The history of livestock started with the domestication of their wild ancestors: a restricted number of species allowed to be tamed and entered a symbiotic relationship with humans. In exchange for food, shelter and protection, they provided us with meat, eggs, hides, wool and draught power, thus contributing considerably to our economic and cultural development. Depending on the species, domestication took place in different areas and periods. After domestication, livestock spread over all inhabited regions of the earth, accompanying human migrations and becoming also trade objects. This required an adaptation to different climates and varying styles of husbandry and resulted in an enormous phenotypic diversity. Approximately 200 years ago, the situation started to change with the rise of the concept of breed. Animals were selected for the same visible characteristics, and crossing with different phenotypes was reduced. This resulted in the formation of different breeds, mostly genetically isolated from other populations. A few decades ago, selection pressure was increased again with intensive production focusing on a limited range of types and a subsequent loss of genetic ADVANCES IN FARM ANIMAL GENOMIC RESOURCES Images 1-3 taken from: http://www.photolibre.fr (retrieved in 2010), image 4 by Stéphane Joost. Cover image by Stéphane Joost, EPFL and http://www.photolibre.fr (retrieved in 2010). Topic Editors: Stéphane Joost, École Polytechnique Fédérale de Lausanne, Switzerland Michael W. Bruford, Cardiff University, UK Ino Curik, University of Zagreb, Croatia Juha Kantanen, Natural Resources Institute Finland, Finland Johannes A. Lenstra, Utrecht University, Netherlands Johann Sölkner, University of Natural Resources and Life Sciences Vienna, Austria Göran Andersson, Swedish University of Agricultural Sciences, Sweden Philippe V. Baret, Université catholique de Louvain, Belgium Nadine Buys, KU Leuven, Belgium Jutta Roosen, Technische Universität München, Germany Michèle Tixier-Boichard, INRA, France Paolo Ajmone Marsan, Università Cattolica del S. Cuore, Italy Frontiers in Genetics 3 January 2016 | Advances in Farm Animal Genomic Resources diversity. For short-term economic reasons, farmers have abandoned traditional breeds. As a consequence, during the 20th century, at least 28% of farm animal breeds became extinct, rare or endangered. The situation is alarming in developing countries, where native breeds adapted to local environments and diseases are being replaced by industrial breeds. In the most marginal areas, farm animals are considered to be essential for viable land use and, in the developing world, a major pathway out of poverty. Historic documentation from the period before the breed formation is scarce. Thus, reconstruction of the history of livestock populations depends on archaeological, archeo-zoological and DNA analysis of extant populations. Scientific research into genetic diversity takes advantage of the rapid advances in molecular genetics. Studies of mitochondrial DNA, microsatellite DNA profiling and Y-chromosomes have revealed details on the process of domestication, on the diversity retained by breeds and on relationships between breeds. However, we only see a small part of the genetic information and the advent of new technologies is most timely in order to answer many essential questions. High-throughput single-nucleotide polymorphism genotyping is about to be available for all major farm animal species. The recent development of sequencing techniques calls for new methods of data management and analysis and for new ideas for the extraction of information. To make sense of this information in practical conditions, integration of geo-environmental and socio-economic data are key elements. The study and management of farm animal genomic resources (FAnGR) is indeed a major multidisciplinary issue. The goal of the present Research Topic was to collect contributions of high scientific quality relevant to biodiversity management, and applying new methods to either new genomic and bioinformatics approaches for characterization of FAnGR, to the development of FAnGR conservation methods applied ex-situ and in-situ, to socio-economic aspects of FAnGR conservation, to transfer of lessons between wildlife and livestock biodiversity conservation, and to the contribution of FAnGR to a transition in agriculture (FAnGR and agro-ecology).
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Bibliographic reference
Joost, Stefan ; Bruford, Mickael ; Curik, Ino ; Baret, Philippe ; et. al. Advances in Farm Animal Genomic Resources. In: Frontiers Research Topics, Vol. janvier, p. 295 p. (2016)