A5060544139- Animal Nutrition and Physiology
- Meat and Animal Product Quality
- Livestock and Poultry Management
- Aquaculture Nutrition and Growth
- Sperm and Testicular Function
- Pharmaceutical Practices and Patient Outcomes
- Rabbits: Nutrition, Reproduction, Health
- Molecular Biology Techniques and Applications
- Identification and Quantification in Food
- Pharmaceutical studies and practices
- Animal Genetics and Reproduction
- Insect Utilization and Effects
- Agriculture and Rural Development Research
- Insect and Pesticide Research
- Biochemical effects in animals
- Pharmacovigilance and Adverse Drug Reactions
- Genetic and phenotypic traits in livestock
- Animal Virus Infections Studies
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Reproductive biology and impacts on aquatic species
- Drug-Induced Adverse Reactions
- Quality and Management Systems
- Invertebrate Immune Response Mechanisms
- Effects of Environmental Stressors on Livestock
- Parkinson's Disease and Spinal Disorders
Institut Technique de l'Aviculture
2014-2023
Biologie des Oiseaux et Aviculture
2017-2019
Université de Tours
2014-2018
Institut Français du Cheval et de l'Équitation
2014
Physiologie de la Reproduction et des Comportements
2011-2014
Centre National de la Recherche Scientifique
2014
Institut National de la Recherche Agronomique
2012
Hôpital Saint-Jacques
1992
Centre d'Investigation Clinique de Nantes
1990
White striping (WS) is an emerging quality defect with adverse consequences for the sensorial, technological, and nutritional qualities of breast meat in broiler chickens. The genetic determinism this little understood thus aim study presented here was to estimate parameters WS relation other traits economic importance such as body weight, carcass composition, technological experimental population consisting two divergent lines selected high (pHu + line) or low (pHu- ultimate pH (pHu)...
Variations in muscle glycogen storage are highly correlated with variations meat ultimate pH (pHu), a key factor for poultry quality. A total of two chicken lines were divergently selected on breast pHu to understand the biological basis quality (i.e., pHu– and pHu+ that characterized by 17% difference content). The effects this selection bird metabolism investigated quantifying metabolites high-resolution NMR (1H 31P) serum 1H NMR. 20 26 discriminating between identified orthogonal partial...
Chicken egg ovoinhibitor is a multidomain Kazal-type serine protease inhibitor with unknown function. Comparison of expression between different tissues indicated that highly expressed in the magnum and liver followed by uterus, which secrete white, yolk, eggshell precursors, respectively. The results also revealed increased during sexual maturation subsequent decrease mature hens. Ovoinhibitor was purified from yolk plasma nonfertilized eggs using two consecutive affinity chromatographies...
Abstract The processing ability and sensory quality of chicken breast meat are highly related to its ultimate pH (pHu), which is mainly determined by the amount glycogen in muscle at death. To unravel molecular mechanisms underlying pHu variations identify predictive biomarkers these traits, a transcriptome profiling analysis was performed using an Agilent custom 8 × 60 K microarray. gene expression patterns were studied two lines experimentally selected for high (pHu+) low (pHu−) values...
To better appreciate the dynamics of yolk proteins during embryonic development, we analyzed protein quantitative changes occurring in plasma at day lay and after 12 days incubation, by comparing unfertilized fertilized chicken eggs. Of 127 identified proteins, 69 showed relative abundance differences among conditions. Alpha-fetoprotein two uncharacterized (F1NHB8 F1NMM2) were for first time egg. After five (vitronectin, α-fetoprotein, similar to thrombin, apolipoprotein B, apovitellenin-1)...
Abstract Background Most egg yolk precursors are synthesized by the liver, secreted into blood and transferred oocytes, to provide nutrients bioactive molecules for avian embryo. Three hundred sixteen distinct proteins have been identified in yolk. These include 37 proteases antiproteases, which likely play a role formation of (vitellogenesis), as regulators protein metabolism. We used transcriptomic approach define protease antiprotease genes specifically expressed hen liver relation...
Abstract Background At sexual maturity, the liver of laying hens undergoes many metabolic changes to support vitellogenesis. In published transcriptomic approaches, hundreds genes were reported be overexpressed in and functional gene annotation using ontology tools have essentially revealed an enrichment lipid protein metabolisms. We reanalyzed some data from a previously article comparing 38-week old versus 10-week give more integrative view functions stimulated at maturity move beyond...
The understanding of the biological determinism meat ultimate pH, which is strongly related to muscle glycogen content, a key point for control integrity and quality in poultry. In present study, we took advantage unique model two broiler lines divergently selected pH pectoralis major (PM-pHu) order decipher genetic this trait. Two complementary approaches were used: detection selection signatures generated during first five generations genome-wide association study PM-pHu Sartorius pHu...
Egg yolk constitutes the main storage compartment of avian egg and first nutritional source that supports embryonic growth. Most components are synthesized by liver laying hens at sexual maturity secreted into blood to be further transferred ovarian oocyte (yolky follicle) receptor-mediated endocytosis. proteins as precursors must undergo proteolytic processing bioactive. It is assumed chicken cathepsin D, an aspartic protease, a key enzyme in this process. Very recently, novel namely...
Responses to changes in dietary Lys and other essential amino acid (AA) concentrations were evaluated 480 male female broilers originating from two lines divergently selected for high (pHu+) or low (pHu-) ultimate pH (pHu) of breast muscle. The genetic fed with grower isoenergetic diets differing both true digestible (control=10.2 g/kg experimental=7.0 g/kg) amounts AA calculated relation Lys, which sufficient the control diet excess experimental diet. There six repetitions per treatment....
Understanding of biology the avian male gamete is essential to improve conservation genetic resources and performances in farming. In this study, semen proteome main domestic species (Gallus gallus) evaluation molecular phenotype related sperm quality were investigated using GeLC-MS/MS approach label-free quantitative proteomic based on Spectral Counting (SC) extracted ion chromatograms (XIC) methods. Here we describe details peptide/protein inventory chicken ejaculated spermatozoa (SPZ)...
The technological, nutritional, and sensorial quality of breasts thighs with drumsticks turkey male female breeders was characterized by comparison growing turkeys from the Grademaker line (hybrid turkeys, n = 20 birds per sex physiological stage). breeder were slaughtered at 397 410 days age 10.42 32.67 kg body weight for females males, respectively. standard 75 103 5.89 13.48 differences observed between males on one hand other mainly induced in slaughter ages sexual dimorphism weight....
The marketing of poultry livers is only authorized as fresh, frozen, or deep-frozen. higher consumer demand for these products a short period time may lead to the frozen–thawed livers: this constitutes fraud. aim study was design method distinguishing from fresh livers. For this, spectral fingerprint liver proteins acquired using Matrix-Assisted Laser Dissociation Ionization-Time-Of-Flight mass spectrometry. spectra were analyzed chemometrics approach. First, principal component analysis...
Abstract The processing ability and sensory quality of chicken breast meat are highly related to its ultimate pH (pHu), which is mainly determined by the amount glycogen in muscle at death. To unravel molecular mechanisms underlying pHu variations identify predictive biomarkers these traits, a transcriptome profiling analysis was performed using an Agilent custom 8×60K microarray. gene expression patterns were studied two lines experimentally selected for high (pHu+) low (pHu-) values meat....