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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

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

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

Interaction of swine influenza A virus infection with PRRS MLV vaccination in piglets

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Patricia Renson (Ifip et Anses) et al., 11th European Symposium of Porcine Management (ESPHM), 22-24 mai 2019, Utrecht, Pays-Bas

Swine influenza A virus (swIAV) is a major respiratory pathogen frequently circulating after weaning, a period commonly used to implement PRRS MLV vaccination in piglets. SwIAV infection was previously shown to induce a strong IFN? response. A recent study also showed that IFN? could abrogate the replication of a PRRSV-2 MLV and the inherent immune response.

PDF icon Patricia Renson (Ifip et Anses) et al., 11th ESPHM, 22-23-24 mai 2019, Utrecht, Pays-Bas
2019

Towards the quantitative characterisation of piglets’ robustness to weaning: A modelling approach

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M Revilla et al., Animal, 2019, volume 16, mai, 11 pages

Weaning is a critical transition phase in swine production in which piglets must cope with different stressors that may affect their health. During this period, the prophylactic use of antibiotics is still frequent to limit piglet morbidity, which raises both economic and public health concerns such as the appearance of antimicrobial-resistant microbes. With the interest of developing tools for assisting health and management decisions around weaning, it is key to provide robustness indexes that inform on the animals’ capacity to endure the challenges associated with weaning. This work aimed at developing a modelling approach for facilitating the quantification of piglet resilience to weaning. A total of 325 Large White pigs weaned at 28 days of age were monitored and further housed and fed conventionally during the post-weaning period without antibiotic administration. Body weight and diarrhoea scores were recorded before and after weaning, and blood was sampled at weaning and 1 week later for collecting haematological data. A dynamic model was constructed based on the Gompertz–Makeham law to describe live weight trajectories during the first 75 days after weaning, following the rationale that the animal response is partitioned in two time windows (a perturbation and a recovery window). Model calibration was performed for each animal. Our results show that the transition time between the two time windows, as well as the weight trajectories are characteristic for each individual. The model captured the weight dynamics of animals at different degrees of perturbation, with an average coefficient of determination of 0.99, and a concordance correlation coefficient of 0.99. The utility of the model is that it provides biologically meaningful parameters that inform on the amplitude and length of perturbation, and the rate of animal recovery. Our rationale is that the dynamics of weight inform on the capability of the animal to cope with the weaning disturbance. Indeed, there were significant correlations between model parameters and individual diarrhoea scores and haematological traits. Overall, the parameters of our model can be useful for constructing weaning robustness indexes by using exclusively the growth curves. We foresee that this modelling approach will provide a step forward in the quantitative characterisation of robustness.

https://www.cambridge.org/core/services/aop-cambridge-core/content/view/18FBD3614BA779E09D061744323CF5DD/S1751731119000843a.pdf/towards_the_quantitative_characterisation_of_piglets_robustness_to_weaning_a_modelling_approach.pdf

2019

Pesée individuelle des porcelets de la naissance au sevrage

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Yvonnick Rousselière, Michel Marcon et Pauline Brenaut, Bilan 2018, éditions IFIP, avril 2019, p. 88

De récentes études sur des pesées individuelles  des porcelets au sevrage ont mis en évidence des résultats prometteurs dans la définition de nouveaux critères de sélection. Ces informations collectées à l’échelle du porcelet permettent de mieux appréhender les qualités laitières des truies, les caractéristiques pondérales des portées durant la phase d’allaitement, mais aussi la croissance globale des futurs porcs charcutiers. Malheureusement, la pénibilité de la mesure sur le porcelet limite le nombre de données collectées et leur utilisation en routine dans les schémas de sélection.
Avec le soutien financier de France Génétique Porc et Choice Genetics et en partenariat avec la société Asserva, l’IFIP a travaillé sur la mise au point de 2 prototypes: (1) un caisson de pesée suspendu à positionner devant les abreuvoirs des porcelets dans les cases de maternité et (2) un chariot mobile ergonomique de pesée automatique permettant de récupérer les poids individuels des animaux sans effort.

PDF icon Yvonnick Rousselière, Michel Marcon et Pauline Brenaut, Bilan 2018, éditions IFIP, avril 2019, p. 88
2019

Analyser et maîtriser les pertes en maternité

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Sylviane Boulot, Bilan 2018, éditions IFIP, avril 2019, p. 96

Avec en moyenne 20% de pertes sur nés totaux, la mortalité excessive des porcelets en maternité reste une préoccupation majeure, tant pour des raisons économiques que d’acceptation sociétale. La détermination précise du moment de survenue de cette mortalité et de ses causes est un préalable pour identifier les axes de progrès à mettre en oeuvre dans chaque élevage. Ainsi, la contribution des mort-nés peut être importante (36% des pertes) mais varie selon les troupeaux. Les pertes en allaitement dépendent de nombreux facteurs liés à la conduite et leur analyse doit reposer sur une approche multi-factorielle. Lorsque la mortalité néo-natale précoce est réduite, la bonne prise en charge des portées de grande taille et des porcelets «sur-numéraires» devient alors une vraie préoccupation pour un nombre croissant d’éleveurs.

PDF icon Sylviane Boulot, Bilan 2018, éditions IFIP, avril 2019, p. 96
2019

Détecter précocement les maladies des porcelets à partir de leurs consommations d'eau et d'aliment

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Yvonnick Rousselière, Anne Hémonic et Michel Marcon, Bilan 2018, éditions IFIP, avril 2019, p. 92

En production porcine, les traitements antibiotiques collectifs sont administrés par voie orale. Le respect effectif de la posologie dépend alors des quantités d’eau ou d’aliment ingérées par les animaux. Le premier objectif de cette étude était de suivre les consommations individuelles d’eau et d’aliment des animaux en post-sevrage, pour en évaluer la variabilité inter et intra-individuelle et les risques potentiels de sur- ou sous-dosage des antibiotiques lors d’un traitement ; en effet, à l’apparition d’une pathologie, un animal est susceptible de modifier son comportement alimentaire et d’abreuvement quelques heures avant l’apparition des premiers symptômes. Le deuxième objectif était de vérifier si une détection précoce des maladies était possible par le suivi individuel des consommations des porcelets. Pour ce faire, deux automates connectés, un abreuvoir et un nourrisseur, ont été mis au point pour des animaux en post-sevrage.

PDF icon Yvonnick Rousselière, Anne Hémonic et Michel Marcon, Bilan 2018, éditions IFIP, avril 2019, p. 92
2019

Vers une détection précoce et automatisée des pathologies chez le porcelet

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Michel Marcon, Yvonnick Rousselière et Anne Hémonic, Bilan 2018, éditions IFIP, avril 2019, p. 93

La réduction de la consommation de médicaments en élevage est une attente forte de la société. Pour y parvenir, l’un des moyens est de réduire la survenue des pathologies, notamment en la détectant de manière précoce (pré-clinique), à l’échelle de l’individu : dans cet objectif, la valeur prédictive de signaux possiblement précurseurs, mais par nature difficiles à observer par les animaliers, tels qu’une modification du comportement hydrique ou alimentaire, a été explorée en mobilisant des méthodes d’intelligence artificielle. Les nouvelles technologies rendant possible l’enregistrement en temps réel des consommations d’aliment, d’eau, ainsi que du poids de porcelets, l’IFIP a travaillé, à partir de ces enregistrements, à la mise au point d’un algorithme capable de détecter les porcelets malades 24 à 48 heures avant l’apparition des premiers symptômes visibles.

PDF icon Michel Marcon, Yvonnick Rousselière et Anne Hémonic, Bilan 2018, éditions IFIP, avril 2019, p. 93
2019

Le panel Inaporc analyse les traitements antibiotiques

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Anne Hémonic, Réussir Porc-Tech Porc (FRA), 2019, n° 267, avril, p. 36-37

Entre 2010 et 2016, l’usage des antibiotiques a fortement baissé sur les porcs de la naissance à l’abattage. Mais ils a peu évolué sur les truies.

PDF icon Anne Hémonic, Réussir Porc-Tech Porc (FRA), 2019, n° 267, avril, p. 36-37
2019

Peser les porcelets jusqu’à 30 kg

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Yvonnick Rousselière, Réussir Porc-Tech Porc (FRA), 2019, n° 267, avril, p. 45

L’Ifip a codéveloppé et testé un dispositif de pesée permettant de récupérer automatiquement le poids des porcelets, de la naissance jusqu’à la mise à l’engraissement, lors de leur passage à l’abreuvoir.

PDF icon Yvonnick Rousselière, Réussir Porc-Tech Porc (FRA), 2019, n° 267, avril, p. 45
2019

Un guide européen pour développer des filières mâles entiers ou immunocastrés

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Parick Chevillon, Réussir Porc-Tech Porc (FRA), 2019, n° 267, avril, p. 19

La Commission européenne accompagne l’arrêt de la castration chirurgicale...

PDF icon Parick Chevillon, Réussir Porc-Tech Porc (FRA), 2019, n° 267, avril, p. 19
2019

Analyse des facteurs de variation de la longévité des truies en élevage à partir de quatre nouveaux critères

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Poster présenté par Brigitte Badouard et al., aux 51es Journée de la Recherche Porcine, 5 et 6 février 2019

La longévité des truies en élevage dépend à la fois de leurs performances, principalement en début de carrière, des risques d’accidents et des choix de conduite de l’éleveur. Les réformes prématurées ont un impact économique important, mais les enjeux sanitaires, et sociétaux sont également à prendre en compte. L’objectif de cette étude est de proposer différents critères de mesure de la longévité des truies et d’identifier leurs facteurs de variation en élevage.

PDF icon Brigitte Badouard et al., 51e JRP, 5 et 6 février 2019, poster
2019

Filière porcine polonaise Aval dynamique et import de porcelets

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Lisa Le Clerc et Elisa Husson, Baromètre Porc (FRA), n° 491, synthèse du mois, novembre, p. 8

La filière porcine polonaise tire parti de la compétitivité industrielle du pays et de ses avantages comparatifs en coûts de main d’oeuvre. Son modèle de développement extraverti, reposant sur l’exportation de produits élaborés et l’importation d’animaux vivants, est toutefois menacé par les restrictions qui seraient imposées par l’extension de la Fièvre Porcine Africaine (FPA).

PDF icon Lisa Le Clerc et Elisa Husson, Baromètre Porc (FRA), n° 491, novembre, p. 8
2018

Towards the quantitative characterization of piglets’ robustness to weaning: A modelling approach

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Manuel Revilla et al., Biorxiv, 2018, 26 septembre, 30 pages

Weaning is a critical transition phase in swine production in which piglets must cope with different stressors that may affect their health. During this period, the prophylactic use of antibiotics is still frequent to limit piglet morbidity, which raises both economic and public health concerns such as the appearance of antimicrobial-resistant microbes. With the interest of developing tools for assisting health and management decisions around weaning, it is key to provide robustness indexes that inform on the animals capacity to endure the challenges associated to weaning. This work aimed at developing a modelling approach for facilitating the quantification of piglet resilience to weaning. We monitored 325 Large White pigs weaned at 28 days of age and further housed and fed conventionally during the post-weaning period without antibiotic administration. Body weight and diarrhoea scores were recorded before and after weaning, and blood was sampled at weaning and one week later for collecting haematological data. We constructed a dynamic model based on the Gompertz-Makeham law to describe live weight trajectories during the first 75 days after weaning following the rationale that the animal response is partitioned in two time windows (a perturbation and a recovery window). Model calibration was performed for each animal. Our results show that the transition time between the two time windows, as well as the weight trajectories are characteristic for each individual. The model captured the weight dynamics of animals at different degrees of perturbation, with an average coefficient of determination of 0.99, and a concordance correlation coefficient of 0.99. The utility of the model is that it provides biological parameters that inform on the amplitude and length of perturbation, and the rate of animal recovery. Our rationale is that the dynamics of weight inform on the capability of the animal to cope with the weaning disturbance. Indeed, there were significant correlations between model parameters and individual diarrhoea scores and haematological traits. Overall, the parameters of our model can be useful for constructing weaning robustness indexes by using exclusively the growth curves. We foresee that this modelling approach will provide a step forward in the quantitative characterization of robustness.

https://www.biorxiv.org/content/biorxiv/early/2018/09/27/428920.full-text.pdf

2018

Towards the quantitative characterization of piglet robustness to weaning: A modelling approach

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M. Revilla et al., 69th Annual meeting of the european federation of animal science (EAAP), Dubrovnik, Croatie, 27-31 août 2018 

Weaning is a critical phase in swine production conditions because piglets cope with different stressors that impact its health. During this period, the prophylactic use of antibiotics is still frequent to limit piglet morbidity, which raises economic and public health concerns such as the growing number of antimicrobial-resistant agents. With the interest of developing tools for assisting health and management decisions around weaning, it is key to provide robustness indexes that inform on the animal resilience to weaning. This task is hampered by the multiple-component nature of robustness. This work aimed at developing a modelling approach for facilitating the quantification of piglet resilience to weaning. We monitored 414 Large White pigs housed and fed conventionally during the post-weaning period without antibiotic administration. Body weight and diarrhoea scores were recorded before and after weaning. We constructed a dynamic model based on the Gompertz-Makeham law to describe live weight during the first 75 days after weaning following the rationale that the animal response is partitioned in two time windows (a perturbation and a recovery window). The transition time between the two windows is individual specific as well as model calibration, performed for each animal. The model captured the weight dynamics of animals at different degrees of perturbation. The power of the model is that it provides biological parameters that inform on the amplitude and length of perturbation, and the rate of animal recovery. We are currently investigating how to combine these proxy parameters to provide a robustness/resilience index to weaning. Next step is to correlate this index with individual diarrhoea scores and other health status measurements such as blood biomarkers and faecal microbiota diversity.
We foresee that this study will provide a step forward in the quantitative characterisation of robustness.

Document réservé Espace Pro, veuillez vous identifier
2018

Impact of weaning age on gut microbiota composition in piglets

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F.R. Massacci et al., 69th Annual meeting of the european federation of animal science (EAAP), Dubrovnik, Croatie, 27-31 août 2018

Weaning is a crucial period of pigs, accompanied by nutritional, environmental and social stresses. Studies comparing different ages at weaning have shown that increasing weaning age improves wean-to-finish growth performances and reduces mortality. However, the impact of weaning age on the early-life establishment of the gut microbiota remains under-investigated in pigs. Our objective was to compare the gut microbiota composition of piglets weaned at different ages. 48 piglets were divided in 4 groups of 12 animals weaned at either 14, 21, 28 or 42 days-of-age.
Faecal samples were collected at 3 different time points: day of weaning, 7 days after weaning and at 60 days of age. Faecal DNA bacterial composition was assessed by sequencing the V3-V4 regions of the 16S rRNA gene.
Bioinformatic and biostatistical analysis showed that each weaned group had significant differences between the sample points through weaning transition, confirming that the gut microbiota changes before and after weaning. In addition, microbiota diversity increased according to weaning age, with piglets weaned at 42 days-of-age having a highest alpha diversity and richness. Interestingly, piglets weaned at 42-days maintained a more stable diversity until day 60. We show that late weaning leads to a higher diversity of potentially beneficial microbes prior to the crucial challenge of weaning and might thus provide a competitive advantage to piglets.

Document réservé Espace Pro, veuillez vous identifier
2018

Description and consequences of variability in sows and piglets

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Nathalie Quiniou et al., 69th Annual meeting of the european federation of animal science (EAAP), Dubrovnik, Croatie, 27-31 août 2018

Even though animals are from the same genetic line, farmers have to cope with variability both in sows and piglets.
In sows, variability is observed in traits such as parity, prolificacy, appetite, body weight (BW) and back fat thickness (BF). For instance, at the beginning of gestation, variability in body condition among sows can be high due to parity and age. In addition, at a given age, variability in litter size, milk potential, and appetite results in different nutrient requirements and consequently in variability of changes in maternal body reserves. Variability in BF can be a problem as several studies have indicated that too high or too low BF values are to be avoided at farrowing as well as at weaning. In both cases, the longevity of the sow is impaired, and farmers are advised to manage the sows toward a target BF depending on the physiological stage, associated with an age-dependant BW, increasing with age up to mature BW. In addition, variation in sow’s body condition at farrowing and in prolificacy influences the new born and weaning piglet traits. Compared to less prolific sows, high-prolific sows farrow more piglets, which are both lighter on average and more heterogeneous. Compared to normal birthweight piglets, the survival rate of low birth weight piglets is lower. Providing additional care around birth helps these piglets to survive, but subsequent housing and feeding management have to be adapted to deal with the variability in their growth potential. Nutritional strategies (based on modelling approaches that take into account criteria that influence requirements) are suggested to optimise the expression of the animals’ potential, but most often without an intention to reduce inter-individual variability in growth performance. In order to control or reduce variability, other solutions have been evaluated in experimental studies that focus on the level and the dynamic of the feeding plan and the quality of the diet. The challenge is now to validate these solutions in production units, which will be more or less easy depending on the existing housing and feeding systems, and the economic, welfare and environmental context.

PDF icon Nathalie Quiniou et al., 69th EAAP, Dubrovnik, Croatie, 27-31 août 2018
2018

Accompagner les éleveurs pour une meilleure prise en charge des douleurs animales : le cas de l’écornage des bovins et de la caudectomie des porcs (AccEC).

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Béatrice Mounaix et al., Innovations agronomiques (FRA), 2018, volume 63, janvier, p. 87-98

Le projet AccEC, porté par le RMT « Bien-être animal », reposait sur une approche multi-acteurs visant à créer les conditions d’une réflexion collective. Un comité d’échange national et des groupes de discussion régionaux ont ainsi permis l’expression des points de vue et des propositions des différents acteurs concernés. Deux modules expérimentaux ont débouché sur le développement d’outils d’accompagnement des éleveurs pour soulager la douleur durant l’écornage des jeunes veaux et la caudectomie des porcelets, et à minimiser les facteurs de risques associés à la caudophagie chez le porc. En complément de la validation de protocoles de prise en charge de la douleur et de la formalisation de conseils pratiques pour la réalisation des opérations ou la prévention des risques, un module de formation à l’écornage a été conçu puis testé auprès de 40 éleveurs. Sa pertinence et son impact sur les pratiques (observation et entretien avec les éleveurs avant et après formation) ont été évalués. L’originalité de cette formation est d’associer une approche technique et vétérinaire permettant de transmettre les éléments de savoir-faire pratique et de faciliter l’accompagnement vétérinaire pour la réalisation des anesthésies locales. La démarche pédagogique adoptée a été reconnue comme une des réussites du projet.

https://www6.inra.fr/ciag/content/download/6329/46499/file/Vol63-6-Mounaix.pdf

ENG

To assist breeders in handling animals pain when dishorning calves and during piglets docking

The « AccEc » project, carried by RMT “Animal welfare”, was based on a multi-stakeholders’ approach to create good conditions for a collective reflection. A national committee and regional discussion groups allowed the different stakeholders to express their points of view and proposals. Two experimental work-packages resulted in the development of tools to guide breeders in relieving pain when dishorning calves and during piglets docking. In addition to the validation of protocols designed to handle pain and the formalisation of practical pieces of advice to perform the operation or prevent the risks, a dishorning training was created and tested. Its relevance and its impact on practices were assessed by observations and interviews with breeders before and after the training. This training program originality lies in the association of technical and veterinary approaches, allowing for transmission of practical skills and making veterinary support to local anaesthetic easier. The educational approach selected has been recognized as one of the successes of this project.

2018

Dosage de l’hémoglobine pour évaluer l’anémie du porcelet au sevrage

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Eric Royer, bilan 2017, éditions IFIP, mai 2018, p. 108

Le sevrage des porcelets entraîne un bilan nutritionnel négatif pouvant conduire à l’anémie. Un essai a permis d’évaluer l’état de l’anémie après le sevrage et les effets d’une supplémentation nutritionnelle.

PDF icon Eric Royer, bilan 2017, éditions IFIP, mai 2018, p. 108, fiche n° 65
2018

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