A5062614044- Animal Nutrition and Physiology
- Gut microbiota and health
- Livestock and Poultry Management
- Salmonella and Campylobacter epidemiology
- Genetic Mapping and Diversity in Plants and Animals
- Plant Pathogens and Fungal Diseases
- Plant Disease Resistance and Genetics
- Clostridium difficile and Clostridium perfringens research
- Fungal Plant Pathogen Control
- Genetic and phenotypic traits in livestock
- Probiotics and Fermented Foods
- Insect Utilization and Effects
- Genomics and Phylogenetic Studies
- Plant nutrient uptake and metabolism
- Plant Pathogenic Bacteria Studies
- Rabbits: Nutrition, Reproduction, Health
- Animal Behavior and Welfare Studies
- Plant Pathogens and Resistance
- Plant Molecular Biology Research
- Pharmacological Effects of Natural Compounds
- Legume Nitrogen Fixing Symbiosis
- Animal Genetics and Reproduction
- Moringa oleifera research and applications
- Enterobacteriaceae and Cronobacter Research
- Plant Physiology and Cultivation Studies
AgroParisTech
2022-2024
Université Paris-Saclay
2016-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2019-2024
Génétique Animale et Biologie Intégrative
2015-2024
Aarhus University
2021
Biologie des Oiseaux et Aviculture
2009-2013
Institut Jean-Pierre Bourgin
2013
Institut National de la Recherche Agronomique
2005-2012
Infectiologie Animale et Santé Publique
2012
Physiologie de la Reproduction et des Comportements
2006-2010
Abstract Posttranscriptional regulation of a variety mRNAs by small 21- to 24-nucleotide RNAs, notably the microRNAs (miRNAs), is emerging as novel developmental mechanism. In legumes like model Medicago truncatula, roots are able develop de novo meristem through symbiotic interaction with nitrogen-fixing rhizobia. We used deep sequencing RNAs from root apexes and nodules M. truncatula identify 100 candidate miRNAs encoded 265 hairpin precursors. New atypical precursor classes producing only...
The major scab resistance gene Vf, extensively used in apple breeding programs, was recently overcome by the new races 6 and 7 of fungal pathogen Venturia inaequalis. New, more durable, genes are needed programs. F 1 progeny derived from cross between partially resistant cv. Discovery hybrid ‘TN10-8’ were inoculated greenhouse with eight isolates V. inaequalis, including able to Vf. One gene, Vg, seven quantitative trait loci (QTL) identified for these isolates. Three QTL on linkage group...
Abstract The gut microbiota is known to play an important role in energy harvest and likely affect feed efficiency. In this study, we used 16S metabarcoding sequencing analyse the caecal of laying hens from feed-efficient non-efficient lines obtained by divergent selection for residual intake. two were fed either a commercial wheat-soybean based diet (CTR) or low-energy, high-fibre corn-sunflower (LE). analysis revealed significant line x interaction, highlighting distinct differences...
Dietary ingredient and nutrient composition may affect the efficacy of additives in broilers. Specific feed ingredients can represent dietary challenging conditions for broilers, resulting impaired performances health, which might be alleviated by probiotics postbiotics. We assessed effects a Lactobacilli probiotic (Pro) postbiotic (Post) when added to standard (SD) challenge (CD) diet. A completely randomised block study with two diets (SD, CD) three additive (Control, Pro Post) involving...
Abstract Besides being a metabolic fuel, carbohydrates play important roles in plant growth and development, stress responses, as signal molecules. We exploited natural variation Arabidopsis (Arabidopsis thaliana) to decipher the genetic architecture determining carbohydrate content. A quantitative trait locus (QTL) approach Bay-0 × Shahdara progeny grown two contrasting nitrogen environments led identification of 39 QTLs for starch, glucose, fructose, sucrose contents representing at least...
Vaccination is one of the most effective strategies for preventing infectious diseases but individual vaccine responses are highly heterogeneous. Host genetics and gut microbiota composition two likely drivers this heterogeneity. We studied 94 animals belonging to 4 lines laying hens: a White Leghorn experimental line genetically selected high antibody response against Newcastle Disease Virus (NDV) (ND3) its unselected control (CTR), 2 commercial (White (LEG) Rhode Island Red (RIR)). Animals...
Salmonella enterica serotypes Enteritidis and Typhimurium Campylobacter jejuni are responsible for most cases of food poisoning in Europe. These bacteria do not cause severe disease symptoms chicken, but they easily propagated by symptomless chicken carriers which cannot be isolated. This animal tolerance is detrimental to safety. In this particular case, increasing animal's resistance sufficient, since some animals considered as resistant able carry during several weeks without displaying...
The increasing cost of conventional feedstuffs has bolstered interest in genetic selection for digestive efficiency (DE), a component feed efficiency, assessed by apparent metabolisable energy corrected to zero nitrogen retention (AMEn). However, its measurement is time-consuming and constraining, relationship with metabolic poorly understood. To simplify this trait, we searched indirect biomarkers through an analysis the serum metabolome using nuclear magnetic resonance (1H NMR). A partial...
Abstract Background Salmonella Enteritidis (SE) is one of the major causes human foodborne intoxication resulting from consumption contaminated poultry products. Genetic selection animals that are more resistant to carriage and modulation gut microbiota two promising ways decrease individual carriage. The aims this study were identify main genetic microbial factors control level in chickens ( Gallus gallus ) under controlled experimental conditions. Two-hundred forty White Leghorn inbred...
Summary The ability of chickens to carry Salmonella without displaying disease symptoms is responsible for propagation in poultry stocks and subsequent human contamination through the consumption contaminated eggs or meat. selection animals more resistant carrier state might be a way decrease its transmission humans. Five QTL controlling variation resistance chicken F 2 progeny derived from White Leghorn inbred lines N 6 1 had been previously identified using selective genotyping approach....
Salmonella propagation by apparently healthy chickens could be decreased the selection and use of chicken lines that are more resistant to carrier state. Using a reduced set markers, this study investigates, for first time authors' knowledge, feasibility genomic approach resistance state in hen lines. In study, commercial laying were divergently selected at 2 different ages: young chicks adults peak lay. A total 600 birds typed with 831 informative SNP markers artificially infected...
Improving digestive efficiency is a major goal in poultry production, to reduce production costs, make possible the use of alternative feedstuffs and decrease volume manure produced. Since measuring difficult, identifying molecular markers associated with genes controlling this trait would be valuable tool for selection. Detection QTL (quantitative loci) was undertaken on 820 meat-type chickens F2 cross between D- D+ lines divergently selected low or high AMEn (apparent metabolizable energy...
Improving the digestive efficiency of broiler chickens (Gallus gallus) could reduce organic waste, increase use alternative feed not used for human consumption and impact in production costs. By selecting chicken lines divergently their efficiency, we showed previously that is under genetic control two resulting divergent lines, D+ (high or "digestibility +") D- (low -"), also differ abundance specific bacteria caeca. Here perform a more extensive census present microbiota 60 selected low...
Increasing feed efficiency of broiler chickens by selective breeding could lead to decreased cost and reduced environmental impact poultry production. At INRA, two chicken lines (D+/D-) were divergently selected for their digestive efficiency. Strong differences shown between both the anatomy histology tract, intestinal microbiota composition. In present study, we investigated whether this selection also had an effect on susceptibility colibacillosis, which is one main causes economic losses...
Individual differences in free-range chicken systems are important factors influencing how birds use the range (or not), even if individuals same environmental conditions. Here, we investigated various aspects of birds' behavioral and cognitive tendencies, including their optimism/pessimism, flexibility, sociability, exploration levels, associated with they may change over time (before after access). To achieve this, one hundred White Leghorn laying hen chicks underwent three distinct...
Salmonella propagation by apparently healthy chicken and subsequent food security concerns could be decreased the selection use of lines more resistant to carrier-state. In present study we applied first steps genomic methodology assess interest including genetic markers for evaluation hen infected with Enteritidis.We studied commercial laying divergently selected resistance carrier-state at two different ages. A total 600 animals were typed 1536 SNP artificially S. Enteritidis. Phenotypes...