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Auto-diagnostic de la biosécurité par l'éleveur

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Visuels d'intervention présentés par Anne Hémonic, Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 14 pages

PDF icon Anne Hémonic, Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 14 pages
2019

Pourquoi PorcProtect ?

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Visuels d'intervention présentés par Isabelle Corrégé, Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 10 pages

PDF icon Isabelle Corrégé, Space 2019, 10-13 septembre 2019, Rennes (Matinales de l'Ifip), 10 pages
2019

Effect of a beneficial flora colonization of pen surfaces on health and performance of pig weaners

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Eric Royer (ancien Ifip, aujourd'hui Idele) et al., 70th Annual Meeting of the European Federation of Animal Science (EAAP), 26-30  août 2019, Ghent, Belgique, visuels d'intervention

The objective was to test the effects of a positive biofilm formation on the surfaces of post-weaning piglet facilities.
In total, 494 piglets were used in two experiments using a sanitary challenge. 48 h (d-2) before introduction of piglets, 2 identical rooms of 14 pens were sprayed either with water (Control) or a mix (LP) of selected bacteria strains.
Rooms were exchanged between Exp.1 and Exp.2. In Exp.1 rooms were sprayed again at d 15 and in Exp.2 at d 5, 12, 19, 26 and 33. Environmental challenge for piglets was stronger in Exp.1 than in Exp.2. Wiping samples indicated significantly (P<0.05) higher loads of aerobic bacteria (Lactobacillus spp., Bacillus spp.) in LP pen surfaces in Exp.1 at d 0, 5, and 14 and at d 0, 5, 7 and 35 in Exp.2, suggesting the development of the positive biofilm. Percentage of piglets with regular consistency of faeces was continuously higher in LP rooms in Exp.1 (from d 8 to 21) and Exp.2 (from d 5 to 28). Furthermore, mean scores were significantly improved at d 8 in Exp.1 (3.13 vs 4.50; P<0.01) and in Exp.2 at d 9 (2.19 vs 3.19; P=0.01) and 28 (2.03 vs 2.50; P<0.01). Disease outbreaks occurred two days later in Exp.1 (d 9 vs 7) and five days later in Exp.2 (d 12 vs 7) in LP rooms. However, total numbers of deaths from diarrhoea were similar in both treatments in Exp.1 and 2. In Exp.1, LP piglets had numerically better overall ADFI (794 vs 781 g/d; P>0.10) and ADG (510 vs 499 g/d; P>0.10), and had slightly higher weight at d 42 (29.8 vs 29.4 kg; P>0.10). In Exp.2, ADFI (259 vs 219 g/d; P<0.001) and ADG (211 vs 154 g/d; P<0.001) were significantly increased in the LP treatment in phase 1 (d 0 to 15). Weight was significantly higher for LP piglets at d 15 (11.9 vs 11.0 kg; P<0.001), although it was similar at d 41 (P>0.10). In conclusion, the spraying of a beneficial flora on surfaces may result in a protective positive biofilm that would help the piglets to deal better with the weaning challenges.

PDF icon Eric Royer (ancien IFIP, aujourd'hui Idele) et al., 70th EAAP, 26-30 octobre 2019, Ghent, Belgique
2019

Antimicrobial usage evolution between 2010, 2013 and 2016 in a group of French pig farms

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Anne Hémonic et al., 70th Annual Meeting of the European Federation Animal Science (EAAP), 26-30 août 2019, Ghent, Belgique, visuels d'intervention

Monitoring antimicrobial usage in pig farms is a key element of a reduction plan. The objective of this study was to analyse the antimicrobial usage evolution in the same farms between 2010-2013-2016 and to identify the factors of variations. The study monitored antimicrobial usage by weight group in 2016 in 33 farrow-to-finish farms in the West of France. The antimicrobial usage had ever been registered twice for 23 of them in 2010 and 2013 and once for 10 of them in 2013. It was quantified by the number of Course Doses per produced pig per year (nCD/pig). Farmers were asked about the factors that could explain the evolution between 2013-2016. On average, antimicrobial usage significantly decreased over six years (-38%). However, a high variability of individual evolutions was observed: among the 23 farms with three annual data, 43% decreased their use between 2010-2013 (-3 nCD/pig on average) but had a stable use between 2013-2016 (-0,2 nCD/pig). 26% decreased their use between 2010-2013 (-4 nCD/pig on average) and also between 2013-2016 (-2 nCD/pig). 9% increased then decreased their use during the two periods (+4 then -7 nCD/pig). One farm had the opposite trajectory (-9 then +2 nCD/pig) and another always increased its use (+2 then +5 nCD/pig). Among the 33 farms with data in 2013-2016, 36% decreased their use (-2 nCD/pig on average), 39% had a stable use and 24% increased their use (+3 nCD/pig). For sows, suckling piglets and fattening pigs, most of the farms had stable usage between 2013-2016. Only antimicrobial usage for weaned piglets was more frequently reduced. Increases were explained by occurrence of sanitary problems (mainly urogenital, digestive and respiratory problems on sows, piglets and fatteners respectively). Decreases were explained by vaccination, stop of preventive treatments and improvement of herd management. This study highlights the variability of individual trajectories in antimicrobial usage, due to sanitary issues that may be different according to each weight group. It usefully complements the monitoring of average evolution at the country level.

PDF icon Anne Hémonic et al., 70th EAAP, 26-30 août 2019, Ghent, Belgique
2019

Early disease detection for weaned piglet based on live weight, feeding and drinking behaviour

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Michel Marcon et al., 70th Annual Meeting of the European Federation Animal Science (EAAP), 26-30 août 2019, Ghent, Belgique, visuels d'intervention

Early disease detection is one of the key to effective disease control in farms and reducing antibiotics usage. A batch of 153 weaned piglets was used to test a first machine learning algorithm in order to predict the individual health state of each animal. In order to build the early disease detection algorithm, nine boxes of 17 piglets has been set up with automata. In real time within this section we knew the number of times each animal went to the drinker or the feeder, the quantity of water and feed it took and its weight. As the golden standard to know either a piglet seems healthy or not, the clinical signs will be observed by trained operators on each pig every workday and recorded on a standardized grid (diarrhoea, cough, lameness…). Then, data collected from this batch of 153 piglets were used to create an algorithm with the software R, based on bagging and random forest machine-learning method. The database was split into learning (70%) and testing (30%). We obtained a global success of 86% of good prediction. 
In order to validate the accuracy of the model, a second batch of 153 piglets was used. Every day, a list of predicted sick pigs was printed automatically, indicating the individual identification of the animal, and its pen. Then, the results of these predictions were compared with the golden standard (observations of clinical signs by trained operators). Out of 3,437 observations (including predictions that the piglet is not sick), the algorithm correctly predicted the status of the piglets 2,462 times. Artificial intelligence has made 72% of good predictions. Regarding the true positive results, 96 alerts out of 117 were actually associated with observations of animals suffering mainly
from diarrhoea within two days (82% of success). Now, the aim is to improve this algorithm in different ways: to test accelerometers to check the activity of each piglet; to be more accurate on recording cough by a microphone (SOMO, Soundtalks); to test if some trajectories of behavioural change are linked to specific diseases (lameness, digestive or respiratory disease) and not only to generic disease. These studies will be part of the Healthylivestock project (EC funded H2020 research project).

PDF icon Mchel Marcon et al., 70th EAAP, 26-30 août 2019, Ghent, Belgique
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

Transport des porcs : des mesures de biosécurité renforcées

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Isabelle Corrégé, Porc Mag (FRA), 2019, n° 543, juin, p. 29

Dans la continuité des exigences de biosécurité définies au niveau des élevages, le nouvel arrêté du 29 avril 2019 fixe des mesures pour lutter contre la propagation des maladies dont la Fièvre porcine africaine, lors du transport des porcs.

2019

Des mesures de biosécurité renforcées pour le transport des porcs

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Isabelle Corrégé, Réussir Porc / Tech Porc (FRA), 2019, n° 269, juin, p. 14

Dans la continuité des exigences de biosécurité définies au niveau des élevages…

PDF icon Isabelle Corrégé, Réussir Porc / Tech Porc (FRA), 2019, n° 269, juin, p. 14
2019

Protéger les élevages des intrusions de suidés grâce aux clôtures

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Isabelle Corrégé, Réussir Porc / Tech Porc (FRA), 2019, n° 269, juin, p. 9

En application de l'arrêté ministériel du 16 octobre 2018 sur les mesures de biosécurité en élevage...

PDF icon Isabelle Corrégé, Réussir Porc / Tech Porc (FRA), 2019, n° 269, juin, p. 9
2019

Evaluation of Porcine Epidemic Diarrhea virus (PEDV) seroprevalence in France in 2018

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Roxane Rossel (Ansp) et al., 11th European Symposium of Porcine Management (ESPHM), 22-24 mai 2019, Utrecht, Pays-Bas, poster

In France, four cases of porcine epidemic darrhea (PED) were delected from 2014 to 2017, caused by moderate pathogenic "S-InDel", PEDV strians. PED is notifiable in France and no case caused by "S-non-InDel" PEDV strains that are highly pathogenic have been reported to date.

A national serological survey was implemented in 2018 to assess the PEDV/prevalence in order to evaluate if PEDV strains have been circulating without evidence of clinical signs on animals in herds.

Document réservé Espace Pro, veuillez vous identifier
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

PRRS post-vaccinal immune response to MLV in PRRS multivaccinaled sows

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

PRRS MLV vaccines are used to prevent reproductive disorders due to PRRSV in sows. Vaccine efficacy was proven only in sows vaccinated once or twice. In vaccinated herds, sows receive multiple vaccine boosters. To date, no data are available on the maintenance of PRRS immunity during these multiple revaccinations.

Document réservé Espace Pro, veuillez vous identifier
2019

PorcProtect by Ifip : An assessment of the farm biosecurity level on-line

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Isabelle Corrégé et Anne Hémonic, 11th European Symposium of Porcine Management (ESPHM), 22-23-24 mai 2019, Utrecht, Pays-Bas, poster

Biosecurity is an essential step for any sustainable approach to reducing the use of antibiotics. In the framework of the French Ecoantibio plan, IFIP has created a tool which objective is to evaluate biosecurity level of a farm and help pig farmers to change their practices.

PDF icon Isabelle Corrégé et Anne Hémonic, 11th ESPHM, 22-23-24 mai 2019, Utrecht, Pays-Bas, poster, PDF icon Isabelle Corrégé, ESPHM, Utrecht, Pays-Bas
2019

Evolution of medication costs from 2006-2016 from the French national technical and economic database

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Alexandre Poissonnet et al., 11th European Symposium of Porcine Management (ESPHM), 22-23-24 mai 2019, Utrecht, Pays-Bas, poster

The evolution of expenses for veterinary medication in the French national technical and economic database (GTE) is used to analyze antibiotics usage. The evolution of preventive medication especially vaccine usage is surveyed. The large panel of data from the GTE database permit to analyse the geographical area infl uence on medication costs.

PDF icon Alexandre Poissonet et al., 11th European Symposium of Porcine Management (ESPHM), 22-23-24 mai 2019, Utrecht, Pays-Bas, poster, PDF icon Isabelle Corrégé et al., ESPHM, Utrecht, Pays Bas
2019

Impact of PCV2 co-infection on replication level of a field vaccine-like PRRSV-1 strain

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Julie Eclercy (Anses) et al., 11th European Symposium of Porcine Management (ESPHM), 22-23-24 mai 2019, Utrecht, Pays-Bas

In pig herds, PRRSV is often associated with PCV2, this co-infection being one key factor leading to postweaning multisystemic wasting syndrome (PMWS). Worryingly, association of a PRRSV modified live vaccine of Type 2 (MLV2) with PCV2 infection was also shown to induce PMWS.
In a French pig farm presenting a clinical presentation of PMWS, we identified a MLV1-like strain in coinfection with PCV2. Through an in vivo experiment, we aimed at evaluating the impact of PCV2 co-infection on virulence level of these MLV1-like and parental MLV1 strains.

Document réservé Espace Pro, veuillez vous identifier
2019

Evolution of antimicrobial use in French pig farms from 2010 to 2016 through the Inaporc panels

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Anne Hémonic et al., 11th European Symposium of Porcine Management (ESPHM), 22-23-24 mai 2019, Utrecht, Pays-Bas, poster

The French Ecoantibio plan was a success : the exposure of pigs to antibiotics decreased by 41% from 2012 to 2016, while the initial target was -25%.
But beyond this overall assessment of antibiotic sales by pharmaceutical companies, farm surveys are important to describe more precisely how antibiotics are used. The three INAPORC panels, implemented in 2010, 2013 and 2016, meet this objective to produce detailed references on antibiotics usage, based on representative sample of farms.

PDF icon Anne Hémonic et al., ESPHM, Utrecht, Pays-Bas, PDF icon Anne Hémonic et al., 11th European Symposium of Porcine Management (ESPHM), 22-23-24 mai 2019, Utrecht, Pays-Bas, poster
2019

Dépenses de santé : une baisse de 9% dans les élevages français

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Alexandre Poissonnet, Porc Mag (FRA), 2019, n° 542, mai, p. 33

L’étude annuelle menée par l’Ifip sur les données GTE montre une diminution significative des dépenses de santé entre 2006 et 2016. L’analyse détaille le type de dépense, « préventive » ou « curative » et la région étudiée.

2019

Evolution entre 2006 et 2016 des dépenses de santé dans les élevages à partir du dispositif GTE

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Alexandre Poissonnet, Bilan 2018, éditions IFIP, avril 2019, p. 112

La maîtrise des dépenses de santé permet tout à la fois de réduire les coûts de production et de suivre l’utilisation des antibiotiques pour diminuer la génération de résistance bactérienne et préserver l’arsenal thérapeutique existant. La base de Gestion Technico-Économique (GTE) fournit des références sur ces dépenses de santé.
L’Ifip analyse depuis plusieurs années l’évolution de ce poste (dépenses préventives et curatives) dans les différentes zones géographiques (marquées par des densités de production contrastées).
PDF icon Alexandre Poissonnet, Bilan 2018, éditions IFIP, avril 2019, p. 112
2019

L’outil de Gestion des traitements Vétérinaires en élevage : Gvet

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Anne Hémonic, Bilan 2018, éditions IFIP, avril 2019, p. 101

La démarche GVET, poursuivie conjointement par l’Ifip, l’Anses et Isagri, répond à 2 enjeux complémentaires en élevage : numériser le registre des traitements (RT) et assurer une mesure standardisée et officielle des usages d’antibiotiques.
Bien que la traçabilité des traitements vétérinaires en élevage soit obligatoire depuis 2000, la quasi totalité des éleveurs consigne actuellement ces informations sur papier, sous des formats hétérogènes.
Deux enquêtes ont été réalisées en 2018 pour faire cet état des lieux des modalités d’enregistrement des traitements vétérinaires en élevage et pour identifier les motivations ou freins à la numérisation de ce registre.
PDF icon Anne Hémonic, Bilan 2018, éditions IFIP, avril 2019, p. 101
2019

Evolutions des usages d’antibiotiques entre 2010 et 2016 : variabilité inter- et intra- élevages

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Anne Hémonic, Bilan 2018, éditions IFIP, avril 2019, p. 106

Entre 2010 et 2016, l’exposition des porcs aux antibiotiques a baissé de 52%. Ce résultat est issu des panels INAPORC successifs, qui rassemblent les enquêtes réalisées auprès d’échantillons représentatifs d’élevages. A chaque édition du panel, un tirage de novo des élevages est réalisé, afin de ne pas biaiser le dispositif par une accoutumance des éleveurs qui seraient suivis pendant 6 ans consécutifs et seraient ainsi moins représentatifs de la population générale. Pour cette raison, ce dispositif ne permet pas de mesurer intra-élevage l’évolution des usages d’antibiotiques entre deux périodes. L’objectif était donc ici de suivre, en 2016, les usages d’antibiotiques dans les mêmes élevages que ceux déjà enquêtés en 2010 et en 2013, afin de décrire et d’analyser leur trajectoire individuelle sur 6 ans.

PDF icon Anne Hémonic, Bilan 2018, éditions IFIP, avril 2019, p. 106
2019

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