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Modeling the Transmission of Vibrio aestuarianus in Pacific Oysters Using Experimental Infection Data ArchiMer
Lupo, Coralie; Travers, Marie-agnes; Tourbiez, Delphine; Barthélémy, Clement; Beaunée, Gaël; Ezanno, Pauline.
Vibrio aestuarianus is a bacterium related to mortality outbreaks in Pacific oysters, Crassostrea gigas, in France, Ireland, and Scotland since 2011. Knowledge about its transmission dynamics is still lacking, impairing guidance to prevent and control the related disease spread. Mathematical modeling is a relevant approach to better understand the determinants of a disease and predict its dynamics in imperfectly observed pathosystems. We developed here the first marine epidemiological model to estimate the key parameters of V. aestuarianus infection at a local scale in a small and closed oyster population under controlled laboratory conditions. Using a compartmental model accounting for free-living bacteria in seawater, we predicted the infection dynamics...
Tipo: Text Palavras-chave: Marine epidemiology; Parameter estimation; Compartmental model; ABC method; Global sensitivity analysis; Basic reproduction number R-0; Crassostrea gigas; Oyster mortality.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00495/60652/64148.pdf
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Review: Towards the agroecological management of ruminants, pigs and poultry through the development of sustainable breeding programmes. II. Breeding strategies Organic Eprints
Phocas, F.; Belloc, Catherine; Bidanel, J.; Delaby, Luc; Dourmad, J. Y.; Dumont, B.; Ezanno, Pauline; Fortun-Lamothe, L.; Foucras, G.; Frappat, Brigitte; Gonzalez-Garcia, E.; Hazard, D.; Larzul, C.; Lubac, S.; Mignon-Grasteau, S.; Moreno, C. R.; Tixier-Boichard, M.; Brochard, M..
Agroecology uses ecological processes and local resources rather than chemical inputs to develop productive and resilient livestock and crop production systems. In this context, breeding innovations are necessary to obtain animals that are both productive and adapted to a broad range of local contexts and diversity of systems. Breeding strategies to promote agroecological systems are similar for different animal species. However, current practices differ regarding the breeding of ruminants, pigs and poultry. Ruminant breeding is still an open system where farmers continue to choose their own breeds and strategies. Conversely, pig and poultry breeding is more or less the exclusive domain of international breeding companies which supply farmers with hybrid...
Tipo: Journal paper Palavras-chave: Dairy cattle; Farming Systems; Beef cattle; Breeding and genetics; Sheep and goats; Pigs; Poultry.
Ano: 2016 URL: http://orgprints.org/33572/1/Phocas_Belloc_2016_Review_Animal.pdf
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Review: Towards the agroecological management of ruminants, pigs and poultry through the development of sustainable breeding programmes: I-selection goals and criteria Organic Eprints
Phocas, F.; Belloc, Catherine; Bidanel, J.; Delaby, Luc; Dourmad, J. Y.; Dumont, B.; Ezanno, Pauline; Fortun-Lamothe, L.; Foucras, G.; Frappat, Brigitte; Gonzalez-Garcia, E.; Hazard, D.; Larzul, C.; Lubac, S.; Mignon-Grasteau, S.; Moreno, C. R.; Tixier-Boichard, M.; Brochard, M..
Agroecology uses natural processes and local resources rather than chemical inputs to ensure production while limiting the environmental footprint of livestock and crop production systems. Selecting to achieve a maximization of target production criteria has long proved detrimental to fitness traits. However, since the 1990s, developments in animal breeding have also focussed on animal robustness by balancing production and functional traits within overall breeding goals. We discuss here how an agroecological perspective should further shift breeding goals towards functional traits rather than production traits. Breeding for robustness aims to promote individual adaptive capacities by considering diverse selection criteria which include reproduction,...
Tipo: Journal paper Palavras-chave: Dairy cattle; Farming Systems; Beef cattle; Breeding and genetics; Sheep and goats; Pigs; Poultry.
Ano: 2016 URL: http://orgprints.org/33566/1/Belloc16Animal1.pdf
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