A5057602948- Animal Nutrition and Physiology
- Livestock and Poultry Management
- Animal Behavior and Welfare Studies
- Agriculture and Rural Development Research
- Genetic and phenotypic traits in livestock
- Meat and Animal Product Quality
- Hypothalamic control of reproductive hormones
- Animal Genetics and Reproduction
- Animal Behavior and Reproduction
- Growth Hormone and Insulin-like Growth Factors
- Rabbits: Nutrition, Reproduction, Health
- Plant Reproductive Biology
- Effects of Environmental Stressors on Livestock
- Insect Utilization and Effects
- Stress Responses and Cortisol
- French Urban and Social Studies
- Aquaculture Nutrition and Growth
- Animal Vocal Communication and Behavior
- Horticultural and Viticultural Research
- Genetic Mapping and Diversity in Plants and Animals
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Reproductive Physiology in Livestock
- Healthcare and Venom Research
- Silkworms and Sericulture Research
- Bird parasitology and diseases
Syndicat des Sélectionneurs Avicoles et Aquacoles Français
2015-2024
Biologie des Oiseaux et Aviculture
2012-2024
Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2021-2024
Université de Tours
2024
Centre Val de Loire
2015-2022
Institut National de la Recherche Agronomique
1996-2020
Physiologie de la Reproduction et des Comportements
2000-2012
Institut National de la Recherche Agronomique du Niger
2006-2011
McGill University
1997-2003
Azabu University
2003
The present study was aimed at estimating the genetic variability between lines of breast and thigh meat quality (pH decline, color, drip loss, curing-cooking yield) by comparing a slow-growing French label-type line (SGL) fast-growing standard (FGL) chickens exposed to different preslaughter stress conditions. birds were slaughtered under optimal conditions or after exposure 2 h transport acute-heat (2 35 degrees C). Relationships sensitivity investigated measuring struggle during shackling...
AbstractThe conditions under which laying hens are kept remain a major animal welfare concern. It is one of the most intensive forms production and number animals involved very high. Widespread public debate has stimulated call for more friendly, alternative systems to barren conventional cages. Directive 1999/74/EC encouraged technical changes in current systems. Not only have traditional cages been modified (so-called 'enriched cages'), but also new (e.g. aviaries) developed. There an...
1. The aim of this study was to compare the behavioural and physiological responses hanging acute heat stress in three different chicken breeds. Chicks were obtained from a slow-growing French 'Label Rouge' line (SGL), fast-growing standard (FGL) heavy (HL). SGL, FGL HL birds slaughtered at their respective market ages 12, 6 weeks, an attempt achieve similar body weights. Before stunning, either shackled by legs on moving for 2 min (shackling stress: SH) or placed room 35°C 60% humidity 3·5...
Under current practices, broiler parent stock (broiler breeders) encounter several welfare problems, such as feed restriction and injury during mating. Intensive selection for production traits, especially growth rate, is associated with increased nutritious requirement thus consumption, but also reproductive dysfunctions decreased sexual activity in breeders. A resulting serious problem the subsequent severe which applied rearing, order to prevent health problems achieve better egg...
European duck meat production is based on the use of Pekin, Muscovy and Mule genotypes that vary in their behavioural physiological characteristics. Furthermore, large differences exist housing management conditions. The aim this review to discuss welfare these different typical husbandry systems, focusing ducks kept for production. Firstly, factors can affect welfare, such as stocking density group size, access straw, an outdoor run, or open water, are described. Secondly, problems feather...
Individual phenotypic characteristics of many species are influenced by non-genetic maternal effects. Female birds can influence the development their offspring before birth via yolk steroid content eggs. We investigated this prenatal effect analysing laying females' social environment on eggs' hormonal and offspring's development. Social instability was applied to groups Japanese quail females. evaluated impact procedure females, levels general chicks. Agonistic interactions were more...
Rainbow trout is a significant fish farming species under temperate climates. Female reproduction traits play an important role in the economy of breeding companies with sale fertilized eggs. The objectives this study are threefold: to estimate genetic parameters female traits, determine architecture these by identification quantitative trait loci (QTL), and assess expected efficiency pedigree-based selection (BLUP) or genomic for traits.
On-going climate change will drastically modify agriculture in the future, with a need for more sustainable systems, particular regarding animal production. In this context, genetic diversity is key factor adaptation to new conditions: local breeds likely harbor unique adaptive features and represent component of reach resilience. However, often suffer from small population sizes, which puts these valuable resources at risk extinction. chickens, management programs were initiated few decades...
Recently, the French National Institute for Agricultural Research appointed an expert committee to review issue of pain in food-producing farm animals. To minimise pain, authors developed a '3S' approach accounting 'Suppress, Substitute and Soothe' by analogy with '3Rs' 'Reduction, Refinement Replacement' applied context animal experimentation. Thus, when addressing matter following steps solutions could be assessed, light their feasibility (technical constraints, logistics regulations),...
Abstract The helmeted guinea fowl Numida meleagris belongs to the order Galliformes. Its natural range includes a large part of sub‐Saharan Africa, from Senegal Eritrea and Chad South Africa. Archaeozoological artistic evidence suggest domestication this species may have occurred about 2,000 years BP in Mali Sudan primarily as food resource, although villagers also benefit its capacity give loud alarm calls case danger, ability consume parasites such ticks hunt snakes, thus suggesting...
The primary sequence of the prolactin receptor (PRL-R) in turkeys was deduced from a cDNA clone isolated kidney library and polymerase chain reaction (PCR) product. open reading frame turkey PRL-R (tPRL-R) predicted an 831-amino acid protein composed leader peptide, extracellular domain, single transmembrane intracellular domain. domain contained two homologous repeat units with 63% amino identity to each other. Each unit all conserved cysteine pairs WSXWS motif found mammalian PRL-Rs. A...
This study was conducted to evaluate the effect of early rearing conditions on physiological, haematological and immunological responses relevant adaptation long-term stress in white Leghorn hens with intact beaks housed furnished cages (FC) or conventional (CC) during laying period. Pullets were cage reared (CR) litter floor (FR). From 16 76 weeks age, FC (eight per cage) CC (three cage). As measures at end period, adrenal reactivity quantified by assessing corticosterone...
Summary A quantitative trait loci (QTL) study was undertaken to identify genome regions involved in the control of fearfulness Japanese quail ( Coturnix japonica ). An F2 cross made between two lines divergently selected over 29 generations on duration tonic immobility (DTI), a catatonic‐like state reduced responsiveness stressful stimulation. total 1065 animals were measured for logarithm DTI (LOGTI), number inductions (NI) necessary induce reaction, open‐field behaviour including locomotor...
Summary Breed risk status assessment methods are key components of country-based early warning and response systems. In this study, a multi-indicator method was developed to assess the livestock populations. Six indicators were used: (i) current number breeding females; (ii) change in females over last 5 years or generations (depending on species); (iii) percentage cross-breeding; (iv) effective population size; (v) breeders organization technical support; (vi) socio-economic context. To...
1. The influence of acute stress before slaughter on muscle and meat quality was studied in adult male quail from lines divergently selected for long (LTI) or short (STI) duration tonic immobility (TI) the unselected (C) control line. 2. When subjected to stress, birds TI line responded differently those low fear lines. LTI exhibited: a higher plasma creatine kinase smaller increase corticosterone levels, pHu drip loss values breast associated with no differences L*a*b* colour values;...
Difference in adaptability responses to stress has been observed amongst bird species, strains, and individuals. Components of the HPA axis, one internal systems involved homeostasis re-establishment following stress, could play a role this variability responses. The aim present study was 1) identify genes regulation adrenal activity ACTH stimulation 2) examine differentially expressed individuals with high low plasma corticosterone response treatment. Analysis 21 K poultry oligo microarrays...