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Impacts environnementaux des élevages porcins : quels déterminants et leviers d’action ?

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Visuels d'intervention présentés par Sandrine Espagnol, Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 10 pages

 

PDF icon Sandrine Espagnol, Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 10 pages
2019

Besoin et offre de financement des exploitations porcines : évaluation en 2019

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Visuels d'intervention présentés par Christine Roguet (Ifip) et Mickael Etheve (Blézat Consulting), Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 37 pages

PDF icon Christine Roguet (Ifip) et Mickael Etheve (Blézat Consulting), Space 2019, 10-13 sept 2019, Rennes (Matinales), 37 pages
2019

Deux projets pour l’analyse technico-économique à intégrer dans la ToolBox

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Visuels d'intervention présentés par Alexia Aubry, Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 6 pages

 

PDF icon Alexia Aubry, Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 6 pages
2019

Pig'Insight : données individuelles pour la détection précoce de pathologie

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Visuels d'intervention présentés par Michel Marcon, Journée "Fermes numériques", "êtes-vous technocompatibles" (capteurs, données, robotique, imagerie), jeudi 4 avril 2019, Locminé (France), 8 pages

PDF icon Michel Marcon, Journée "Fermes numériques", 4 avril 2019, 8 pages
2019

Alimentation durable et élevages porcins

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Visuels d'intervention par Sandrine Espagnol, Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 5 pages

PDF icon Sandrine Espagnol, Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 5 pages
2019

Development of a quantative PCR method coupled with PMA to quantify viable Salmonella spp. cells in the pork supply chain

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Sabine Jeuge et al., 13e SafePork, 26-29 août 2019, Berlin, Allemagne

In 2017, Salmonella spp. was implied in 30% of foodborne diseases in France (SPF, 2019). Few data on the contamination levels of Salmonella spp., are available along the pork supply chain. The protocol of the standard method (ISO/TS 6579-2:2012) is time-consuming and culture-based methods using chromogenic media are less efficient for matrices with high levels of back ground flora, and for recovering stressed cells. Along the food chain, the cells may be impacted by various stresses (e.g. chemical or thermal), which may lead to physiological changes and the emergence of viable but non-culturable cells (VBNCs).

PDF icon Sabine Jeuge et al., 13e SafePork, 26-29 août 2019, Berlin, Allemagne
2019

A Salmonella database to monitor and centralize regulatory own-checks results (CE) n° 2073/2005 obtained by slaugterhouse

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Sabine Itié-Hafez (Ministère de l'Agriculture) et Alain Le Roux (Ifip), 13e SafePork, 26-29 août 2019, Berlin, Allemagne, poster

Salmonellosis is a major cause of foodborne outbreaks caused by bacteria in Europe. In 2014, the European Commission reinforced the survey of this contaminant in the pig and pork industry by the competent authority. In this context, French General Directorate for Food required a new system to centralize regulatory own-checks results for Salmonella in pig carcasses.

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2019

Ecology of Salmonella and antimicrobial resistance in a pig slaughterbouse

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Arnaud Bridier (Anses) et al., 13e SafePork, 26-29 août 2019, Berlin, Allemagne

Salmonella: a public health issue
• 1st pathogen in terms of deaths related to contaminated food in France
• > 90 000 salmonellosis per year in Europe
• Multi resistance to antibiotics in the food chain
• Role of cleaning and disinfection (C&D) procedures in the selection of antibiotics resistant bacteria ?

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2019

Additive and dominance genomic parameters for backfat thickness in purebred and crossbred pigs

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Mohammadpanah M (Shahid Bahonar University of Kerman, Iran) et al., 70th Annual meeting of the European Federation of Animal science (EAAP), 26-30 août 2019, Ghent, Belgique, p. 291, poster

In pig crossbreeding programs, genetic evaluation has been based predominantly on purebred data accounting only for additive genetic effects, whereas improving crossbred performance is the ultimate goal. Theoretically, a combined crossbred and purebred selection method is advised if genetic correlation between purebred and crossbred populations differ from unity. If dominance effects are large enough, assortative mating strategies can enhance the total genetic values of the offspring. Hence, estimates of genetic parameters for purebreds and crossbreds are needed to assess the best selection crossbreeding scheme strategies. In this study, additive and dominance genetic variance components and additive and dominance genotypic correlations between a Piétrain and a Piétrain × Large White populations were estimated for backfat thickness (BFT). A total of 607 purebreds and 620 crossbred BFT records were analysed with a genotypic bivariate model that included hot carcass weight and inbreeding coefficient as covariates, an additive and a dominance genotypic effects, and a pen nested within batch random effect. Genetic parameters were estimated with EM-REML plus an additional iteration of AIREML to obtain the asymptotic standard deviations of the estimates. The additive genotypic correlation between purebreds and crossbreds was high, 0.82, indicating that the genetic progress attained in the purebreds can mostly be transferred to the crossbreds. Dominance genetic variance represented about 10% of the BFT phenotypic variance in both populations, suggesting that assortative matings could slightly enhance both purebred and crossbred performances. However, the underlying genetic mechanisms responsible for the dominance effects could differ between populations since dominance genotypic correlation was 0.49.

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2019

Impact of cleaning and disinfection procedures on microbial ecology and Salmonella antimicrobial resistance in a pig slaughterhouse

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Arnaud Bridier (Anses) et al., Scientific Reports, 2019, volume 9, n° 1, 10 septembre, 13 pages

To guarantee food safety, a better deciphering of ecology and adaptation strategies of bacterial pathogens such as Salmonella in food environments is crucial. The role of food processing conditions such as cleaning and disinfection procedures on antimicrobial resistance emergence should especially be investigated. In this work, the prevalence and antimicrobial resistance of Salmonella and the microbial ecology of associated surfaces communities were investigated in a pig slaughterhouse before and after cleaning and disinfection procedures. Salmonella were detected in 67% of samples and isolates characterization revealed the presence of 15 PFGE-patterns belonging to five serotypes: S.4,5,12:i:-, Rissen, Typhimurium, Infantis and Derby. Resistance to ampicillin, sulfamethoxazole, tetracycline and/or chloramphenicol was detected depending on serotypes. 16S rRNA-based bacterial diversity analyses showed that Salmonella surface associated communities were highly dominated by the Moraxellaceae family with a clear site-specific composition suggesting a persistent colonization of the pig slaughterhouse. Cleaning and disinfection procedures did not lead to a modification of Salmonella susceptibility to antimicrobials in this short-term study but they tended to significantly reduce bacterial diversity and favored some genera such as Rothia and Psychrobacter. Such data participate to the construction of a comprehensive view of Salmonella ecology and antimicrobial resistance emergence in food environments in relation with cleaning and disinfection procedures.

https://www.nature.com/articles/s41598-019-49464-8.pdf

2019

Modèle de prévision de la production porcine : à partir des données BDPORC

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Bérengère Lécuyer, Baromètre Porc (FRA), 2019, n° 500, septembre, synthèse du mois, p. 8

Les données BDPORC sur les mouvements de porcins ont été mobilisées pour modéliser et prédire la production de porcs charcutiers à un horizon de 1 à 5 mois. La part de la variabilité de la production de porcs charcutiers expliquée par le modèle est supérieure à 60 %. Les écarts entre la production réelle et la prévision sont sensibles pour certains mois mais plus réduits à l’échelle du trimestre.

PDF icon Bérengère Lécuyer, Baromètre Porc (FRA), 2019, n° 500, septembre, synthèse du mois, p. 8
2019

Réalité augmentée : un dispositif audio testé en maternité

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Alexia Aubry, Porc Mag (FRA), 2019, n° 545, septembre, p. 40

Des technologies innovantes peuvent aider les éleveurs à enregistrer plus efficacement les performances techniques de leurs porcs, indispensables au suivi et  l'évaluation de leurs résultats économiques.

2019

Toolbox de l'Ifip audite les bâtiments sur smartphone

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Michel Marcon, Réussir Porc/ Tech Porc (FRA), 2019, n° 271, septembre, p. 50-51

L’application Toolbox mise au point par l’Ifip propose quatre calculettes pour un auto-audit simple et rapide de la ventilation, du chauffage, des équipements et de la conduite.

PDF icon Michel Marcon, Réussir Porc/ Tech Porc (FRA), 2019, n° 271, septembre, p. 50-51
2019

Le led, l’éclairage économe en énergie

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Yvonnick Rousselière, Réussir Porc/Tech Porc (FRA), 2019, n° 271, septembre, p. 52-53

L’éclairage à leds gagne du terrain en production porcine, aussi bien en rénovation intérieure qu’en construction neuve.

PDF icon Yvonnick Rousselière, Réussir Porc/Tech Porc (FRA), 2019, n° 271, septembre, p. 52-53
2019

Drivers of (dis)liking: Systematic pairwise preference tests to reveal the relationship between boar taint and consumer acceptance

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Daniel Mörlain (University of Göttingen, Department of Animal Science) et al., 65th International Congress of Meat Science and Technology (ICOMST), 4-9 août 2019, Potsdam/Berlin, Allemagne, poster, p. 66-68

To improve animal welfare, in 2010 a European Declaration proposed a total ban on castration. Entire male pigs, however, can develop an off-odour, called boar taint. To prevent consumers complaints, a quantitative relationship of boar taint compounds (or intensity) with consumer dissatisfaction needs to be established. Pairwise preference tests (Prescott et al, 2005) were deemed a more straightforward approach than sequential monadic testing to establish rejection thresholds.

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2019

Influence of reduced levels or suppression of sodium nitrite on the growth of psychrotrophic Clostridium botulinum group II type B in cooked ham and frankfurters

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Sarah Lebrun (Université  de Liège) et al., 65th International Congress of Meat Science and Technology (ICOMST), 4-9 août 2019, Potsdam/Berlin, Allemagne, poster, p. 28

Sodium nitrite (NaNO2) is commonly used in meat products manufacturing for its antimicrobial effect on Clostridium botulinum, responsible of botulism (a deadly paralytic disease) by production of neurotoxins. Its use can nevertheless be associated with nitrosamines production, which are considered as carcinogenic substances (EFSA, The EFSA Journal, 2013, 14: 1-31). The objective of the present study was to compare the growth and toxinogenesis of psychrotrophic C. botulinum Group II (non-proteolytic) type B in cooked ham and in frankfurters in function of the NaNO2 incorporation rate (0, 30, 60 and 80 mg/kg) in order to evaluate the risk associated with this pathogen in two common cooked meat products.

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2019

Estimation of the tissue composition of bellies by a magnetic induction scanner

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Gérard Daumas et al., 65th International Congress of Meat Science and Technology (ICOMST), 4-9 août 2019, Potsdam/Berlin, Allemagne, poster

The objective of the study was to develop models and assess the estimation error of bellies composition using a magnetic induction device.
Magnetic induction, which principle takes advantage of the dielectric properties of tissues, was successfully tested by Swan et al. (2001) on bellies, hams and shoulders. Simoncini et al. (2012) estimated fat and muscle composition of hams with a more recent device.
In the following, we draw conclusions based on experimental data on the extent to which such a device can be used to grade bellies.

PDF icon Gérard Daumas et al., 65th ICOMST, 4-9 août 2019, Potsdam/Berlin, Allemagne, poster, PDF icon Gérard Daumas et al., 65th ICOMST, 4-9 août 2019, p. 517-518
2019

Attitudes of Eastern European consumers towards surgical castration and immunocastration of piglets

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Igor Tomasevic (University of Belgrade, Faculty of Agriculture, Belgrade, Serbia) et al., 65th International Congress of Meat Science and Technology (ICOMST), 4-9 août 2019, Potsdam/Berlin, Allemagne, p. 12-13, poster

Castration of male piglets is a common practice in pig husbandry performed to avoid boar taint, an offensive odour connected mainly with the presence of skatole and androstenone (Claus, Weiler, & Herzog, 1994) that can be perceived during the cooking and/or heating of pork from uncastrated male pigs. Taking into account relatively high animal welfare standards and discrepancy in public interest in farm animal welfare and ethical issues across European countries, generalisation of findings from Western European consumer studies to Eastern European countries would be quite questionable.

Evenmore so because a general insight into Eastern European meat consumers’ perceptions and behaviour is largely unavailable (Font-i-Furnols & Guerrero, 2014), except for a few studies published recently (Tomasevic et al., 2018). The aim of this research was to investigate the attitudes of Eastern European consumers regarding surgical and immuno-castration.

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2019

Use of mate allocation in pig crossbreeding schemes: a simulation study

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González-Diéguez D et al., 70th Annual meeting of the European Federation of Animal science (EAAP), 26-30 août 2019, Ghent, Belgique, visuels d'intervention

One of the main goals in a crossbreeding scheme is to improve the performance of crossbred population by exploiting heterosis and breed complementarity. Dominance is one of the likely genetic bases of heterosis and, nowadays, estimating dominance effects in genetic evaluations has become feasible in a genomic selection context. Mate allocation strategies that account for inbreeding and/or dominance can be of interest for maximizing the crossbred performance. The objective of this study was to simulate scenarios including or not mate allocation strategies in two-breed pig crossbreeding schemes. The different crossbreeding scenarios have been compared in terms of genetic gain (within-breed) and total genetic value in crossbred populations. The benchmark scenario is a crossbreeding scheme where within-line selection is performed on purebred genomic estimated breeding values and crossbreds come from random matings of the best purebreds. The other subsequent scenarios are conceived to evaluate the potential benefits of accounting for inbreeding, dominance and crossbred performances in the genetic evaluation model. Genomic mate allocation is a promising strategy to improve the crossbred performance.

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2019

Digestive efficiency is a heritable trait to further improve feed efficiency in pigs

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Vanille Déru (INRA/ France Génétique Porc) et al., 70th Annual meeting of the European Federation of Animal science (EAAP), 26-30 août 2019, Ghent, Belgique, visuels d'intervention

The use of diets with dietary fibres from alternative feedstuffs less digestible for pigs is a solution considered to limit the impact of increased feed costs on pig production. This study aimed at determining the impact of an alternative diet with fibres on individual digestive efficiency coefficients, and to estimate their heritabilities and genetic correlations with other production traits. A total of 480 Large White pigs were fed a high fibre diet (FD) and 547 of their sibs were fed a conventional diet (CO). For each animal, digestibility coefficients (DC) of energy, organic matter, and nitrogen were predicted from faeces samples analysed with near infrared spectrophotometry.

Individual daily feed intake (DFI), average daily gain (ADG), feed conversion ratio (FCR) were recorded as well as lean mean percentage (LMP), carcass yield (CY) and meat quality traits. The FD pigs had significantly lower DC than CO pigs (-5 to 6 points). The DC were moderately to highly heritable, with heritabilities ranging from 0.41±0.14 to 0.50±0.15 in CO, and from 0.62±0.17 to 0.70±0.17 in FD. Genetic correlations between DC and ADG (from -0.65 to -0.52), FCR (from -0.75 to -0.33), and DFI (from -0.83 to -0.57) were high and negative in both diets. The DC were slightly unfavourably correlated with CY (from -0.24 to -0.11) and favourably correlated with LMP (from 0.03 to 0.29). Genetic correlations were generally unfavourable with meat quality traits (from -0.75 to 0.09). Genetic correlations of DC between diets were close to 1, so no interaction between feed and genetics could be evidenced for these traits. To conclude, DC measured in farm conditions are interesting criteria for selection to account for animal digestive capacity, due to moderate to high heritabilities and high genetic correlations with FCR.

However, according to these first results, it would have to be selected together with carcass yield and meat quality to avoid adverse genetic trends on the latter traits.

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2019

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