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Genetic determinism of boar taint and relationship with growth traits, meat quality and lesions

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C. Dugué (Inrae) et al., Animal, 2020, février, 9 pages

Breeding entire males is an alternative to surgical castration to improve their welfare. However, entire males may have a major quality defect called boar taint. Boar taint is partly due to the presence of androstenone in fat. In this study, we estimated the genetic parameters between androstenone and production traits to evaluate the consequences of selection against boar taint for traits of interest. We focused on growth traits, meat quality, lesions, hormone levels and computerised tomography measurements in purebred Piétrain (P) or Piétrain cross Large White (X) entire males. The number of measured animals varied from 670 P and 734 X for hormones concentrations to 553 P and 645 X for computerised tomography measurements. Skin lesions were measured on live pigs shortly after mixing, at the end of the fattening period, and on carcasses. Heritabilities of traits measured by tomography ranged from low to high: femur density (P: 0.34, X: 0.69), loin eye area (P: 0.53, X: 0.88) and loin eye density (P: 0.12, X: 0.18). The mean number of lesions at each stage was lower in purebred pigs than in crossbreds (entering the fattening stage 4.01 in P and 4.68 in X; before slaughter 3.72 in P and 4.22 in X; on carcass 4.50 in P and 4.96 in X). We also observed a decrease in the average number of lesions between the two stages in live pigs. We found high genetic correlations between stages in purebred pigs (0.74 to 0.76) but low correlations (−0.30 to 0.29) in crossbred pigs. Selection aiming to decrease fat androstenone is feasible ( h2 = 0.57 in P and h2 = 0.71 in X). It would have overall positive effects on meat production and quality traits. Selection aiming to reduce plasma oestradiol would strongly reduce the level of fat androstenone (rg = 0.89 in P and rg = 0.84 in X). Selection against oestradiol is easier and less invasive since it would only require a blood sample rather than a fat biopsy in live animals.

https://www.cambridge.org/core/services/aop-cambridge-core/content/view/8B114317EA6ABC332DE746DF180ED846/S1751731120000105a.pdf/genetic_determinism_of_boar_taint_and_relationship_with_growth_traits_meat_quality_and_lesions.pdf

2020

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 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

Crise sanitaire de FPA en Chine : porc et protéines : équilibres de marchés bouleversés

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Jan-Peter Van Ferneij, Porc Mag (FRA), 2020, n° 549, février, p. 44-45

Fin 2019, Abcis* a conduit avec d'autres experts du marché chinois, une étude sur l'iimpact de l'épidémie de fièvre porcine africaine, qui sévit en Chine et en Asie du Sud-Ouest, sur des marchés mondiaux des protéines. Cette analyse de la filière porcine chinoise propose des scénarios d'évolution de la filière chinoise et des marchés internationaux du porc et des protéines.

 

*Abcis est une société de services créee par l'Ifip, l'Idele et l'Itavi.

2020

Baisse de consommation de porc : la hausse des prix exacerbe les tendances

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Valérie Diot, Baromètre Porc (FRA), 2020, n° 504, janvier, synthèse du mois, p. 8

Dans un contexte de sensibilité des consommateurs au prix et de mise en place de la loi EGalim, la hausse des prix du porc vient accélérer la déconsommation initiée dès 2015. Les catégories les plus innovantes semblent mieux résister. Ceci contribue à des reports de consommation vers des solutions plus économiques ou de substitutions qualitatives.

PDF icon Valérie Diot, Baromètre Porc (FRA), 2020, n° 504, janvier, synthèse du mois, p. 8
2020

Qu’attendent les Français sur les modes d’élevage du porc ?

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Visuels d'intervention présentés par Elsa Delanoue, sociologue (Ifip, Idele et Itavi) et al., à la 6ème Journée d’échanges de la filière porcine organisée par l’IFIP sur le thème : Evolutions des marchés et des attentes sociétales : quelles transitions dans les élevages et les filières ? Des attentes des marchés et de la société qui se diversifient, 3 décembre 2019, Paris

PDF icon Elsa Delanoue, sociologue (Ifip, Idele et Itavi) et al., à la 6ème Journée d’échanges
2019

Les marchés du porc français dans l’internationalisation et la montée en gamme

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Visuels d'intervention présentés par Boris Duflot, directeur du pôle Economie IFIP, à la 6ème Journée d’échanges de la filière porcine organisée par l’IFIP sur le thème : Evolutions des marchés et des attentes sociétales : quelles transitions dans les élevages et les filières ? Des attentes des marchés et de la société qui se diversifient, 3 décembre 2019, Paris

PDF icon Boris Duflot, directeur du pôle Economie IFIP, à la 6ème Journée d’échanges IFIP
2019

Panorama des études Ifip financées par FranceAgriMer pour le Pôle viandes et charcuteries de 2010 à 2018

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Panorama interactif des études Ifip financées par FranceAgriMer pour le Pôle viandes et charcuteries de 2010 à 2018.

Le document offre un accès facilité aux résultats de chaque étude par un lien direct à une fiche synthétique.

PDF icon etudes_ifip_franceagrimer_2019.pdf
2019

Panorama des études Ifip financées par Inaporc pour le Pôle viandes et charcuteries de 2010 à 2018

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Panorama interactif des études Ifip financées par Inaporc pour le Pôle viandes et charcuteries de 2010 à 2018.

Le document offre un accès facilité aux résultats de chaque étude par un lien direct à une fiche synthétique.

PDF icon etudes_ifip_inaporc_2019.pdf
2019

Pros and cons of alternatives to piglet castration: welfare, boar taint, and other meat quality traits

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Michel Bonneau et Ulrike Weiler,  Animals (Basel), 2019, novembre, volume 9, numéro 11, 12 pages

This paper reviews the pros and cons of various alternatives to the surgical castration of male piglets without pain relief. Castration is mostly motivated by the presence of boar taint in the meat from some entire male pigs. It results in pain during surgery and markedly increases feed costs and the fat content of the carcass. Raising entire male pigs avoids pain at castration, but animals can suffer from increased stress during the finishing period because of aggressive and mounting behavior. Feed efficiency and carcass quality are much better than in surgical castrates. The quality of meat from entire male pigs is lower because of boar taint, a reduced intramuscular fat content, and increased unsaturation of the fat. Immunocastration prevents boar taint, pain associated with surgery, and stress related to aggressive and mounting behavior. Feed efficiency and carcass quality are intermediate between surgical castrates and entire males. Meat quality is similar to surgical castrates. Anesthesia alone prevents pain during surgery, but not after, while analgesia alone mitigates pain after surgery, but not during it. With the currently available methods, the cost of combined anesthesia and analgesia is too high for conventional production systems in most countries.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6912452/pdf/animals-09-00884.pdf

2019

Les cartes du commerce mondial de viande de porc sont rebattues

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Jan-Peter Van Ferneij, Réussir Porc/Tech Porc (FRA), 2019, n° 272, octobre, p. 6-7

L’Union européenne dispose des meilleurs atouts pour approvisionner les marchés internationaux en viande de porc.

PDF icon Jan-Peter Van Ferneij, Réussir Porc/Tech Porc (FRA), 2019, n° 272, octobre, p. 6-7
2019

Consommation de viande de porc en Chine : revirement de tendances

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Valérie Diot, Baromètre Porc (FRA), 2019, n° 501, octobre, synthèse du mois, p. 8

Le porc est au coeur des habitudes alimentaires en Chine. Sous l’influence des évolutions socio-économiques, la hausse du niveau de vie et l’urbanisation, les consommateurs privilégiaient, jusqu’à il y a peu, une offre plus élaborée et de meilleure qualité. Face à la crise de la FPA, tel un retour aux fondamentaux, la question de la satisfaction de la demande en viande porcine, se pose à la Chine.

PDF icon Valérie Diot, Baromètre Porc (FRA), 2019, n° 501, octobre, synthèse du mois, p. 8
2019

Biopréservation et hautes pressions : des outils pour la maîtrise des dangers microbiologiques dans les aliments

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Hélène Simonin ( Univ. Bourgogne Franche-Comté, AgroSup Dijon) et al., IAA, revue des industries agro-alimentaires (FRA), 2019, mai-juin, 6 pages

L’utilisation d’additifs conservateurs est souvent nécessaire pour assurer la sécurité microbiologique des produits carnés réfrigérés faiblement acides. Le projet ANR BLac HP (2014-2019) a étudié une nouvelle stratégie de stabilisation des produits carnés réfrigérés pour assurer le contrôle des flores indésirables à la fois végétatives et sporulées. Grâce à une approche pluridisciplinaire, les travaux ont montré que la combinaison de la biopréservation par des bactéries lactiques et d’un traitement hautes pressions permettait d’assurer la qualité microbiologique de dés de jambon cuits à teneur réduite en nitrite pendant toute leur durée de vie. Le traitement permet de plus une qualité sensorielle optimale sans impact environnemental supplémentaire par rapport au procédé conventionnel. 

source  : http://www.revue-iaa.fr/revues/a-906/

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

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.

Document réservé Espace Pro, veuillez vous identifier
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

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 ?

Document réservé Espace Pro, veuillez vous identifier
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.

Document réservé Espace Pro, veuillez vous identifier
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.

Document réservé Espace Pro, veuillez vous identifier
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

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