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Action 1.1 de la Newsletter RMT Filarmoni n°1

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2020

Analysis of the use of monitoring systems for animal health by farmers and their advisors: differences to work on?

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Soazig Di Bianco (Ecole Supérieure d'Agriculture d'Angers) et al., International Society for Economics and Social Sciences of Animal Health, 2020 International Conference in Copenhaguen, 13-14 novembre 2020, Cophenhauguen, Danemark, poster    

Health context of livestock farms is changing to integrate social, technical and economic pressures towards reduction of antibiotics use and greater attention paid to animal welfare. These pressures therefore call for a preventive herd health approach rather than a curative individual one. We are currently working on a four-year research program on animal health, co-funded by the region Pays de la Loire and Europe.
Our aim is to help livestock farmers to improve, in collaboration with their advisors, the health management of their livestock production. This work focuses on three main livestock sectors of the Pays de la Loire (western France): ruminant farming (i.e. beef, dairy, goat and sheep farming), poultry farming and pig farming. We sought to understand:
i) The diversity of the farmers’ social representations about animal health
ii) With whom farmers work to discuss and manage health issues
iii) Which tools and methods they mobilize to manage their animals’ health.

PDF icon Soazig Di Bianco (Ecole Supérieure d'Agriculture d'Angers) et al., 13-14 novembre 2020, Cophenhaguen, Danemark, poster
2020

Relation homme/animal : comment l'améliorer, au bénéfice des deux

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Valérie Courboulay, Porc Mag (FRA), 2020, n° 557, novembre, p.32

Piloté par l'Ifip, le projet Rhaporc s'est penché sur la relation homme-animal en abordant cette question avec des éleveurs. Il en résulte le développement de olusieurs outils permettant d'améliorer cette relation au bénéfice, à la fois de l'homme et de ses animaux.

2020

Les secrets de la longevité des truies

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Sylviane Boulot et Brigitte Badouard, Réussir Porc / Tech Porc, 2020, n° 283, novembre, p. 28-29

L’Ifip a analysé les carrières de plus de 150 000 truies grâce à cinq nouveauxindicateurs. La longévité est très variable,parfois sous-optimale. Elle dépend des caractéristiques des truies et des pratiques d’élevage.

PDF icon Sylviane Boulot et Brigitte Badouard, Réussir Porc / Tech Porc, 2020, n° 283, novembre, p. 28-29
2020

Test prometteur pour le chauffage à ondes longues

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Yvonnick Rousselière et Johan Thomas, Réussir Porc / Tech Porc, 2020, n° 283, novembre, p. 32

Économiser 65 % d’électricité pour chauffer les salles de post-sevrage grâce au chauffage rayonnant à ondes longues.

PDF icon Yvonnick Rousselière et Johan Thomas, Réussir Porc / Tech Porc, 2020, n° 283, novembre, p. 32
2020

Spoilage of fresh turkey and pork sausages: Influence of potassium lactate and modified atmosphere packaging

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Ngoc-Du Martin Luong (Inrae) et al., Food Research International, 2020, volume 137, novembre, p. 1-14

Fresh poultry and pork meat products represent highly perishable products which are susceptible to spoil within a few days after production. Lactate addition and modified atmosphere packaging are common preservation strategies used to overcome spoilage. This study aimed to identify the effects of these strategies and their possible interactions on spoilage indicators simultaneously on fresh pork and turkey sausages. Ten batches of raw meat (turkey or pork) sausages were industrially produced with different lactate concentrations (0, 1 or 2% w/w in turkey and 0, 0.57 and 1.13% w/w in pork), packed under different gas mixtures (air, MAP1: 70% O2 – 30% CO2 and MAP2: 50% CO2 − 50% N2) and chill stored during 22 days. Spoilage responses including enumeration of total aerobic mesophilic and lactic acid bacteria, measurement of pH and colour, evaluation of visual defects and off-odour, were monitored. Effects of lactate and modified atmosphere packaging (MAP) as well as random effect of the batch variability were studied using a mixed effect model. Despite initial batch variability, significant effects of lactate and gas packaging were observed but in a different way in turkey and pork. Our results suggest that for fresh turkey sausages, the gas mixture enriched in oxygen enhanced off-odour perception and sausage discolouration from red to dark grey / brown colour. Unlike turkey sausages, in pork sausages, lactate did not significantly influence the monitored spoilage responses, whereas MAP (70% O2-30% CO2) reduced the off-odour perception. The developed model could be useful to estimate the effect of preservation strategies on spoilage occurrence while considering industrial batch variability.

source : https://www.sciencedirect.com/science/article/pii/S0963996920305263/pdfft?md5=5227fed033c4a282d596c66be7b6f2ba&pid=1-s2.0-S0963996920305263-main.pdf

2020

Impact of a high-fibre diet on genetic parameters of production traits in growing pigs

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Vanille Déru (Inrae) et al., Animal, 2020, volume 14, n° 11, novembre, p. 2236-2245

The use of diets with increased fibre content from alternative feedstuffs less digestible for pigs is a solution considered to limit the impact of increased feed costs on pig production. This study aimed at determining the impact of an alternative diet on genetic parameters for growth, feed efficiency, carcass composition and meat quality traits. A total of 783 Large White pigs were fed a high-fibre (HF) diet and 880 of their sibs were fed a conventional (CO) cereal-based diet. Individual daily feed intake, average daily gain, feed conversion ratio and residual feed intake were recorded as well as lean meat percentage (LMP), carcass yield (CY) and meat quality traits. Pigs fed the CO diet had better performances for growth and feed efficiency than pigs fed the HF diet. They also had lower LMP and higher CY. In addition, pigs fed the CO diet had lower loin percentage and ham percentage and higher backfat percentage. No differences were observed in meat quality traits between diets, except for a* and b* values. For all traits, the genetic variances and heritability were not different between diets. Genetic correlations for traits between diets ranged between 0.80 ± 0.13 and 0.99 ± not estimable, and none were significantly different from 0.99, except for LMP. Thus, traits in both diets were considered as mainly affected by similar sets of genes in the two diets. A genetic correlation lower than 0.80 would justify redesigning the breeding scheme; however, some genetic correlations did not differ significantly from 0.80 either. Therefore, larger populations are needed for a more definitive answer regarding the design of the breeding scheme. To further evaluate selection strategies, a production index was computed within diets for the 29 sires with estimated breeding value reliability higher than 0.35. The rank correlation between indices estimated in the CO and in the HF diet was 0.72. Altogether, we concluded that limited interaction between feed and genetics could be evidenced, and based on these results there is no need to change pig selection schemes to adapt to the future increased use of alternative feedstuffs in production farms.

source : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7538339/pdf/S1751731120001275a.pdf

2020

Strategies to meet nutritional requirements and reduce boar taint in meat from entire male pigs and immunocastrates

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Giuseppe Bee (Agroscope, Suisse) et al., Animals, 2020, volume 10, n° 11, novembre, 18 pages

This paper reviews the current knowledge on the nutritional requirements of entire male and immunocastrated pigs to obtain an efficient growth, low boar taint level, and good carcass and meat quality. We present the reasons for offering entire males ad libitum access to the diets in order to optimize their protein deposition potential. Boar taint is one of the major issues in the production of entire males; therefore, the impact of various skatole- and indole-reducing feed ingredients is discussed regarding their efficiency and the possible mechanism affecting skatole and indole production in the hindgut. Entire males have lean carcasses, so their intramuscular fat content can be lower than that of surgical castrates or females and the adipose tissue can be highly unsaturated. The possible nutritional strategies to counteract these effects are summarized. We conclude that immunocastrates can be fed similarly to entire males until the second vaccination. However, due to the metabolic changes occurring shortly after the second vaccination, the requirements for essential amino acids are markedly lower in immunocastrates than in entire males.

Source : https://www.mdpi.com/2076-2615/10/11/1950/pdf

2020

Alimentation multiphase en engraissement avec une distribution en soupe : adaptation des installations existantes

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Didier Gaudré et al., rapport d'études, programme SOS Protein, Dy+ Pig, octobre 2020, 7 pages

Afin de connaître les capacités de la distribution soupe à s’adapter à une alimentation multiphase, une enquête a été réalisée auprès de concepteurs et de fabricants de systèmes de distribution pour identifier les limites des équipements de distribution actuellement en place dans les élevages et identifier les pistes d’adaptation envisageables pour chaque système, en vue de la mise en place d’une alimentation multiphase en élevage. Cette enquête a été réalisée au cours de la période allant de 2017 à 2019, dans le cadre du projet Dy+ Pig : optimisation de l’utilisation digestive de la fraction azotée chez le porc.

PDF icon Didier Gaudré et al., rapport d'études, programme SOS Protein, Dy+ Pig, octobre 2020, 7 pages
2020

BEEP: An advisory pig welfare assessment tool developed by farmers for farmers

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Valérie Courboulay et al., Livestock Science, 2020, volume 240, octobre

Farm animal welfare is now an obvious goal for all livestock stakeholders. However, the ways to improve it are neither easy nor evident for animal caretakers or their advisers. Most welfare assessment tools are not designed to be used by farmers but by scientists, vets, breeding advisers or certification bodies. Our project hypothesised that animal welfare could be improved more markedly if farmers could assess the welfare of their pigs themselves, and discuss it with their breeding advisers. Sixteen voluntary farmers, five voluntary breeding advisers, three scientific experts on pig welfare, a pig veterinarian and a specialist in co-design worked together to develop a pig welfare evaluation tool that could be used for self-assessment on pig farms. The tool was constructed in four steps: 1) identifying pig welfare indicators, 2) selecting the best indicators and developing a measurement protocol, 3) testing the tool on farms, 4) giving farmers feedback and validating the tool. All the steps were carried out through working groups. Discussions on welfare indicators led to a list of the most important indicators according to the farmers and advisers, focusing on Welfare Quality® Protocol items “good feeding, good housing, good health and appropriate behaviour”. To be useful on farms, each indicator selected was reformulated into one or more measurements. The tool, known as “BEEP”, currently consists of a folder of documents to be brought onto farms. It focuses only on growing pigs and was designed to take no more than two hours to implement. The BEEP tool makes farmers aware of animal welfare issues and helps them to improve the welfare of their livestock. BEEP is currently being disseminated in France, where the farmers are trained to use it. It is positively welcomed by other farmers and their representatives as it was developed with and for farmers. The next step is to develop an electronic application.

2020

Consumers' expectations and liking of traditional and innovative pork products from European autochthonous pig breeds

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Mauro Vitale (IRTA, Monells, Espagne) et al., Meat Science, 2020, volume 168, octobre, p. 108-179

The aim of the study was to ascertain the acceptability of Traditional (T) and Innovative (IT) pork products by European consumers considering also the influence of the sensory properties. The tests were performed in Barcelona, Bologna, Toulouse and Zagreb, with products from autochthonous pig breeds Porc Negre Mallorquí (patties), Cinta Senese (dry-fermented sausages), Gascon-Noir de Bigorre (dry-cured hams) and Turopolje (dry-cured hams), respectively. The methodological approach relied on the expectancy-disconfirmation model and the assimilation theory (blind, expected and informed tests). All consumers had a similar behaviour: higher expectations of T and IT differentiating them significantly from the remaining products, except in Barcelona test, because consumers in this city were not acquainted with the production system. Innovation in T products focusing on healthy and process innovation highlighted the need to provide information about the breed and the production system, but we can conclude that the sensory quality had a significant role on the preferences of consumers.

2020

PertMat analyse les pertes en maternité

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Brigitte Badouard, Réussir Porc/ Tech Porc (FRA), 2020, n° 282, octobre, p. 14-16

Dossier : gestion technique

L’outil web PertMat mis au point par l’Ifip explore les facteurs explicatifs des taux de pertes en maternité et propose des axes de progrès.

PDF icon Brigitte Badouard, Réussir Porc/ Tech Porc (FRA), 2020, n° 282, octobre, p. 14-16
2020

GT-Direct complète l'analyse GTE et GTTT

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Brigitte Badouard, Réussir Porc/ Tech Porc (FRA), 2020, n° 282, octobre, p. 17-19

Dossier : gestion technique

Le portail web GT-Direct de l’Ifip approfondit les données de chaque élevage à partir des bases nationales pour affiner l’analyse de son fonctionnement et définir un plan d’amélioration.

PDF icon Brigitte Badouard, Réussir Porc/ Tech Porc (FRA), 2020, n° 282, octobre, p. 17-19
2020

« Se former, échanger, s’entraider »

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Brigitte Badouard (IFIP) et Dominique Poilvet (rédacteur en chef de Réussir Porc/ Tech Porc), Réussir Porc/ Tech Porc (FRA), 2020, n° 282, octobre, p. 20

Dans l’Orne, une douzaine d’éleveurs de porcs se réunit régulièrement pour s’informer et échanger sur les différents points techniques de leurs élevages en se basant sur leurs résultats techniques et technico-économiques.

PDF icon Brigitte Badouard (IFIP) et Dominique Poilvet (Réussir Porc), Réussir Porc/ Tech Porc (FRA), 2020, n° 282, octobre, p. 20
2020

Alimentation de précision, moins d'impacts sur l'environnement

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Sandrine Espagnol (Ifip) et Florence Garcia-Launay (Inrae), Réussir Porc/ Tech Porc (FRA), 2020, n° 282, octobre, p. 30-31

La réduction de l’azote consommé par les porcs permise par une alimentation de précision multiphase limite l’impact des rejets sur l’acidification et l’eutrophisation des milieux. Les résultats sont plus contrastés concernant l’impact sur le changement climatique et la consommation d’énergie renouvelable.

PDF icon Sandrine Espagnol (Ifip) et Florence Garcia-Launay (Inrae), Réussir Porc/ Tech Porc (FRA), 2020, n° 282, octobre, p. 30-31
2020

Cinq impacts environnementaux évalués

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Sandrine Espagnol, Réussir Porc/ Tech Porc (FRA), 2020, n° 282, octobre, p. 31

 

PDF icon Sandrine Espagnol, Réussir Porc/ Tech Porc (FRA), 2020, n° 282, octobre, p. 31
2020

Genetics of digestive efficiency in growing pigs fed a conventional or a high‐fibre diet

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Vanille Déru (Inrae) et al., Journal of animal breeding and genetics, 2020, septembre, 13 pages

The use of diets with increased dietary fibre content (HF) from alternative feedstuffs is a solution to limit the impact of increased feed costs on pig production. This study aimed at determining the impact of an alternative HF diet on pig digestibility and at estimating genetic parameters of this trait. Digestibility coefficients (DC) of energy, organic matter and nitrogen were predicted from faecal samples analysed with near infrared spectrometry for 1,242 samples, and it represented 654 Large White pigs fed a conventional (CO) diet and 588 fed a HF diet. Growth and feed efficiency traits, carcass composition and meat quality traits were recorded. Pigs fed the HF diet had significantly lower DC than pigs fed the CO diet (−4.5 to 6.0 points). The DC were moderately to highly heritable (about 0.26 ± 0.12 and 0.54 ± 0.15 in the CO and the HF diet, respectively). Genetic correlations were favourable with feed conversion ratio, daily feed intake and residual feed intake, but unfavourable with average daily gain (ADG) and carcass yield (CY). To conclude, DC could be an interesting trait to include in future breeding objectives if pigs were fed diet with HF diets, but adverse genetic trends with ADG and CY would have to be taken into account.

source : https://onlinelibrary.wiley.com/doi/epdf/10.1111/jbg.12506

2020

Caractérisation de la qualité technologique et de la composition chimique de la viande de coche

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Thierry Lhommeau et al. , Viandes et Produits Carnés (FRA), volume 36, septembre, 11 pages

Cette étude a porté sur la qualité de la viande de coche dans deux abattoirs français et la qualité de saucissons secs fabriqués avec des proportions variables de maigres de coches. Une population de 280 coches a été suivie à l’abattoir et en atelier découpe. Des mesures de qualité de viande (épaisseur de gras dorsal, pH ultime, colorimétrie et pertes d’exsudat) ont été réalisées sur tous les animaux. Les viandes de coche de cette étude présentent peu de viandes à bas pH, mais des viandes DFD ou à tendance DFD (de 10 à 30%) et 70% de viandes normales (pH entre 5,6 et 6). Nous avons constaté des durées de mise à jeun des animaux très longues, en moyenne 39 heures et jusqu’à 55 heures. La durée de mise à jeun influe significativement sur le niveau de pH ultime. Les viandes de coches sombres sont en rapport avec les niveaux de pHu élevés mesurés. Des analyses de composition chimique (taux de protéines, de lipides, d’humidité, de collagène, de collagène thermosoluble) ont été réalisées sur 90 animaux triés sur le poids carcasse. Cette étude confirme que la proportion de collagène thermosoluble baisse avec l’âge des animaux en raison de l’augmentation de la réticulation du collagène.

Des fabrications de saucissons secs ont été réalisées en 4 séries contenant des proportions de maigre de coche croissantes (0, 35, 70 et 100%). Les saucissons contenant du maigre de coche sont caractérisés par une élasticité, une cohésion et une masticabilité significativement supérieures. Ils présentaient une texture plus liée et plus consistante. Cette bonne liaison des produits finis est apportée par la viande de coche à pH plus élevé.

source : https://www.viandesetproduitscarnes.fr/phocadownload/vpc_vol_36/Vol_3641_Qualite-technologique.pdf

 ENG

Characterization of the technological quality of culled sow meat. Effect of adding lean sow content to dry-cured sausage forcemeats on end-product time–course and quality characteristics

Here we led a quality study on sow meat and on dry-cured sausage formulations prepared with varying proportions of lean sow content. We followed a population of 280 culled sows from the pig abattoir to the meatcutting station and carried out a series of meat quality measurements (backfat thickness, ultimate pH, colorimetry and drip loss) on the cuts. We also led chemical composition analyses on a subset of 90 sows (protein content, lipid content, moisture content, collagen content, heat-soluble collagen content). Culled sow meat in this study was rarely low-pH but we found 10%–30% DFD or DFD-like meat and 70% normal-quality meat (i.e. in the range pH 5.6–pH 6). We found very long preslaughter fasting periods, averaging 39 hours and up to 55 hours. Pre-slaughter fasting period had a significant influence on both drip loss and pHu. The culled sow meat was relatively dark, which correlated to measured pHu levels. This research confirms the effect of age on the proportion of heat-soluble collagen, which was found to decrease with increasing age due to increased collagen crosslinking.

The dry-sausage forcemeats were prepared in 4 series containing increasing proportions of sow lean content (0, 35%, 70%, and 100%). The end-product dry cured sausages containing lean sow content were characterized by significantly better elasticity, cohesiveness and chewability which translates into a more consistent and better-bound texture. This improved sausage binding comes from the higher pH of sow meat indicating stronger functionalization of the myofibrillar protein component.

source : https://www.viandesetproduitscarnes.fr/phocadownload/vpc_vol_36/Vol_3641_Qualite-technologique.pdf

PDF icon Thierry Lhommeau et al. , Viandes et Produits Carnés (FRA), volume 36, septembre, 11 pages
2020

Mieux connaître le comportement du porc pour une bonne relation avec les humains en élevage

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Céline Tallet (Inrae) et al., Inrae Productions Animales (FRA), 2020, volume 33, n° 2, septembre, p. 81-94

La relation entre les porcs et les humains est au centre de l’élevage et est un des piliers du bien-être animal. L’humain, par son comportement et ses choix de pratiques, de conditions de logement et de gestion du troupeau va influencer l’état mental de ses animaux. Cette synthèse propose un bilan des travaux sur la relation humain-animal en élevage porcin. Les pratiques et les modes d’élevage ont un impact sur la relation à l’humain. Certaines pratiques sont source de douleur et de peur pour les porcelets, et provoquent des réactions ultérieures de peur vis-à-vis des humains, même inconnus. Inversement, des pratiques ayant pour but de développer une relation de proximité diminuent la peur des humains et favorisent une relation de confiance. En effet, les interactions humaines modifient le comportement des porcs. La présence humaine suffit à habituer un porcelet aux humains, même quelques minutes par jour. Parler aux animaux est primordial, y compris in utero. Les porcelets apprécient les contacts tactiles doux, caresses ou grattages. L’humain, ainsi associé à des interactions positives, prend une valeur positive, ce qui permet d’instaurer un climat de confiance et peut susciter des émotions positives favorables au bien-être animal. Créer une bonne relation en élevage est donc essentiel. Ceci sera bénéfique non seulement au bien-être des porcs, mais aussi à la sécurité et la satisfaction au travail des éleveurs. Cela nécessite de mieux connaître le comportement des porcs pour davantage le prendre en compte. Le conseil et la formation aux éleveurs doivent intégrer ces connaissances.

source : https://productions-animales.org/article/view/4474/13240

ENG

Toward a better knowledge of pig behaviour for a good relationship with humans in farms

The relationship between pigs and humans is at the heart of animal husbandry and animal welfare. Humans, through their behaviour and their choices of practices, housing conditions and herd management, influence the mental state of their animals. This article reviews the knowledge on the human-animal relationship in pig farming. Farming practices and management systems have an impact on the relationship between pigs and humans. Many practices are sources of pain and fear and induce subsequent reactions of fear in piglets towards humans, even unknown ones.

Contrarily, practices that aim at developing a close relationship, reduce fear and increase confidence in humans. Human presence, even for a few minutes per day, is sufficient to get a pig used to humans. Talking to animals is essential, even in utero. Piglets appreciate soft tactile contacts, strokes and scratches. Thus, human presence, when combined with positive interactions, gains a positive value, which creates a climate of trust and stimulates positive emotions that will improve animal welfare. Creating a good relationship in farms is thus essential. Pig welfare will benefit from it, but also famers’ security and satisfaction at work. A better understanding of pig behaviour is necessary in order to take more account of it. Giving advice and training farmers have to integrate this knowledge.

source : https://productions-animales.org/article/view/4474/13240

2020

Matières premières en alimentation animale : que consomme la filière porcine ?

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Manon Sailley, Porc Mag (FRA), 2020, n° 555, septembre, p. 44-45

L'Ifip a participé à une étude permettant de mieux connaître les flux des matières premières utilisées en alimentation animale en France, depuis leurs disponibilités sur le territoire jusqu'à leurs utilisations alternatives (nutritions animale ou humaine, énergie...). L'occasion  de décrypter ce que consomme la filière porcine.

2020

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