A5086703820- Genetic and phenotypic traits in livestock
- Animal Nutrition and Physiology
- Meat and Animal Product Quality
- Animal Behavior and Welfare Studies
- Rabbits: Nutrition, Reproduction, Health
- Genetic Mapping and Diversity in Plants and Animals
- Adipose Tissue and Metabolism
- Agriculture and Rural Development Research
- Effects of Environmental Stressors on Livestock
- Animal Genetics and Reproduction
- Horticultural and Viticultural Research
- Agriculture Sustainability and Environmental Impact
- Livestock and Poultry Management
- Gut microbiota and health
- Ruminant Nutrition and Digestive Physiology
- Clostridium difficile and Clostridium perfringens research
- Reproductive Physiology in Livestock
- Agricultural Systems and Practices
- Muscle Physiology and Disorders
- Molecular Biology Techniques and Applications
- Muscle metabolism and nutrition
- Pharmacological Effects and Assays
- Insect Utilization and Effects
- Moringa oleifera research and applications
- Bee Products Chemical Analysis
Génétique Physiologie et Systèmes d'Elevage
2016-2025
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2009-2025
Université de Toulouse
2015-2025
École Nationale Vétérinaire de Toulouse
2015-2025
Institut National Polytechnique de Toulouse
2015-2023
Génétique Animale et Biologie Intégrative
2005-2015
École Nationale Supérieure Agronomique de Toulouse
2015
Physiologie Environnement et Génétique pour l'Animal et les Systèmes d'Elevage
2013
AgroParisTech
2011-2013
Institut National de la Recherche Agronomique
1997-2011
A total of 383 barrows and gilts from a French Large White experimental herd were slaughtered at 100 kg BW. Samples longissimus muscle taken to categorize myofibers according their contractile (I, IIA, IIB) metabolic (oxidative nonoxidative) properties. Myofiber percentages, cross-sectional areas (CSA), relative measured. Growth rate, carcass composition, chemical enzyme activities, meat quality traits also measured estimate phenotypic genetic correlations between these myofiber...
Two-dimensional electrophoresis was used to investigate sarcoplasmic protein expression in pig Semimembranosus muscles sampled 20 min after slaughter. Two groups (light and dark) of 12 animals were selected from 1000 pigs, based on meat L* values measured 36 h postmortem. Twenty-two proteins or fragments (p < 0.05) differentially expressed. Muscles leading darker had a more oxidative metabolism, indicated by abundant mitochondrial enzymes the respiratory chain, hemoglobin, chaperone...
In facing the challenge of sustainability, animal breeding provides option to improve robustness. search for new selection criteria related robustness, hypothalamic–pituitary–adrenocortical (HPA) axis is studied as a major neuroendocrine system involved in metabolic regulations and adaptive responses. Indeed, HPA activity strongly influenced by genetic factors acting at several levels axis. The adrenocorticotropic hormone (ACTH) stimulation test has long been used analyze interindividual...
We conducted a study to evaluate the effects of intramuscular fat levels on sensory characteristics duck breast meat. Combining genotypes (Muscovy, Pekin, and their crossbreed hinny mule ducks) feeding (overfeeding between 12 14 wk age vs. ad libitum feeding) enabled us obtain wide range lipid in muscle. The average values were 2.55 6.40 g per 100 Breast muscle from overfed ducks showed higher lower water than fed libitum. Muscle was also paler color exhibited greater yellowness cooking loss...
Improvement of feed efficiency can be achieved by genetic selection directly on to BW gain ratio or for alternative traits. In the present study, 2 different traits were explored in growing rabbit and their heritability correlations with recorded between weaning (30 d) 63 d age: i) residual intake (RFI), select animals having low ad libitum independently from production level, ii) ADG under restricted feeding (ADGR; a restriction level 80% compared control group), high growth rate despite...
To get insights into selection criteria for feed efficiency, 2 rabbit lines have been created: the ConsoResidual line was selected residual intake (RFI) with ad libitum feeding and ADGrestrict ADG under restricted (–20% of voluntary intake). The first objective this study to evaluate, after 9 generations selection, direct correlated responses on production traits in recorded during growth. Second, applying conditions used both plus control unselected (generation 0, G0) a × 3 factorial trial,...
Abstract Background Population stratification based on interindividual variability in gut microbiota composition has revealed the existence of several ecotypes named enterotypes humans and various animal species. Enterotypes are often associated with environmental factors including diet, but knowledge role host genetics remains scarce. Moreover, harbor functionalities likely varying abilities susceptibilities their host. Previously, we showed that under controlled conditions, 60-day-old pig...
Two-dimensional electrophoresis was used to compare Longissimus sarcoplasmic protein abundance between two groups (tough meat and tender meat), defined on the basis of extreme Warner−Bratzler shear force values measured cooked pork. Fourteen spots differed in quantity (P < 0.05) were identified. Adypocyte fatty acid binding acyl-CoA involved lipid traffic control gene expression regulating cell proliferation differentiation, Enoyl-CoA hydratase, aldose reductase triosephosphate isomerase...
Abstract Background Improving pork quality can be done by increasing intramuscular fat (IMF) content. This trait is influenced quantitative loci (QTL) sought out in different pig populations. Considering the high IMF content observed Duroc pig, it was appealing to determine whether favourable alleles at a major gene or QTL could found. The detection performed an experimental F2 × Large White population first segregation analysis, then mapping using additional molecular information. Results...
The objective of this study was to investigate the effects halothane (HAL) genotype, slaughter weight (SW), and HAL × SW interaction on compositional textural traits raw cooked pork. Pigs were bred exhibit one three genotypes (NN, Nn, nn) with otherwise equivalent genomes. nn reactors are known typically produce PSE pork, whereas NN pigs do not Piétrain Large White gilts boars, all verified Nn genotype (by DNA test), mated obtain F2 littermates genotypes. These slaughtered at either 101 ± 3...
Stochastic simulation was used to compare the efficiency of 3 pig breeding schemes based on either traditional genetic evaluation or genomic evaluation. The simulated population contained 1,050 female and 50 male animals. It selected for 10 yr a synthetic goal that included 2 traits with equal economic weights heritabilities 0.2 0.4. reference scheme, named BLUP-AM, phenotyping all candidates (13,770 animals/yr) Trait 1 relatives from 10% litters (270 BLUP-Animal Model evaluations. Under...
The objective of this study was to characterize correlated responses in carcass composition, bone mechanical properties, and meat quality indicators divergent selection for growth rate. Rabbits from low (LOW) or high (HIGH) lines divergently selected over five generations on 63-d BW a control group (CONT) were used. slaughtered at an average 2,306 ± 65 g, corresponding 63, 58, 52 d age LOW (n = 41), CONT 43), HIGH 44) groups, respectively. Postweaning ADG G:F increased (P < 0.001) the order...
A QTL for muscle hypertrophy has been identified in the Belgian Texel breed. population of F2 and backcross lambs created from crosses rams with Romanov ewes was studied. Effects on carcass traits development breed polygenes single were compared. In both cases, conformation muscularity improved. The polygenic environment improved mainly through changes skeletal frame shape. Segments shorter bone weight lower. Muscles more compact, shorter, thicker. affected development. Thickness muscles...
M. GEORGES,*, A. CLOP*, F. MARCQ*, H. TAKEDA*, D. PIROTTIN*, S. HIARD*, X. TORDOIR*, CAIMENT*, MEISH*, B. BIBɆ, J. BOUIX†, J.M. ELSEN†, EYCHENNE†, E. LAVILLE¶,†, C. LARZUL†, MILENKOVIC§, TOBIN‡, and AND CHARLIER* Unit of Animal Genomics, Department Production, Faculty Veterinary Medicine & CBIG, University Liège (B43), 4000-Liège, Belgium INRA-SAGA, Institut National de la Recherche Agronomique-Station d'Amélioration Génétique des Animaux, BP 52627-31326 Castanet-Tolosan CEDEX, France...
In the search for biological basis of robustness, this study aimed (i) at determination heritability cortisol response to ACTH in juvenile pigs, using restricted maximum likelihood methodology applied a multiple trait animal model, and (ii) relationships between basal stimulated levels with corticosteroid-binding globulin (CBG), IGF-I haptoglobin, all important players glucose metabolism production traits. At 6 weeks age, 298 intact male female piglets from 30 litters (30 dams boars) were...