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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
Couverture du Porc par les chiffres

Le porc par les chiffres 2019-2020

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Les chiffres clés les plus récents des filières porcines dans le monde et l’UE (production, consommation, cheptel...) et de la filière porcine en France ; les données utiles pour se repérer tout au long de l’année et à avoir toujours sous la main : un outil indispensable à tous !

  • les échanges (import/export),
  • les élevages de porcs (cheptel/régions, commerce et signes de qualité),
  • les coûts des bâtiments, le secteur de l’aliment pour porc,
  • la sélection (truies, insémination, évolutions génétiques),
  • l’abattage (entreprises, classement des carcasses, paiement au TMP),
  • le secteur de la charcuterie (entreprises et produits),
  • la consommation des viandes et la distribution des produits du porc

sous forme de tableaux, cartes, graphiques. 

Un fichier powerpoint contenant les principaux graphiques complète la brochure ; les visuels présentant chaque maillon de la filière peuvent directement servir à la préparation d’interventions techniques. Il vous sera envoyé sur simple demande : ifip@ifip.asso.fr

Edition IFIP, 39 pages, 16 X 24

25,00 €
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

Validation of a pan-European computed tomography procedure for determining the new EU lean meat content of pigs

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Gérard Daumas (Ifip), Mathieu Monziols (Ifip) et Daiva Ribikauskiene (University of Applied Sciences of Lithuania), 65th International Congress of Meat Science and Technology (ICOMST), 4-9 août 2019, Potsdam/Berlin, Allemagne, poster

A new EU regulation on carcass classification applies from July 2018. The new reference to calibrate the pig classifi cation methods is a lean meat percentage based on total dissection of a half-carcass (LMPtd). Manual dissection can be replaced by an unbiased computed tomography (CT) procedure. 
Daumas and Monziols (2018) calibrated a simple, accurate and robust CT method in order to make it useful internationally and at least in Europe. A trial for approval of grading methods in Lithuania gave the opportunity to validate this CT procedure

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. 529-530
2019

Addition of vitamin E in pigs feed: could prevent cured-meat promotion of colon carcinogenesis in rats

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

Based on epidemiological studies, excessive consumption of cured meats induces a slight, but significant, increase in the risk of developing colorectal cancer [1]. Among the various hypotheses, recent studies have proposed the central role of heme iron in this positive association. Heme iron catalyzes the formation of genotoxic and cytotoxic nitroso-compound (NOCs) and lipid peroxidation end products (alkenals). Based on the important role of peroxidation and nitrosylation in the effect on cancer risk, our recent studies has made possible to propose a limitation of this effect via the enrichment of cured meat products with vitamin E during their manufacture [2]. In addition, supplementation in pig diet would also appear interesting to protect cured meat from the formation of carcinogenic substances, NOCs and alkenals [3]. In the present study we assess for the first time the effect of adding vitamin E in pig feed on preventing the promotion of colorectal carcinogenesis in rats fed a sausage-based diet from supplemented animals compare to sausage-based diet from control animals .

PDF icon Aurélie Promeyrat et al., 65th ICOMST, 4-9 août 2019, Potsdam/Berlin, Allemagne, poster, PDF icon Aurélie Promeyrat et al., 65th ICOMST, 4-9 août 2019, p. 859-860
2019

Addition of algae in pig feed: influence on technological quality and composition of meat and offal

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

Nowadays, algae progressively emerges in farms as a new generation of natural ingredients that improves immune function and animal health [1].
But, what are the effects of algae addition on meat and offal ? This study assesses the impact of pork feed supplemented in algae on meat quality, its composition, including nutritional compounds in offal.

PDF icon Aurélie Promeyrat et al., 65th ICOMST, 4-9 août 2019, Potsdam/Berlin, Allemagne, poster, PDF icon Aurélie Promeyrat et al., 65th ICOMST, 4-9 août 2019, p. 726-727
2019

Influencing wavelength comparison in pls models for the prediction of pork meat quality by vis-nirs

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Antoine Vautier, 65th International Congress of Meat Science and Technology (ICOMST), 4-9 août 2019, Potsdam/Berlin, Allemagne, poster

For the needs of a running project dealing with hyperspectral imaging, we wanted to define the spectral range specifications of the device being built. The reference data we expect to predict on pork meat cover a wide diversity of parameters: pH, drip loss, cooking yield and intramuscular fat. In previous studies focusing on VIS-NIRS (Visible and Near Infra Red Spectroscopy) prediction of the meat quality, we mainly used the 350-1800 nm spectral range of a Labspec4 spectrometer (ASDI). Because this spectral range seems to be too wide for a single ready-to-use hyperspectral camera, we decided to take another look on our previous NIRS studies and investigate which wavelength are the most predictive. The objective was to make a comparison of the influencing wavelength that are included in the PLS prediction equations, for each of the meat quality parameters we had studied.

PDF icon Antoine Vautier, 65th ICOMST, 4-9 août 2019, Potsdam/Berlin, Allemagne, poster, PDF icon Antoine Vautier, 65th ICOMST, 4-9 août 2019, p. 523-524
2019

Optiviande - Prédiction de la qualité technologique de la viande de poulet : apport de nouvelles approches de phénotypage et des analyses biologiques et génomiques à haut-débit

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M. Bourin et al., Innovations Agronomiques (FRA), 2019, volume 71, février, p. 323-337

Même si la viande est de plus en plus consommée sous forme élaborée, les consommateurs sont sensibles à la naturalité des produits. Cette tendance est largement prise en compte par les industriels de l’agroalimentaire qui cherchent à limiter l’ajout d’additifs (exhausteurs de goût ou agents texturants) ou de conservateurs (en particulier le sel). Ceci montre l’importance de maîtriser dès l’amont la qualité de la matière première destinée aux produits élaborés. Cette problématique touche particulièrement la viande de poulet, majoritairement consommée sous forme découpée ou transformée mais dont la qualité technologique est très variable. L’objectif du projet CASDAR OPTIVIANDE était de développer de nouveaux outils de phénotypage ainsi que des marqueurs biologiques ou génétiques pouvant être utilisés à des fins de sélection ou d’évaluation de l’impact des facteurs d’élevage. Les approches mises en œuvre concernaient l’utilisation de la spectrométrie dans le proche infrarouge (SPIR) ainsi que des analyses biologiques et génomiques à haut-débit. L’étude s’est appuyée sur un modèle animal original constitué de deux lignées de poulet sélectionnées de manière divergente sur le pH ultime du filet et dont les caractéristiques technologiques et sensorielles de la viande sont très différentes. La spectrométrie dans le proche infrarouge est rapide à mettre en œuvre et permet de prédire plusieurs critères de qualité technologique tel que le pH ultime, les pertes d’eau lors du stockage et la dureté après cuisson. Les analyses transcriptomique et métabolomique ont permis le développement de premiers modèles de prédiction basés sur un nombre restreint de métabolites (sanguins et musculaires) ou de transcrits musculaires. Au niveau génétique, les analyses ont permis d’identifier les principales régions contrôlant le pH ultime du filet et révéler plusieurs gènes d’intérêt. En conclusion, le projet a conduit à des avancées significatives pour la compréhension des mécanismes génétiques et physiologiques impliqués dans la mise en place des défauts de qualité chez le poulet. Il ouvre des perspectives d’application grâce au développement d’outils de prédiction et d’aide à la sélection dont la généricité devra être validée sur d’autres populations et en conditions de production. 

https://www6.inra.fr/ciag/content/download/6606/48428/file/Vol71-22-Bourin%20et%20al.pdf

ENG 

Predicting the technological quality of chicken meat : new approaches of phenotyping and high-throughput biological and genomic analyzes 

Even though meat is increasingly consumed in elaborated form, consumers are sensitive to naturality of the products. This trend is largely taken into account by agribusiness company seeking to reduce additives (flavor enhancers or texturizing agents) or preservatives (in particular salt). This shows the importance of upstream control of quality of the raw material for elaborated products. This issue particularly affects chicken meat, mostly consumed in cut or processed but whose technological quality is highly variable. The objective of the CASDAR OPTIVIANDE project was to develop new phenotyping tools and biological or genetic markers that could be used for selection or evaluation of the impact of breeding factors. The approaches implemented concerned the use of near-infrared spectrometry (NIRS) as well as high-throughput biological and genomic analyzes. The study was based on an original animal model composed of two chicken lines selected in a divergent manner on the ultimate pH of the filet and whose technological and sensory characteristics of meat were very different. Near-infrared spectrometry is fast to implement and makes it possible to predict several technological quality criteria such as ultimate pH, water loss during storage and hardness after cooking. Transcriptomic and metabolomics analyzes made it possible to develop first prediction models based on a limited number of metabolites (blood and muscle) or muscle transcripts. At the genetic level, analyzes made possible to identify the main regions controlling the ultimate pH of the filet and revealed several genes of interest. In conclusion, the project led to significant advances in understanding the genetic and physiological mechanisms involved in the establishment of quality defects in chicken. It opens perspectives of application thanks to the development of prediction tools for selection whose genericity will have to be validated on other populations and in conditions of production. 

https://www6.inra.fr/ciag/content/download/6606/48428/file/Vol71-22-Bourin%20et%20al.pdf

2019

Dissecting total genetic variance into additive and dominance components of purebred and crossbred pig traits

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Llibertat Tusell et al., Animal, 23 mai 2019, 11 pages

The partition of the total genetic variance into its additive and non-additive components can differ from trait to trait, and between purebred and crossbred populations. A quantification of these genetic variance components will determine the extent to which it would be of interest to account for dominance in genomic evaluations or to establish mate allocation strategies along different populations and traits. This study aims at assessing the contribution of the additive and dominance genomic variances to the phenotype expression of several purebred Piétrain and crossbred (Piétrain × Large White) pig performances. A total of 636 purebred and 720 crossbred male piglets were phenotyped for 22 traits that can be classified into six groups of traits: growth rate and feed efficiency, carcass composition, meat quality, behaviour, boar taint and puberty. Additive and dominance variances estimated in univariate genotypic models, including additive and dominance genotypic effects, and a genomic inbreeding covariate allowed to retrieve the additive and dominance single nucleotide polymorphism variances for purebred and crossbred performances. These estimated variances were used, together with the allelic frequencies of the parental populations, to obtain additive and dominance variances in terms of genetic breeding values and dominance deviations. Estimates of the Piétrain and Large White allelic contributions to the crossbred variance were of about the same magnitude in all the traits. Estimates of additive genetic variances were similar regardless of the inclusion of dominance. Some traits showed relevant amount of dominance genetic variance with respect to phenotypic variance in both populations (i.e. growth rate 8%, feed conversion ratio 9% to 12%, backfat thickness 14% to 12%, purebreds-crossbreds). Other traits showed higher amount in crossbreds (i.e. ham cut 8% to 13%, loin 7% to 16%, pH semimembranosus 13% to 18%, pH longissimus dorsi 9% to 14%, androstenone 5% to 13% and estradiol 6% to 11%, purebreds-crossbreds). It was not encountered a clear common pattern of dominance expression between groups of analysed traits and between populations. These estimates give initial hints regarding which traits could benefit from accounting for dominance for example to improve genomic estimated breeding value accuracy in genetic evaluations or to boost the total genetic value of progeny by means of assortative mating.

https://www.feed-a-gene.eu/sites/default/files/documents/tusell_2019_JAS_dissecting_total_genetic_variance_into_additive_and_dominance_components_of_purebred_and_crossbred_pig_traits.pdf

2019

Santé des animaux : les limites de la sélection génétique face aux maladies

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Marie-José Mercat, Réussir Porc/ Tech Porc (FRA), 2019, n° 270, juillet-août, p. 44-45

Des leviers génétiques existent pour sélectionner des animaux résistants à certains variants d’agents infectieux comme E. coli.

Mais une résistance globale aux maladies, ou simplement à tous les variants d’E. coli, semble illusoire.

PDF icon Marie-José Mercat, Réussir Porc/ Tech Porc (FRA), 2019, n° 270, juillet-août, p. 44-45
2019

Evolution of steroid concentrations in saliva from immature to pubertal gilts for the identification of biomarkers of gilts receptivity to boar effect

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Gylène Goudet et al., Livestock science, 2019 volume 228, octobre, p. 5-17

Estrus synchronization is necessary for management of gilt reproduction in pig farms. It is usually achieved by using synthetic progestagens, but there is increasing demand for non-hormonal alternative tools with the prospect of sustainability of livestock production. Moreover, in organic farms, synthetic hormones are not allowed. Before reaching puberty, gilts exhibit a “waiting period” during which external stimulations, such as boar exposure, could trigger and synchronize the first ovulation. However, practical non-invasive tools for detection of the “waiting period” in pig farms are lacking. During this period, estrone levels in urine are high, but urine sampling is difficult in group-housed females. Our objective was to identify among steroids potential biomarkers of this “waiting period” through saliva monitoring from immature to pubertal gilts using gas chromatography coupled to tandem mass spectrometry.

Starting between 144 to 147 days of age, six Large White gilts were submitted to ultrasound puberty diagnosis 3 times a week until first ovulation. Urine and saliva samples were collected to analyze weekly estrone and steroidome respectively, until puberty. Urinary estrone concentration significantly increased 2 weeks before first ovulation occurring between 182 and 192 days of age. The period with increasing estrone levels was considered as the “waiting period”. Steroidome analysis allowed identifying and quantifying 28 steroids in 500 µl of gilts saliva. Significant decrease of dehydroepiandrosterone and significant increase of 5α-dihydroprogesterone and 17β-estradiol were detected 2 weeks before puberty, suggesting that these steroids could be potential biomarkers of the “waiting period”.

These results show that painless sampling of saliva could be a non-invasive welfare-friendly tool for the identification of the physiological hormonal status of the gilts and possibly the optimal time for application of the boar effect, a solution to synchronize puberty without exogenous hormones.

2019

Les meilleures pratiques d’élevage de mâles entiers décryptées

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Patrick Chevillon, Réussir Porc / Tech Porc (FRA), 2019, n° 270, juillet-août, p. 38-40

La commission européenne veut accompagner l’arrêt de la castration chirurgicale en finançant un guide des meilleures pratiques de production de mâles entiers.

PDF icon Patrick Chevillon, Réussir Porc / Tech Porc (FRA), 2019, n° 270, juillet-août, p. 38-40
2019

Les tests olfactifs s’imposent en abattoir

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Patrick Chevillon, Réussir Porc / Tech Porc (FRA), 2019, n° 270, juillet-août, p. 40

La détection en abattoir des carcasses malodorantes par des méthodes sensorielles est, pour le moment, la seule à être utilisée en Europe.

PDF icon Patrick Chevillon, Réussir Porc / Tech Porc (FRA), 2019, n° 270, juillet-août, p. 40
2019

Transformer un nourrisseur en distributeur de paille

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Valérie Courboulay, Réussir Porc / Tech Porc (FRA), 2019, n° 270, juilllet/ août, p. 42

L’Ifip a testé à sa statione Romillé des dispositifs pour faciliter la distribution de paille à des porcs charcutiers sur caillebotis.

PDF icon Valérie Courboulay, Réussir Porc / Tech Porc (FRA), 2019, n° 270, juilllet/ août, p. 42
2019

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