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Consumer acceptance of minced meat patties from boars in four European countries

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Aluwé et al., Meat Science, 2018, vol. 137, mars, p. 235-243

A consumer study was performed in four EU countries to further clarify the acceptability of meat with boar taint. In Denmark, France, Italy and Poland, a total of 476 female consumers evaluated 8 meat patties from boars with varying levels of skatole (0.10–0.40 μg/g fat tissue) and androstenone (0.47–2.00  μg/g fat tissue), in a pair-wise comparison with patties from castrates. Boar meat patties were always less preferred than the castrate meat patties, regardless of the level of androstenone and skatole. Acceptability of the boar meat patties decreased with increasing skatole level. In samples with low skatole levels, higher levels of androstenone also reduced acceptability among androstenone sensitive consumers. No clear threshold levels for androstenone and skatole could be identified. Maps presenting the reduction in preference due to increasing levels of skatole and androstenone, and corrected for the general acceptance of the meat product were developed, taking into account androstenone sensitivity. Further work is needed, covering the whole range of androstenone and skatole levels found in entire male pigs and for a wider set of meat products.

2018

Un autodiagnostic en un coup d'oeil avec PorciSanté

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Réussir Porc - Tech Porc (FRA), 2018, n° 256, février-mars, p. 34-35, par Yvonnick Rousselière

PorciSanté est un outil d'autodiagnostic mis au point par l'Ifip pour comprendre le lien entre des interventions sur les animaux et leur santé. En un coup d'oeil, on peut faire un point rapide sur une situation et déterminer les mesures correctives les plus appropriées.

2018

Eupig récompense les meilleures pratiques européennes

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Réussir Porc - Tech Porc (FRA), 2018, n° 256, février-mars, p. 44-45, par Valérie Courboulay

Un grand prix est ouvert chaque année pour les filières porcines européennes désireuses de partager leurs meilleures pratiques sur quatre thématiques : la production porcine de précision, le bien-être animal, la qualité de la viande et le management de la santé.

2018

Initiatives et labels bien-être en Europe, Allemagne, Pays-Bas, Danemark

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Visuels d'intervention présentés, par Christine Roguet, 14e Journée Régionale Porc, le 21 novembre 2017, Pontivy (Bretagne, France), thème : le bien-être, enjeu de société

 

 

PDF icon Visuels d'intervention présentés, par Christine Roguet, 14e Journée Régionale Porc, le 21 novembre 2017, Pontivy
2018

La place de l'éleveur sur la question du bien-être animal

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Visuels d'intervention présentés, par Valérie Courboulay, 14e Journée Régionale Porc, le 21 novembre 2017, Pontivy (Bretagne, France), thème : du bien-être pour les animaux et les éleveurs

PDF icon Visuels d'intervention présentés, par Valérie Courboulay, 14e Journée Régionale Porc, le 21 novembre 2017, Pontivy
2018

Approvisionnement en protéines de l'UE : un défi de taille

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Baromètre Porc (FRA), 2018, n° 483, février, synthèse du mois, p. 8, par Hervé Marouby

L’Union européenne est le deuxième importateur mondial de graines de soja, derrière la Chine, et le premier de tourteau. Le déficit en protéines pour l’alimentation animale appelle le développement d’une offre locale de matières premières riches en protéines. Ce dernier reste soumis aux contraintes économiques et au réglage adéquat des politiques agricoles et environnementales.

PDF icon Baromètre Porc (FRA), 2018, n° 483, février, synthèse du mois, p. 8, par Hervé Marouby
2018

Environmental impacts of different innovative feeding strategies in pig and broiler farms

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Visuels d'intervention de Sandrine Espagnol et al., 68th Annual Meeting of the European Federation of Animal Science, Tallinn, Estonie, 28 août-01 septembre 2017, Session 11 : LFS efficiency : indicators and scales

PDF icon Sandrine Espagnol et al., 68th EAAP, Tallinn, Estonie, 28 août-01 septembre 2017, visuels d'intervention
2018

Elevage de précision : prototype 3D de la porcherie de demain

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Visuels d'intervention présentés par Michel Marcon (IFIP) et Frédéric Kergourlay (CRAB), à Fermes numériques, Agriculture de précision "Robotique & Données", 10 mars 2017, Plérin (France)

 

PDF icon Visuels d'intervention présentés par Michel Marcon (IFIP) et Frédéric Kergourlay (CRAB), le 10 mars 2017, Plérin
2018

Monitoring of the individual drinking behaviour of healthy weaned piglets and pregnant sows

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8e European Conference on Precision Livestock Farming (ECPLF), le 12-14 septembre 2017, Nantes, in : Precision Livestock Farming 17, 2017, par Yvonnick Rousselière, Anne Hémonic et Michel Marcon

Trials were conducted on the experimental station of Ifip in Romillé (Brittany, France) to assess the individual dinking behavior of healthy weaned piglets and pregnant sows. To collect this type of data, a specific connected drinker has been developed. It is composed of an antiwastage bowl drinker surrounded by shoulder partitions, a precision water meter (± 0.01 l for piglets and ± 0.1 l for sows) and a RFID (Radio Frequency IDentification) antenna to detect animals near the drinker thanks to the electronic and individual ear tag on each pig. Observations on animals have been made twice a week to evaluate their health status. This study only focuses on healthy animals. Weaned piglets were bred in pens of 19 animals. On average, the individual water consumption was 10.7% of body weight. Sows were bred in a dynamic group equipped with 6 connected drinkers and automatic feeders. On average, the daily water consumption was 8.2l/day (1.6l during the meal and 6.6l directly to bowl drinker). For the two types of animal, it exists an important inter and intra individual variability on the water consumption (more than 30%). Thus, working only on the health status of piglets or sows only thanks to the drinking behavior seems to be difficult. The next step is to cross this information with other data (feeding system, automatic weighing station, accelerometer…) to determine a behavioral pattern of healthy animals.

PDF icon 8e ECPLF, 12-14 septembre 2017, Nantes, par Yvonnick Rousselière et al.
2018

High load of hepatitis E viral RNA in pork livers but absence in pork muscle at French slaughterhouses

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International Journal of Food Microbiology, 2018, volume 264, janvier, par Carole Feurer et al.

L’IFIP (Carole Feurer), l’INRA et l’AREPSA ont publié un article sur la charge virale de l’hépatite E dans les foies et muscles de porc dans l’International journal of food microbiology.

Cette étude avait pour but de déterminer la prévalence du virus de l’hépatite E (VHE) dans les muscles du jambon au moment de l’abattage, de façon à évaluer s’il existe un risque pour la contamination humaine par la consommation de jambon sec. C’est la première fois qu’une étude analysait plus de 1000 échantillons appariés de sang, muscle et foie dans un abattoir français. Même si 2,8 % des foies étaient contaminés, aucun muscle de jambon n’était positif pour la présence du virus. Le risque de contamination humaine par VHE via la consommation des muscles du jambon est donc limité.

ENG

Pork ham muscle can be contaminated with HEV via blood vessels during viremia and represents a possible source of human contamination via the consumption of dried ham. This study evaluated the prevalence of HEV RNA in pork ham muscles and pork livers at slaughterhouses. Serology was determined on the corresponding serum samples. The apparent individual seroprevalence rate in the 49 pig farms studied was 59% [55.5%-61.4%]. None of the 1134 ham muscles tested was positive for the presence of HEV. HEV prevalence in paired liver samples was 2.8% with a level of contamination of up to 1.46 108copies/g. Sequences of viral strains isolated from positive livers belonged to genotype 3 and subtypes 3c, 3e, 3f and 3j. Our results confirmed that raw pork liver food products are a source of risk for humans but they also showed that there is a limited risk of human infection by HEV through the consumption of ham muscle.

2018

Field evaluation of piglet vaccination with a Mycoplasma hyopneumoniae bacterin as compared to a ready-to-use product including porcine circovirus 2 and M. hyopneumoniae in a conventional French farrow-to-finish farm

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Didier Duvion et al., Porcine Health Management, 2018, volume 4, n° 4, janvier, 8 pages

Abstract

BACKGROUND:

A controlled randomized trial was performed on a well-managed conventional French 180-sow farm. The trial compared the growth performances of piglets vaccinated at weaning (single shot) either with a commercial monovalent Mycoplasma hyopneumoniaebacterin vaccine or with a commercial bivalent vaccine (Porcilis® PCV M Hyo) against M. hyopneumoniae and porcine circovirus 2 (PCV2). The farm's porcine reproductive and respiratory syndrome status was stable, and most diseases (enzootic pneumonia, atrophic rhinitis, post-weaning multisystemic wasting syndrome) were controlled by routine vaccination.

RESULTS:

During the post-weaning phase, the growth performances of the piglets vaccinated with the bivalent vaccine were not significantly different from those vaccinated with the monovalent vaccine. However, during the fattening phase the group vaccinated with the bivalent vaccine had a significantly improved ADG (+34 g/d, p = 0. 047), resulting in a 5-day earlier shipment to slaughter. The group also had a shorter and lower PCV2 load in serum during the fattening period, and an improved lung lesions score. In both groups, three pigs died during the peak PCV2 viraemia (16-23 weeks of age). Immunohistochemistry of the lymph nodes showed that in the group vaccinated with the bivalent vaccine, none of these pigs had PCV2-like lesions, while 2 out of the 3 from the other group did. Results suggest that the added PCV2 valence in the vaccination protocol helps countering the negative impact of subclinical PCV2 infection on growth. The calculated return on investment of the added PCV2 vaccine valence was €1.7 extra revenue per slaughtered pig (€ 39 additional revenue per sow and per year), despite the fact that the cost of the bivalent vaccine was higher than the monovalent M. hyopneumoniae vaccine.

CONCLUSION:

In this healthy conventional sow farm, the combined M. hyopneumoniae and PCV2 vaccination was efficacious, convenient to administer and profitable

2018

Deciphering the genetic regulation of peripheral blood transcriptome in pigs through expression genome-wide association study and allele-specific expression analysis

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T. Maroilley et al., BMC Genomics, 2018, 13 décembre, volume 18, n° 1, 13 décembre,19 pages

Abstract

BACKGROUND:

Efforts to improve sustainability in livestock production systems have focused on two objectives: investigating the genetic control of immune function as it pertains to robustness and disease resistance, and finding predictive markers for use in breeding programs. In this context, the peripheral blood transcriptome represents an important source of biological information about an individual's health and immunological status, and has been proposed for use as an intermediate phenotype to measure immune capacity. The objective of this work was to study the genetic architecture of variation in gene expression in the blood of healthy young pigs using two approaches: an expression genome-wide association study (eGWAS) and allele-specific expression (ASE) analysis.

RESULTS:

The blood transcriptomes of 60-day-old Large White pigs were analyzed by expression microarrays for eGWAS (242 animals) and by RNA-Seq for ASE analysis (38 animals). Using eGWAS, the expression levels of 1901 genes were found to be associated with expression quantitative trait loci (eQTLs). We recovered 2839 local and 1752 distant associations (Single Nucleotide Polymorphism or SNP located less or more than 1 Mb from expression probe, respectively). ASE analyses confirmed the extensive cis-regulation of gene transcription in blood, and revealed allelic imbalance in 2286 SNPs, which affected 763 genes. eQTLs and ASE-genes were widely distributed on all chromosomes. By analyzing mutually overlapping eGWAS results, we were able to describe putative regulatory networks, which were further refined using ASE data. At the functional level, genes with genetically controlled expression that were detected by eGWAS and/or ASE analyses were significantly enriched in biological processes related to RNA processing and immune function. Indeed, numerous distant and local regulatory relationships were detected within the major histocompatibility complex region on chromosome 7, revealing ASE for most class I and II genes.

CONCLUSIONS:

This study represents, to the best of our knowledge, the first genome-wide map of the genetic control of gene expression in porcine peripheral blood. These results represent an interesting resource for the identification of genetic markers and blood biomarkers associated with variations in immunity traits in pigs, as well as any other complex traits for which blood is an appropriate surrogate tissue.

2018

Accelerometer technology to perform precision feeding of pregnant sows and follow their health status

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8e European Conference on Precision Livestock Farming (ECPLF), le 12-14 septembre 2017, Nantes, in : Precision Livestock Farming 17, 2017, p. 666-673, par Michel Marcon et al.

Two trials were conducted at experimental stations of IFIP, located in Romillé (France, Trial 1), and INRA, located in Saint Gilles (France, Trial 2), on pregnant sows equipped with individual ear tag accelerometers to record their activity level: duration of lying, standing and moving sequences. The first trial involved 72 sows penned on a slatted floor in a dynamic group with connected drinkers and automatic feeders, whereas the second trial was carried out on 4 small groups of 6 sows penned on a concrete floor with straw and fed in individual stalls. Firstly, an algorithm was built from video recordings of 24 sows on the slatted floor (2 x 2 h sequences per sow, 96 h). Secondly, the accuracy of the algorithm was assessed by recording and sequencing 96 h and 109 h, respectively, on the slatted floor and concrete floor with straw. The respective sensitivities of the lying, standing and moving behaviours on the slatted floor were 94.4%, 66.9% and 68.4%. With straw, lower sensitivity values were found: 93.65% for lying, 68.35% for standing and 38.83% for moving, linked to more investigative behaviours using the head. The final step was to use these data to improve the feeding practices of pregnant sows, taking their activity level into account. The strong inter- and intra-individual variability shown in the physical activity is a limiting factor for detection of health problems, such as lameness, through the accelerometers. Thus we need additional information, especially the behaviour data generated by identified drinkers and automatic feeders.

PDF icon Michel Marcon et al., 8e ECPLF, 12-14 septembre 2017, Nantes
2018

Assessment of the dynamic growth of the fattening pigs from body weight measured daily and automatically to elaborate precision feeding strategies

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8e European Conference on Precision Livestock Farming (ECPLF), le 12-14 septembre 2017, Nantes, in : Precision Livestock Farming 17, 2017, p. 593-602, par Nathalie Quiniou et al.

Growing pigs are often fed below ad libitum to increase their feed efficiency and carcass leanness. When energy supply is under control, precision feeding is implemented through the amino acids (AA). As the AA requirement depends on the body weight (BW) for the maintenance part and on its daily variation (ΔBW) for the growth part, the adequacy between requirements and supplies on day D+1 depends on the adequacy of predicted BWD+1 and ΔBWD+1. Data sets from four trials were used to forecast BW from time series analyses based either on multivariate adaptive regression splines (MARS) or double exponential smoothing (HWα) methods using the k latest data (8, 14 or 20). Pigs (n = 117) were group-housed and restrictively fed, and their BW was recorded daily and individually with an automatic scale (n = 11 736). With HW0.6, the RMSEP of BWD+1 was the smallest one (1.21 kg) and not influenced by k. Linear regression on the l latest forecasted BW was used to assess ΔBWD+1. At the beginning of the trial, ΔBWD+1 was more difficult to predict from BW forecasted with MARS than with HW0.6. Descriptive statistics of individual variation of ΔBWD+1 based on MARS and HW0.6 were comparable with k = l = 20 only after removal of the first 19 days. Compared to other methods studied, the method HW0.6 seems to be the best compromise to forecast BWD+1 and ΔBWD+1 of restrictively fed pigs.

PDF icon Nathalie Quiniou et al., 8e ECPLF, 12-14 septembre 2017, Nantes
2018

Clean R3 divise le lavage d'air par trois

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Réussir Porc - Tech Porc (FRA), 2018, n° 255, janvier, p. 31, par Yvonnick Rousselière, Nadine Guingand et Michel Marcon

En ne faisant parvenir au laveur que la fraction d'air la plus chargée en ammoniac et en particules, le projet Clean R3 diminue le coût du lavage tout en conservant la même efficacité.

2018

Perspectives 2018 : vers un marché de porc plus tendu

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Réussir Porc - Tech Porc (FRA), 2018, n°255, janvier, p. 22-23, par Michel Rieu et Jan-Peter Van Ferneij

Le marché du porc s'annonce plus dur en 2018, après deux années dopées par la demande chinoise et les exportations hros UE. Dans les principaux pays de l'UE, on s'attens à des baisses de prix de 5 à 8%.

2018

Le prix de l'aliment assez favorable

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Réussir Porc - Tech Porc (FRA), 2018, n°255, janvier, p. 24, par Hervé Marouby

Après une tendance à la baisse ces dernières années, le prix de l'aliment est resté stable en moyenne en 2017.

2018

Initiatives et labels bien-être se développent dans le Nord de l'Europe

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Réussir Porc - Tech Porc (FRA), 2018, n°255, janvier, p. 25, par Christine Roguet

La montée de la contestation de l'élevage a conduit les pays du Nord de l'Europe à créer des labels bien-être pour étiqueter les produits.

2018

La biosécurité passe par une eau de qualité

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Réussir Porc - Tech Porc (FRA), 2018, n° 255, janvier, p. 28-30, par Anne Hémonic

Une eau de qualité fait partie des mesures de biosécurité essentielles pour maîtriser l'état sanitaire d'un cheptel. Des analyses régulières sont indispensables pour bien l'évaluer.

2018

Abattoirs de porcs dans l’UE Des tendances diverses

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Baromètre Porc (FRA), 2018,n° 482, janvier, synthèse du mois, p. 8, par Bérengère Lecuyer

Dans l’UE, les plus gros outils (plus de 4 millions de porcs par an) appartiennent aux trois leaders nord européens : Danish Crown, Tönnies et Vion. En Espagne, les installations se modernisent et s’agran­dissent. En France, en Belgique et au Royaume-Uni, les abattoirs sont plus petits. Les investissements ont repris en France depuis quelques années.

PDF icon Baromètre Porc (FRA), 2018,n° 482, janvier, synthèse du mois, p. 8, par Bérengère Lecuyer
2018

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