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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

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

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

Salt intake from processed meat products: benefits, risks and evolving practices

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Gaëlle Petit et al., Comprehensive reviewsin food science and food safety, 2019, volum 18, 25 juillet, p. 1453-1473

Currently, there is major consumer concern about dietary salt intake worldwide. However, even with the development of contemporary preservation practices, sodium chloride is still essential in processed meat products. Despite a long history of use, salt is now seriously controversial in food due to health concerns that are mostly related to high blood pressure and cardiovascular risks. Changes in meat processing methods have reduced those potential risks, but different perceptions continue to shape how consumers and society view dietary salt. The current consumer demand for additive-free food, such as the clean-label movement, has renewed consumer willingness for naturalness in food products.

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

Alternative à la castration : vers une détection automatique des carcasses malodorantes ?

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Patrick Chevillon (Ifip) et Pierre-Jean Escriva (Uniporc Ouest), Réussir Porc / Tech Porc (FRA), 2019, n° 270, juillet-août, p. 6-8

L’Ifip et Uniporc Ouest s’intéressent de près à une méthode d’analyse en abattoir de scatol et d’androsténone, les deux principaux marqueurs d’odeurs de verrats reconnus scientifiquement.

PDF icon Patrick Chevillon et al., Réussir Porc / Tech Porc (FRA), 2019, n° 270, juillet-août, p. 6-8
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

Centralisée ou salle par salle : les critères pour bien choisir sa ventilation

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Yvonnick Rousselière, Réussir Porc / Tech Porc (FRA), 2019, n° 270, juillet-août, p. 30-32

Une ventilation centralisée reste plus onéreuse qu’une ventilation en salle par salle. Mais elle permet de répondre à de nouvelles attentes émergentes : environnement, économie d’énergie, lavage d’air…

PDF icon Yvonnick Rousselière, Réussir Porc / Tech Porc (FRA), 2019, n° 270, juillet-août, p. 30-32
2019

Combiner amélioration de la qualité de l’air et expression des comportements d’investigation chez le porc en croissance

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Valérie Couboulay, Colloque RMT Bien-être animal, Strasbourg, 1-2 juillet 2019, poster

Progresser sur la question du bien-être en élevage de porcs, dans une approche One-Welfare, est l’enjeu de cette expérimentation. Il s’agit d’améliorer la qualité de l’air au bénéfice de l’homme et des animaux par la technique du lisier flottant, tout en favorisant l’expression des comportements d’investigation des porcs : la mise en place d’une couche d’eau en fond de préfosse favorise la solubilisation de l’ammoniac et augmente le volume d’effluents ce qui pourrait permettre une bonne évacuation de la paille distribuée en brins courts, favorisant ainsi son utilisation en élevage.

PDF icon Valérie Couboulay, Colloque RMT Bien-être animal, Strasbourg, 1-2 juillet 2019, poster
2019

Comparison of fatty acid profiles of eight meat cuts in pigs commonly produced in France

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Martine Carlier, XX EuroFoodChem, 17-19 juin 2019, Porto, Portugal, poster

Fatty acid (FA) profiles have been carried out on 8 meat cuts from pigs commonly produced in France. Meat cuts have been prepared in slaughterhouses for their use in processed meat.

PDF icon Martine Carlier, XX EuroFoodChem, 17-19 juin 2019, Porto, Portugal, poster
2019

Reducing the dietary protein content of the weaning diet

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Didier Gaudré et al., ZeroZincSummit, 17-18 juin 2019, Copenhagen, Danemark, poster

Considering the interest of dietary protein reduction as a valuable alternative to the use of antibiotics and therapeutic zinc oxide at weaning, its consequences on pig performance during the few weeks after weaning were studied. The reduction of the digestible lysine content induced by diet protein reduction at weaning was observed in a fi rst trial. The second trial compared, three associations of raw concentrated protein materials in a context of a low protein and digestible lysine diet contents and a control diet in normal and degraded rearing conditions.

PDF icon Didier Gaudré et al., ZeroZincSummit, 17-18 juin 2019, Copenhagen, Danemark, poster
2019

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