian calibration - nutrient losses - organic-matter
There is an increasing pressure for development of integrated water quality models that effectively couple catchment and in-stream biogeochemical processes. This need stems from increasing legislative requirements and emerging demands related to contemporary climate and land use changes. Modelling water quality and nutrient transport is challenging due a number of serious constraints associated with the input data as well as existing knowledge gaps related to the mathematical description of landscape and in-stream biogeochemical processes. The present paper summarizes the discussions held during the workshop on ‘Integrated water quality modelling: future demands and perspectives’ (Magdeburg, Germany, 23–24 June 2008). Our primary focus is placed on the current limitations and future challenges in water quality modelling. In particular, we evaluate the current state of integrated water quality modelling, we highlight major research needs to assess and reduce model uncertainties, and we examine opportunities to enhance model predictive capacity. To better account for the need of upscaling process knowledge, we advocate the adoption of combined process-oriented field and modelling studies at representative sites. In-stream nutrient metabolism investigations at the entire range of stream and river scales will enable the improvement of the mathematical representation of these processes and therefore the articulation level of coupled watershed-receiving waterbody models. Keeping the complexity of integrated water quality models in mind, the development of novel uncertainty analysis techniques for rigorous assessing parameter identification and model credibility is essential. In this regard, we recommend the use of Bayesian calibration frameworks that explicitly accommodate measurement errors, parameter uncertainties, and model structure errors. The Bayesian inference can be used to quantify the information the data contain about model inputs, to offer insights into the covariance structure among parameter estimates, to obtain predictions along with credible intervals for model outputs, and to effectively address the ‘change of support’ problems
What's on the menu? Options for strengthening the policy and regulatory framework for the exchange, use and conservation of animal genetic resources
Hiemstra, S.J. ; Drucker, A.G. ; Tvedt, M.W. ; Louwaars, N.P. ; Oldenbroek, J.K. ; Awgichew, K. ; Abegaz Kebede, S. ; Bhat, P.N. ; Silva Mariante, A. da - \ 2007
Animal Genetic Resources Information 41 (2007). - ISSN 1014-2339 - p. 65 - 74.
Back to the future : How Scenarios of future globalisation, biotechnology, disease and climate change can inform present animal genetic resources policy development
Drucker, A.G. ; Hiemstra, S.J. ; Louwaars, N.P. ; Oldenbroek, J.K. ; Tvedt, M.W. ; Hoffmann, I. ; Awgichew, K. ; Abegaz Kebede, S. ; Bhat, P.N. ; Silva Mariante, A. Da - \ 2007
Animal Genetic Resources Information 41 (2007). - ISSN 1014-2339 - p. 75 - 89.
Exchange, use and conservation of animal genetic resources : policy and regulatory options
Hiemstra, S.J. ; Drucker, A.G. ; Tvedt, M.W. ; Louwaars, N.P. ; Oldenbroek, J.K. ; Awgichew, K. ; Abegaz Kebede, S. ; Bhat, P.N. ; Silva Mariante, A. Da - \ 2006
Wageningen : Centre for Genetic Resources, the Netherlands (CGN) (CGN report 2006/06) - 82
genetische bronnen van diersoorten - rassen (dieren) - regelingen - veehouderij - beleid - dierveredeling - Nederland - animal genetic resources - breeds - regulations - livestock farming - policy - animal breeding - Netherlands
The aim of this report is to support informed and evidence-based decision-making by exploring a range of policy and regulatory options related to exchange, use and conservation of AnGR
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