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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, p. 415

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

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, p. 287

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

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
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

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

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

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

Application Smartphone : la ToolBox, une véritable "Boîte à outils"

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Michel Marcon, Porc Mag (FRA), 2019, n° 544, juillet-août, p. 27

L'Ifip propose aux éleveurs de porcs et à leurs techniciens une boîte à outils numériques utiles pour les aider à l'audit des bâtiments ou à la construction d'un élevage. Elle propose des solutions techniques pour le dimensionnement des bâtiments ou des diagnostics du chauffage et de la ventilation.

2019

Commerce mondial du porc : stabilité en 2018

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Elisa Husson, Baromètre Porc (FRA), 2019, n° 499, synthèse du mois, juillet-août, p. 8

En 2018, les relations commerciales entre les acteurs mondiaux ont été perturbées, impactant les échanges des produits du porc. La Chine, plus gros importateur, continue d’influer le commerce mondial du porc.

PDF icon Elisa Husson, Baromètre Porc (FRA), 2019, n° 499, synthèse du mois, juillet-août, p. 8
2019

Des contrastes régionaux entre l’élevage et l’abattage

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Bérengère Lécuyer, Réussir Porc / Tech Porc (FRA), 2019, n° 270, juillet-août, p. 14-15

Selon les régions françaises, les volumes abattus ne correspondent pas toujours au nombre de porcs produits. Cette situation refl ète des dynamiques de production et d’abattage contrastées.

PDF icon Bérengère Lécuyer, Réussir Porc / Tech Porc (FRA), 2019, n° 270, juillet-août, p. 14-15
2019

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