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40èmes Journées de la Recherche Porcine 5 et 6 février 2008

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Pour les 40 ans du congrès, tous les textes en format PDF publiés depuis 1969 dans les recueils des JRP, ont été mis en ligne sur le site www.journeesrecherche-porcine.com et sont accessibles à tous, par année et session thématique.

Les prochaines Journées de la Recherche Porcine se tiendront à nouveau à Paris les 3 et 4 février 2009.
PDF icon 40èmes Journées de la Recherche Porcine 5 et 6 février 2008
2008

80% des protéines dans les aliments porcs sont françaises

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Cécile Cordier, Réussir Porc/ Tech Porc (FRA), 2020, n° 277, avril, p. 28-29

Les coproduits et les grains de céréales produits en France constituent l’essentiel des apports protéiques dans les rations de nos porcs, selon les travaux du GIS avenir élevages.

PDF icon Cécile Cordier, Réussir Porc/ Tech Porc (FRA), 2020, n° 277, avril, p. 28-29
2020

? cual es la importancia real de las enfermedades en el coste de produccion ?

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2007

A 5 year restrospective analysis of the rate of mount refusals among AI-boars

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Refusals to mount or the ejaculate disturb the management of AI centers, and repeated events may compromise productivity or boar longevity.
2012

A co-elaborative tool to assess growing pigs welfare

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Valérie Courboulay et al., 7th International conference on the assessment of animal welfare at farm and group level (WAFL) 5-8 septembre 2017, De ReeHost-Ede, Pays-Bas, poster

Welfare assessment systems are mainly used by external auditors. Better commitment could be achieved if farmers could assess the welfare of their pigs and act to improve it. The French Interprofessional Pork Council is thus developping a project to build an animal welfare assessment tool with and for the farmers.

PDF icon Valérie Courboulay et al., WAFL 2017, 5-8 septembre 2017, De ReeHost - Ede, Pays-Bas
2017

A comparison of vitality and growth performance before weaning of crossbred piglets obtained from Piétrain or crossbred Large White x Piétrain boars and Large White x Landrace sows

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PDF icon A comparison of vitality and growth performance before weaning of crossbred piglets obtained from Piétrain or crossbred Large White x Piétrain boars and Large White x Landrace sows
2007

A dynamic model of ammonia emission and concentration in fattening pig buildings

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visuel d'intervention / workshop
PDF icon A dynamic model of ammonia emission and concentration in fattening pig buildings
2012

A dynamic model of ammonia emission and concentration in fattening pig buildings

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The control of gas emissions from livestock buildings, especially ammonia, is important to limit the environmental impact, which depends primarily on the total emission, and to improve the welfare and health of the animals and the stockmen, which is affected by the concentration in the air. Modelling is an essential tool for a global approach of the different processes involved in the emissions.
PDF icon A dynamic model of ammonia emission and concentration in fattening pig buildings
2007

A field recombinant strain derived from two type 1 porcine reproductive and respiratory syndrome virus (PRRSV-1) modified live vaccines shows increased viremia and transmission in SPF pigs

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Julie Eclercy et al., Viruses, 2019, 23 mars, volume 11, n° 3, 13 pages

In Europe, modified live vaccines (MLV) are commonly used to control porcine reproductive and respiratory syndrome virus (PRRSV) infection. However, they have been associated with safety issues such as reversion to virulence induced by mutation and/or recombination. On a French pig farm, we identified a field recombinant strain derived from two PRRSV-1 MLV (MLV1). As a result, we aimed to evaluate its clinical, virological, and transmission parameters in comparison with both parental strains. Three groups with six pigs in each were inoculated with either one of the two MLV1s or with the recombinant strain; six contact pigs were then added into each inoculated group. The animals were monitored daily for 35 days post-inoculation (dpi) for clinical symptoms; blood samples and nasal swabs were collected twice a week. PRRS viral load in inoculated pigs of recombinant group was higher in serum, nasal swabs, and tonsils in comparison with both vaccine groups. The first viremic contact pig was detected as soon as 2 dpi in the recombinant group compared to 10 and 17 dpi for vaccine groups. Estimation of transmission parameters revealed fastest transmission and longest duration of infectiousness for recombinant group. Our in vivo study showed that the field recombinant strain derived from two MLV1s demonstrated high viremia, shedding and transmission capacities.

https://www.mdpi.com/1999-4915/11/3/296/pdf

2019

A genetic and functional analysis of innate and adaptive immunity in pigs

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PDF icon A genetic and functional analysis of innate and adaptive immunity in pigs
2010

A influencia das instalaçoes sobre o rendimento da engorda.<br /><br />Influence of installations on fattening yield.

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2007

A low cost database for the measurement of ammonia and greenhouse gas emissions of animal houses

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visuel d'intervention / workshop
PDF icon A low cost database for the measurement of ammonia and greenhouse gas emissions of animal houses
2012

A model to adapt pig buildings to climate

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Nathalie Quiniou (Ifip), Michel Marcon (Ifip) et Ludovic Brossard (Inrae), Pig Progress, 2021, volume 37, n° 2, avril, p. 52-54

Hotter summers and colder winters can both impair pig production. As a result, pig house designs which once used to be suitable are now being questioned. Adaptations in terms of barn structure, equipment and management need to be evaluated. In the PigSys project, IFIP and INRAE scientists developed a model-based tool for such multicriteria evaluation.

source : https://www.pigprogress.net/Home/General/2021/4/A-model-to-adapt-buildings-to-climate-721001E/

2021

A PBPK model to study the transfer of α-hexabromocyclododecane (α-HBCDD) to tissues of fast- and slow-growing broilers

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Bertrand Méda (Inrae) et al., Food Additives & Contaminants : Part A, 2020, volume 37, numéro 2, février, p. 316-331

A physiologically based pharmacokinetic (PBPK) model was developed to investigate the production-specific factors involved in the transfer of α-hexabromocyclododecane (α-HBCDD) to broiler meat. The model describes growth and lipid deposition in tissues of fast- (FG) and slow- (SG) growing broilers from hatching to slaughter and simulates the exposure through the ingestion of contaminated feed or expanded polystyrene insulation material. Growth parameters were obtained from the literature while parameters relative to uptake, distribution, and elimination of α-HBCDD were adjusted using results of a previous experiment involving broilers exposed through feed throughout the rearing period or allowed to depurate before slaughter. The model was used to compare the two main edible tissues, breast and leg meat, as well as skin, and to investigate the variability within strain. Between strains and within strain, α-HBCDD assimilation efficiency (AE) is higher when the animals are slaughtered young or heavy. However, increasing slaughter age will lower α-HBCDD concentration in tissues, due to dilution. Based on fresh weight, the concentration of α-HBCDD in breast muscles and skin tends to be lower in SG than in FG broilers (-30 to +10%), while it is 10% to 80% higher in leg muscles. Compared to breast muscles, consuming leg muscles would elicit an exposure 9 and 16 times higher in FG and SG broilers, respectively. The consumption of skin together with muscles would multiply the exposure by up to 36 times compared to breast muscle alone. In case of acute exposure, the α-HBCDD concentration in tissues increased sharply, all the more since the animals are lighter in weight, and then decreased rapidly. In FG broilers, dilution through growth contributed for up to 37%, 28% and 97% to the decontamination of breast muscles, leg muscles and skin, respectively, depending on the duration of depuration before slaughter.

https://www.tandfonline.com/doi/abs/10.1080/19440049.2019.1681596?needAccess=true#aHR0cHM6Ly93d3cudGFuZGZvbmxpbmUuY29tL2RvaS9wZGYvMTAuMTA4MC8xOTQ0MDA0OS4yMDE5LjE2ODE1OTY/bmVlZEFjY2Vzcz10cnVlQEBAMA==

2020

A simplified method to assess greenhouse gas and ammonia emission factors of fattening pigs reared on fully slatted floor

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Measurements of greenhouse gases and ammonia emissions can be performed by measuring continuously concentrations in rooms during the whole rearing period. Nevertheless, time and cost relative to this method limit the application to a large number of facilities and is not appropriate to assess the variability of emissions in relation to housing systems, farmer practices and climate. In order to border this variability and to identify mitigation strategies, simplified methods have to be developed.
PDF icon A simplified method to assess greenhouse gas and ammonia emission factors of fattening pigs reared on fully slatted floor
2010

A typology of sow herds according to weaning-to-first service

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An increase in weaning-to-first-service interval (WSI) is likely to disturb batch management. It may also depress subsequent performances such as litter size or farrowing rate (3). This study was designed to update data about WSI variability in French sow herds, and to characterize different herd profiles.
PDF icon A typology of sow herds according to weaning-to-first service
2008

A whole farm-model to simulate the environmental impacts of animal farming system : MELODIE

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The ex-ante environmental evaluation of farming system is an increasing demand to propose new evolutions of animal farming systems. Modelling is a promising approach to reduce the cost and the delay to study the relationship between farming management and risky emissions. The simulation of impacts of alternative decisions is essential to better analyze ex-ante changes in farm management, but is rarely considered in environmental models.
PDF icon A whole farm-model to simulate the environmental impacts of animal farming system : MELODIE
2009

Abaissement des protections à l'importation à l'OMC : quels risques pour le marché du porc ?

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A HongKong, dans le cadre des négociations commerciales de l’OMC, l’Union européenne a accepté de renoncer aux restitutions à l’exportation. Les négociations se poursuivront en 2006. La question de la protection à l’importation sera au centre des débats. L’Union européenne propose des baisses sensibles des droits d’entrée pour les produits agricoles. L’ITP a analysé la compétitivité des fournisseurs potentiels de l’UE, l’impact d’une moindre protection et ses enjeux pour le marché du porc.
PDF icon Abaissement des protections à l'importation à l'OMC : quels risques pour le marché du porc ?
2006

Abaissement des protections à l'importation par l'OMC : quels risques lemarché du porc en France

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Hervé Marouby, Claudie Gourmelen, Jan-Peter Van Ferneij, Michel Rieu, rapport d'études, décembre 2005, 105 pages

Document réservé Espace Pro, veuillez vous identifier
2005

Abaissement des protections à l'importation par l'OMC : quels risques pour le marché du porc en France ?

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L’étude vise à apprécier le potentiel de compétitivité des principaux concurrents de l’UE et à évaluer les possibilités d’importation et les effets sur le marché du porc et la production française. Premier exportateur mondial de viande porcine, l’UE est confrontée à une présence accrue des autres grands compétiteurs. A l’exportation, le Brésil très dépendant du marché russe, cherche à diversifier ses débouchés.
PDF icon Abaissement des protections à l'importation par l'OMC : quels risques pour le marché du porc en France ?
2005

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