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Journées de la Recherche Porcine 2020

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Le recueil des JRP permet la diffusion rapide des résultats de la recherche francophone sous forme d’articles de 6 pages ou 2 pages, comprenant tous un résumé en anglais.

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2020

Impact du décorticage et des traitements thermiques du soja sur la valeur nutritionnelle des tourteaux partiellement déshuilés chez le porcelet

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Veronika Halas (Kaposvár University, Hongrie) et al., 52e Journées de la Recherche Porcine (FRA), 4 et 5 février 2020, Paris, p. 31-36

Des graines de soja cultivées en Europe ont été broyées, puis décortiquées (D) ou non (W), puis extrudées par mono vis à 140°C à environ 100 kg/h (EP) ou bien cuites à 150°C pendant 60 minutes après floconnage (FCP), et enfin pressées. L’extrusion permet d'abaisser la teneur en huile résiduelle dans les tourteaux, alors que le décorticage accroît la teneur en protéine. Les activités antitrypsiques (TI) sont, respectivement, de 2,6, 3,5, 3,6 et 7,6 UIT/mg pour les tourteaux EP-W, EP-D, FCP-W et FCP-D. La température inférieure en sortie du sécheur du lot FCP-D (90 vs 97°C) explique probablement une moindre inactivation des TI, ce que confirme l'hydrolyse in vitro à base de trypsine, chymotrypsine et peptidase (méthode pH-stat). Les valeurs nutritionnelles des quatre tourteaux ont été comparées à celle d’un tourteau extrait au solvant lors d’un essai zootechnique d’une durée de 28 jours suivi par une collecte en cages de digestibilité pendant 5 jours consécutifs. Pour ces deux essais, 70 porcelets mâles castrés âgés de 5 semaines ont été utilisés. La digestibilité iléale apparente et standardisée a été déterminée par collecte post-mortem des digesta à la fin de l'iléon. Les performances et la rétention azotée obtenues avec trois des tourteaux (EP-D, EP-W et FCP-W) sont équivalentes à celles du tourteau témoin, mais avec des digestibilités iléales apparente et standardisée des acides aminés numériquement supérieures à celle du témoin. Les performances dégradées et la digestibilité inférieure des acides aminés obtenues avec le tourteau FCP-D soulignent l’importance d’une bonne maîtrise de l’activité antitrypsique. Grâce à leur excellente valeur biologique, de tels tourteaux produits à partir de soja local non OGM pourraient avoir un intérêt nutritionnel et économique en Europe. 

ENG

Influence of dehulling and thermal treatment of soybeans on nutritive value of partly defatted soymeals for piglets

European grown soy beans were ground, then dehulled (D) or kept whole (W), then extruded using a single screw extruder at 140 °C at about 100 kg/h (EP) or cooked at 150 °C during 60 minutes after flaking (FCP), and finally pressed. Extrusion allowed a lower residual oil content in the soybean meal (SBM), whereas dehulling resulted in a higher content of the protein. The trypsin inhibitor (TI) values were 2.6, 3.5, 3.6 and 7.6 TIU /mg, for EP-W, EP-D, FCP-W and FCP-D SBM, respectively. The lower temperature at the dryer exit for the FCP-D batch (90 vs 97 °C) probably explained a lower TI inactivation, which was confirmed by the in vitro hydrolysis using trypsine, chymotrypsine and peptidase (pH-Stat method). The nutritive values of the four meals were compared to a commercially available solvent extracted SBM in a 28-day performance trial using a total of 70 5-week-old barrow piglets, followed by a 5-day N balance study in metabolic cages with the same animals. Apparent (DIA) and standardized (DIS) ileal digestibility were determined by ileal chyme collection post-mortem. Diets contained the different SBMs as sole protein source. Three of the diets (EPD, EP-W, and FCP-W) resulted in similar performance and N retention compared to the control SBM, and had higher apparent and standardized ileal digestibility of amino acids than this control diet. Lower piglet performance and amino acids digestibility for the FCP-D diet highlight the importance of a low residual TI activity in SBM. Thanks to their excellent biological value, such meals produced from local and non-GMO soybeans could be of nutritional and economic interest in Europe.

2020

Analyse environnementale de l’utilisation de sources de protéines européennes pour l’alimentation porcine

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Sandrine Espagnol et al., 52e Journées de la Recherche Porcine (FRA), 4 et 5 février 2020, p. 337-342

La substitution au tourteau de soja brésilien (TSB), issu en partie de zones déforestées, avec des sources de protéines européennes (SPE), est une voie à l’étude pour réduire l’impact changement climatique de l’alimentation animale. Ce travail s’intéresse à de nouvelles sources de protéines européennes : une fraction fine de tourteau de colza (SPE1), deux tourteaux de soja Expeller, l’un avec décorticage préalable des graines (SPE2), l’autre sans (SPE3), et un concentré protéique issu de biomasse (SPE4). L’objectif est d’analyser les incidences environnementales de l’utilisation de ces matières premières dans l’alimentation des porcs charcutiers. Les impacts environnementaux sont évalués par Analyse de Cycle de Vie pour un kilogramme de porc au portail de la ferme. Les bénéfices environnementaux sont estimés en comparant des scénarios avec incorporation des SPE à des scénarios de référence utilisant les sources de protéines « classiques » (dont le TSB). L’exercice est conduit dans un contexte économique récent, considérant quatre pays européens et quatre années contrastées : il mesure l’opportunité actuelle d’utiliser ou non les SPE. Un deuxième contexte, favorable au TSB ou aux SPE, est simulé afin d’approcher le bénéfice potentiel des SPE. Dans le premier contexte, les résultats montrent un intérêt modéré des SPE car le TSB entre peu dans les formules de référence (<5%) : il n’y a pas grand-chose à substituer. Dans le deuxième contexte, l’intérêt des SPE ressort pour le changement climatique particulièrement pour les tourteaux Expeller (réduction d’environ 9%) mais avec un transfert de pollution sur l’occupation des sols (augmentation de 13%). Ces résultats soulignent la nécessité d’analyses à des échelles plus macroscopiques afin de prendre en compte les effets induits par les changements de formules.

ENG

Environmental assessment of new European protein sources for pig feeds

Replacement of Brazilian soybean meal (BS) associated to deforestation with European protein sources (EPS) was studied to reduce the impact of feed production on climate change. This study examined four EPS: the fine fraction of rapeseed meal (EPS1), soybean meals obtained from an innovative extrusion process with dehulled soybeans (EPS2) or non-dehulled soybeans (EPS3), and Danish protein pastes extracted from green biomass (EPS4). The goal was to estimate environmental impacts of pig production resulting from incorporating EPS in feeds for fattening pigs. Environmental impacts per kg of pig liveweight at the farm gate were estimated using life cycle assessment. Potential benefits were assessed by comparing each scenario with EPS to reference scenarios with “classic” protein sources (including BS). The study considered the recent economic context of four countries (France, Germany, Spain and the Netherlands) for four contrasting years to assess the current potential for using EPS. A second, virtual, context was defined with scenarios favorable to either BS or EPS, and the potential benefit of EPS was then appraised. In the recent economic context, results showed a moderate benefit with EPS because SB had low incorporation rates in the reference formulas (<5%) (little SB to replace). In the virtual context, the benefit of EPS is apparent for climate change, particularly for European soybean meal (reduction of ca. 9%) but with a transfer of pollution to land use (increase of 13%). These results highlight the need for more macroscopic analyses to capture rebound effects.

2020

La spectroscopie dans le proche infrarouge (NIRS) détermine avec précision la valeur nutritive des matières premières et des aliments pour porcs

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Samantha Joan Noel ( Aarhus University, Danemark) et al., 52e Journées de la Recherche Porcine (FRA), 4 et 5 février 2020, Paris, p. 105-106, poster

Poster.

L'ajustement de la variation de la valeur nutritive des aliments porcins est généralement effectué en utilisant les résultats d’analyse chimique et les valeurs moyennes de digestibilité des tables ou des équations disponibles. Cependant, à cause de l’effet des conditions de culture sur la composition des matières premières, les valeurs des tables sont insuffisamment précises pour déterminer les variations entre matières premières du même type (Just et al., 1983). Actuellement, les autres méthodes pour déterminer la valeur nutritive des aliments pour porcs à l’aide de modèles animaux ou de digestions in vitro sont longues et coûteuses. L’objectif est ici d’utiliser le spectre proche infrarouge (NIRS) de matières premières et aliments porcins combinée avec la modélisation pour développer des estimations rapides, peu coûteuses et précises de leur composition et valeur nutritive.

ENG

Poster.

Near-infrared spectroscopy (NIRS) accurately predicts the nutritive value of individual components and mixed diets for pigs

Accurate feed-quality information is of outmost importance, not only because feed accounts for at least two-thirds of the cost of livestock production, but also because accurate feed-quality information is critical for optimizing performance and minimizing the climate footprint of livestock production. Current methods to determine the nutritive value of pig feedstuffs are time consuming and expensive (animal models or in vitro digestions) or not accurate enough to determine variation among feedstuffs of the same type (table values). Here, we used near-infrared spectroscopy (NIRS) of 619 pig feedstuffs in combination with modeling to develop rapid, inexpensive and accurate estimates of the digestibility of macronutrients (energy (DE), organic matter (OM), protein, fat, crude fiber (CF), nitrogen free extract (NFE), dietary fiber (DF) and hemicellulose) as well as metabolizable energy. Prediction models were developed for cereals, alternative ingredients (e.g. cereal substitutes, protein concentrates, cereal by-products and grass meal) and mixed diets or all pig feedstuffs together as a whole. Models were tested using an independent set of samples (n=154). Overall models predicted the digestibility of macronutrients well (R2 = 0.70-0.87 for DM, OM, protein, fat, and energy). Moderately accurate predictions (R2 = 0.50-0.52) were made for CF and DF. The mean relative standard error was 5%, except for the digestibility of fat, CF, DF and hemicellulose (16-25%). NIRS estimates of DE were better than those using the current Danish in vitro method with enzymatic digestion of OM (R2 = 0.97 vs. 0.90, respectively), and NIRS estimates of ME were better than using table values (R2 = 0.94 vs. 0.89, respectively). Thus, NIRS provides more accurate estimates of the digestibility of feedstuffs than current estimation methods.

2020

Effet de la granulation des aliments sur l'utilisation de l'énergie chez le porc en croissance : conséquences sur les teneurs en énergie nette des régimes

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Etienne Labussière (Inrae) et al., 52e Journées de la Recherche Porcine (FRA), 4 et 5 février 2020, Paris, p. 93-98

La granulation des aliments est un procédé fréquemment employé en alimentation porcine, même si les valeurs nutritionnelles sont le plus souvent estimées à partir d’aliments présentés sous forme de farine. L’objectif de l’expérimentation était de tester les effets induits par la granulation à deux températures différentes sur l’utilisation digestive et métabolique de l’azote et de l’énergie de deux aliments formulés à partir de matières premières se différentiant par leur comportement à la granulation, chez les porcs mâles castrés et femelles. Pour cela, les bilans azotés et énergétiques de 48 porcs (24 mâles castrés et 24 femelles) d’un poids vif moyen de 86 kg et recevant deux formules alimentaires sous forme de farine ou de granulés fabriqués à basse ou à haute température (température en sortie de malaxeur de 55 ou 78 °C) ont été mesurés en chambre respiratoire. La granulation a permis d’améliorer le coefficient d’utilisation digestive de l’azote (+4,0 points) et de l’énergie (+2,6 points) quelle que soit la formule alimentaire. L’augmentation par la granulation de la quantité d’énergie métabolisable ingérée (+165 kJ/kg PV0,60/j) a permis d’augmenter la rétention énergétique (+150 kJ/kg PV0,60/j), en particulier sous forme de lipides, à cause d’une meilleure efficacité d’utilisation de l’énergie et d’une baisse de la production de chaleur liée à l’activité physique. Les mâles castrés ont systématiquement présenté une meilleure réponse à la granulation des régimes par rapport aux femelles. La granulation à basse température a permis d’augmenter de 5% la teneur en énergie nette des régimes. Cette amélioration n’est que de 2,8% pour une température de granulation plus élevée.

ENG

Effect of pelleting on utilization of dietary energy by growing pigs: consequences on dietary net energy values

Although pelleting of diets is a common practice in the pig industry, nutritional values are estimated from values of feedstuffs that have often been measured for diets presented as meal. The objectives of the study were to determine effects of pelleting at a low or a high temperature (55 or 78°C at the end of the conditioner) on digestive and metabolic utilization of nitrogen and energy of diets formulated with feedstuffs differing in their response to pelleting. During the experiment, nitrogen and energy balances of 48 pigs (24 castrated males and 24 females; mean body weight: 86 kg) were measured in respiration chambers when fed two diets offered as meal or pellets produced at a low or a high temperature. Digestive utilization of nitrogen and energy was improved by pelleting (+4.0 and 2.6 points increase in digestibility coefficient, respectively), regardless of the composition of the diet. Pelleting also improved the intake of metabolizable energy (+165 kJ/kg BW0.60/d) and energy retention (+150 kJ/kg BW0.60/d), because of increased energy efficiency and decreased heat production associated with physical activity. Castrated males always exhibited even better reactions to pelleting than females. Pelleting at a low temperature increased dietary net energy content by 5%, while increasing pelleting temperature reduced this improvement to 2.8%.

2020

Supplémentation d’extrait d’algues en engraissement : effets sur la qualité technologique et nutritionnelle (viande et abats)

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Antoine Vautier et al., 52e Journées de la Recherche Porcine (FRA), 4 et 5 février 2020, p. 65-66, poster

Poster.

De récentes études attribuent aux extraits d’algues de multiples qualités telles que des propriétés antioxydantes, antivirales, anticancer, anticoagulantes ou hypolipidémiantes (Wang et al., 2014). En élevage, l’usage d’extrait d’algues dans l’alimentation animale commence à se rencontrer en tant qu’élément naturel susceptible d’améliorer les fonctions immunitaires de l’animal. Dans cette étude, la question de l’effet d’une supplémentation en extrait d’algues dans l’alimentation des porcs sur la qualité nutritionnelle de la viande et des abats et leurs éventuels bénéfices sur la santé humaine a été étudiée. L’impact de cette supplémentation sur les principaux critères de la qualité technologique de la viande ainsi que sur sa composition nutritionnelle a été évalué et l’effet de la supplémentation sur la qualité sensorielle a été testé sur un sous-échantillon. 

ENG

Adding algae to pig feed: influence on meat quality and composition of meat and offal

Poster.

Recent publications show the potential of algae as a source of bioactive compounds demonstrating a wide range of biological activities, such as antioxidant, antiviral and anti-hyperlipidemia activities. In animal husbandry, algae extracts have progressively emerged as a new generation of natural ingredients that help to improve immune function and animal health. This study aimed to assess impacts of algae addition to pig feed on the quality of meat and offal (liver and casing). The study was conducted on 231 fattening pigs, 50% fed a diet supplemented with algae extract, and 50% fed a control diet. Subsamples were selected for nutritional value analysis of loin (n=20), liver (n=10) and casing (n=10). No significant effect on carcass characteristics, sensory evaluation of the loin or overall meat quality was observed. Nonetheless, the semimembranosus pH1 increased slightly, but without any consequence on drip loss or color. Nutritional composition of the longissimus muscle was enhanced by algae supplementation, with higher levels of magnesium, zinc and B vitamins. Similar trends were observed for vitamin B12 content in the liver, while the magnesium content in the casing increased. Finally, algae addition to pig feed at a high level (7.3% of dry mater) had no effect on carcass composition or sensory traits of the loin after cooking. 

2020

Evaluation in vivo de la pertinence des niveaux de formulation choisis a priori pour concevoir un plan d'alimentation multiphase

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Nathalie Quiniou et al., 52e Journées de la Recherche Porcine (FRA), 4 et 5 février 2020, Paris, p. 117-118, poster

Poster.

Au cours des 30 dernières années, l'alimentation en deux phases (2P) pendant l'engraissement s'est généralisée en France. Plus récemment, le développement de systèmes d'alimentation innovants permet d'envisager un nombre phases plus élevé dans l'objectif d'économiser les sources de protéines et de réduire les rejets en N pour un même niveau de performance. La dynamique d'évolution des besoins nutritionnels, par exemple en acides aminés, dépend du type de croisement, du type sexuel mais également de la bande et des conditions d'élevage (densité, régulation de l'ambiance…). Elle est par ailleurs variable d'un individu à l'autre. Pour établir une séquence multiphase, il est donc nécessaire de se référer à un profil moyen de référence décrivant l'évolution du besoin, augmenté d'une marge de sécurité (Brossard et al., 2006). Deux essais ont été conduits en condition d'alimentation rationnée pour évaluer la pertinence de séquences en trois (3P) ou cinq phases (5P) établies sur la base d'un profil de besoin obtenu environ 7 ans plus tôt pour le croisement de porc utilisé.

ENG

In vivo evaluation of the relevance of nutritional levels chosen a priori to design a multiphase feeding strategy

Poster.

Two trials were performed with restrictively fed pigs to compare the growth performance obtained with a 2-phase (2P), 3-phase (3P, trial 1) or 5-phase (5P, trial 2) feeding strategy, each of which was designed based on a nutritional profile characterised a few years earlier for the type of crossbred pigs used. In each trial, two batches of 96 barrows and gilts obtained from Pietrain sires and (Large White x Landrace) sows were used. In the 2P strategy, the dietary concentration of standardised ileal lysine (LYSd) per MJ of net energy (NE) was 0.9 g up to 65 kg body weight (at the pen level, six pigs/pen) and 0.7 g thereafter. In the 3P strategy, the finishing phase was split in two and the LYSd content reduced to 0.6 g/MJ from 95 kg body weight. In the 5P strategy, the LYSd content was 1.00, 0.90, 0.75, 0.70 and 0.60 g LYSd/MJ, successively; with the transition from one feed to another based on the nutritional profile (secured with a 10% margin) available for each sex. In trial 1, the increased LYSd supply at the beginning of the growing phase (from 28-45 kg) was expected to improve the match between supplies and requirements; it tended to improve the feed conversion ratio calculated from 28-65 kg (2.13 vs 2.22; P = 0.08). In contrast, the decreased LYSd supply during the late finishing period impaired growth rate and feed efficiency when intake was below the theoretical requirement (trial 1), but also when requirements were theoretically met (trial 2). Results of the present study illustrate the technical benefit of a reduced LYSd deficiency at the beginning of the fattening period as well as the need to update the nutritional profile used as the reference to implement precision feeding.

2020

Effets des conditions de granulations des aliments sur les performances des porcs en engraissement

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Didier Gaudré et al., 52e Journées de la Recherche Porcine (FRA), 4 et 5 février 2020, Paris, p. 99-104

Cette étude s’inscrit dans le prolongement de travaux menés sur l’effet de la granulation sur l’utilisation digestive de l’énergie de la ration chez le porc à l’engrais. Le premier essai porte sur l’effet de la granulation et de la température de granulation d’un aliment composé de matières premières dont l’utilisation digestive est améliorée par la granulation. Un même régime est comparé sous forme de farine (FAR) et de granulés préparés à basse (R1) et haute (R2) température sur 72 mâles castrés élevés en case individuelle. Le second essai compare l’effet de la température de granulation et de la composition de l’aliment sur la base de quatre régimes distribués à 2 x 128 mâles castrés et femelles (32 cases de quatre porcs). Les régimes R1 et R2 précédents, formulés à 9,5 MJ d'énergie nette (EN)/kg, sont comparés à deux autres régimes (R3 et R4) granulés à température haute et formulés pour une teneur en EN de 9,8 MJ/kg. Le régime R3 contient des matières grasses en plus des matières premières déjà incorporées dans R1 et R2. Le régime R4 est formulé à partir de matières premières répondant peu ou pas à la granulation. Le régime R1 permet d’obtenir un indice de consommation amélioré de 5% par rapport au régime FAR (essai 1) et des performances équivalentes au régime R4 (essai 2). La granulation à haute température (R2) ne permet pas de gain de performances par rapport à celles obtenues avec le régime FAR (essai 1), tandis que l’ajout de matières grasses dans ces conditions (R3) affecte négativement la composition corporelle (essai 2).

ENG

Influence of processing conditions of pellets on performance of growing-finishing pig

This study followed research assessing the improvement of energy digestibility due to diet pelleting on the growing-finishing pig. The first trial focused on pelleting and pelleting temperature effects on a diet composed of raw materials whose energy digestibility was previously assessed to be improved by pelleting. The same diet was compared in the form of meal (FAR) and pellets conditioned at low (R1) and high (R2) temperature on 72 castrated males reared in individual cases. In the second trial, two batches of 128 castrated males (32 pens, 4 pigs/pen) and gilts were used to characterise the effects of pelleting temperature and diet composition. Diets R1 and R2 of the trial 1 were used again and compared to two other diets (R3 and R4) pelleted at high temperature and formulated for a higher net energy content than R1 and R2 (9.8 vs 9.5 MJ/kg). Fat was incorporated in diet R3 in addition to the raw materials already incorporated in R1 and R2. Formulation of diet R4 was performed with feedstuffs whose energy digestibility was not improved by pelleting. Feed conversion ratio was improved by 5% with R1 compared to the FAR diet (trial 1) and performances were equivalent to those obtained with diet R4 (trial 2). In contrast, similar performances were obtained with the high pelleting temperature (R2) and the FAR diet (trial 1), while the addition of fat in such conditions (R3) impaired the body composition (trial 2).

2020

Processing of partly defatted meals fro m European soybeans and nutritional value for broilers and piglets

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Eric Royer (anciennement IFIP, actuellement IDELE) et al., colloque final du projet Feed-a-gene, 22-24 janvier 2020, Rennes, poster

The study determined the influence of different processes to produce good quality soy bean meal (SBM) with 46-52 % crude protein, 4-8 % residual oil and trypsin inhibitor content below 8 TIU/mg. Such extruded-expelled SBM produced in medium-sized crushing plants from local and GMO-free European soybean crops could have interesting nutritional values.

PDF icon Eric Royer et al., colloque final du projet Feed-a-gene, 22-24 janvier 2020, Rennes, poster
2020

Environmental assessment of new European protein sources for feed (Task 6.2). Part 1 - at feedstuff perimeter

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Sandrine Lespagnol et al., Colloque final du projet Feed-a-gene, 22-24 janvier 2020, Rennes, poster

The use of Brazilian soybean is controversial in Europe because of its environmental impact due to deforestation and the use of genetically modified organism.

PDF icon Colloque final du projet Feed-a-gene, 22-24 janvier 2020, Rennes, poster
2020

Environmental assessment of new European protein sources for feed (Task 6.2). Part 2 - at animal product perimeter

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Sandrine Espagnol et al., Colloque final du projet Feed-a-gene, 22-24 janvier 2020, Rennes, poster

Assessing the environmental consequences for animal products (pig and poultry) of using innovative protein sources to replace Brazilian soybean meal in the feed.

PDF icon Sandrine Espagnol et al., Colloque final du projet Feed-a-gene, 22-24 janvier 2020, Rennes, poster
2020

Do farming conditions influence brominated flame retardant levels in pig and poultry products?

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A. Huneau-Salaün (Anses) et al., Animal, 2020, 14 janvier, 9 pages

Brominated flame retardants (BFR) are primarily used as flame retardant additives in insulating materials. These lipophilic compounds can bioaccumulate in animal tissues, leading to human exposure via food ingestion. Although their concentration in food is not yet regulated, several of these products are recognised as persistent organic pollutants; they are thought to act as endocrine disruptors. The present study aimed to characterise the occurrence of two families of BFRs (hexabromocyclododecane (HBCDD) and polybrominated diphenyl ethers (PBDE)) in hen eggs and broiler or pig meat in relation to their rearing environments. Epidemiological studies were carried out on 60 hen egg farms (34 without an open-air range, 26 free-range), 57 broiler farms (27 without an open-air range, 30 free-range) and 42 pig farms without an open-air range in France from 2013 to 2015. For each farm, composite samples from either 12 eggs, five broiler pectoral muscles or three pig tenderloins were obtained. Eight PBDE congeners and three HBCDD stereoisomers were quantified in product fat using gas chromatography-high-resolution mass spectrometry, or high-performance liquid chromatography-tandem mass spectrometry, respectively. The frequencies of PBDE detection were 28% for eggs (median concentration 0.278 ng/g fat), 72% for broiler muscle (0.392 ng/g fat) and 49% for pig muscle (0.403 ng/g fat). At least one HBCDD stereoisomer was detected in 17% of eggs (0.526 ng/g fat), 46% of broiler muscle (0.799 ng/g fat) and 36% of pig muscle (0.616 ng/g fat). Results were similar in concentration to those obtained in French surveillance surveys from 2012 to 2016. Nevertheless, the contamination of free-range eggs and broilers was found to be more frequent than that of conventional ones, suggesting that access to an open-air range could be an additional source of exposure to BFRs for animals. However, the concentration of BFRs in all products remained generally very low. No direct relationship could be established between the occurrence of BFRs in eggs and meat and the characteristics of farm buildings (age, building materials). The potential presence of BFRs in insulating materials is not likely to constitute a significant source of animal exposure as long as the animals do not have direct access to these materials.

2020

Combining a bioclimatic and a growth model to assess the effect of management practices and building ambiance on growing pig performances at the batch level

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Ludovic Brossard (INRA) et al.,9 Workshop on Modelling Nutrient Digestion and Utilization in Farm Animals,Ubatuba Itamambuca, Brésil, 14 – 16 septembre 2019, poster

Most pigs in the EU are reared in rooms with controlled ambient conditions. Bioclimatic models represent and predict the energy balance and the direct energy consumption at the room level, based on characteristics of the building, management of the climate control tool and average performance of pigs. Available growth models usually simulate performance of animals, including indirect energy (i.e. feed intake), under thermoneutral conditions.

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2019

Des fibres pour plus de bien-être en engraissement

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Didier Gaudré, Réussir Porc/Tech Porc (FRA), 2019, n° 272, octobre, p. 32-33

L’intérêt des fibres dans l’aliment des porcs charcutiers pourrait être relancé par la prise en compte du bien-être animal.

PDF icon Didier Gaudré, Réussir Porc/Tech Porc (FRA), 2019, n° 272, octobre, p. 32-33
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

Toolbox de l'Ifip audite les bâtiments sur smartphone

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Michel Marcon, Réussir Porc/ Tech Porc (FRA), 2019, n° 271, septembre, p. 50-51

L’application Toolbox mise au point par l’Ifip propose quatre calculettes pour un auto-audit simple et rapide de la ventilation, du chauffage, des équipements et de la conduite.

PDF icon Michel Marcon, Réussir Porc/ Tech Porc (FRA), 2019, n° 271, septembre, p. 50-51
2019

Digestive efficiency is a heritable trait to further improve feed efficiency in pigs

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Vanille Déru (INRA/ France Génétique Porc) et al., 70th Annual meeting of the European Federation of Animal science (EAAP), 26-30 août 2019, Ghent, Belgique, visuels d'intervention

The use of diets with dietary fibres 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 with fibres on individual digestive efficiency coefficients, and to estimate their heritabilities and genetic correlations with other production traits. A total of 480 Large White pigs were fed a high fibre diet (FD) and 547 of their sibs were fed a conventional diet (CO). For each animal, digestibility coefficients (DC) of energy, organic matter, and nitrogen were predicted from faeces samples analysed with near infrared spectrophotometry.

Individual daily feed intake (DFI), average daily gain (ADG), feed conversion ratio (FCR) were recorded as well as lean mean percentage (LMP), carcass yield (CY) and meat quality traits. The FD pigs had significantly lower DC than CO pigs (-5 to 6 points). The DC were moderately to highly heritable, with heritabilities ranging from 0.41±0.14 to 0.50±0.15 in CO, and from 0.62±0.17 to 0.70±0.17 in FD. Genetic correlations between DC and ADG (from -0.65 to -0.52), FCR (from -0.75 to -0.33), and DFI (from -0.83 to -0.57) were high and negative in both diets. The DC were slightly unfavourably correlated with CY (from -0.24 to -0.11) and favourably correlated with LMP (from 0.03 to 0.29). Genetic correlations were generally unfavourable with meat quality traits (from -0.75 to 0.09). Genetic correlations of DC between diets were close to 1, so no interaction between feed and genetics could be evidenced for these traits. To conclude, DC measured in farm conditions are interesting criteria for selection to account for animal digestive capacity, due to moderate to high heritabilities and high genetic correlations with FCR.

However, according to these first results, it would have to be selected together with carcass yield and meat quality to avoid adverse genetic trends on the latter traits.

Document réservé Espace Pro, veuillez vous identifier
2019

Upgraded EU rapeseed meal improves growth performance and nutrient digestibility in growing pigs

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Melo ADB (IRTA, Espagne) et al., 70th Annual meeting of the European Federation of Animal science (EAAP), 26-30 août 2019, Ghent, Belgique, p. 421, poster

Rapeseed meal (RSM), a by-product of oil industry, contains large amounts of protein but also contains a high fibre content that limit its use to non-ruminant animals. Tail-end dehulled RSM presents high protein content and reduced fibre fraction, resulting more attractive for animal feeding. Also, pelletizing process could contribute to improve the nutritive value of dehulled RSM. The aim of the present study is evaluating the growth performance and nutrient digestibility of growing pig´s diet based on dehulled RSM, combined with die size and steam from pelletizing process. A 2×2×2 factorial design was used with conventional (35% CP) or upgraded RSM (40% CP), 4×40 or 4×60 mm of die size, processed with or without steam. Conventional or upgraded RSM were included in similar proportion (22.5%) as the only protein source and no adjustment of synthetic amino acids (AA) was done.

Diets were provided ad libitum overall the trial, which lasts 49 days. One-hundred forty-four pigs weighing 27.55 kg were allocated at 72 pens, 2 pigs for pen (male and female), totalling 9 blocks of live weight per treatment. At the last week of experiment, faecal samples were collected for 3 days and lyophilized before lab analyses. Growth performance and nutrient digestibility were used as responsive criteria. Pig´s weight gain and feed conversion ratio were improved by dehulled RSM. Feed efficiency is improved in pigs fed dehulled RSM, 4×60 mm die size with steam on pelleting process. The digestibility of energy, crude protein, lysine, methionine, threonine and valine is improved in diet based on dehulled RSM and no affected by die size. A greater nutrient content and availability such as found in the diet based on dehulled RSM is crucial to improve animal performance and it was enhanced after pelleting process.

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

Addition of vitamin E in pigs feed: could prevent cured-meat promotion of colon carcinogenesis in rats

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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

Based on epidemiological studies, excessive consumption of cured meats induces a slight, but significant, increase in the risk of developing colorectal cancer [1]. Among the various hypotheses, recent studies have proposed the central role of heme iron in this positive association. Heme iron catalyzes the formation of genotoxic and cytotoxic nitroso-compound (NOCs) and lipid peroxidation end products (alkenals). Based on the important role of peroxidation and nitrosylation in the effect on cancer risk, our recent studies has made possible to propose a limitation of this effect via the enrichment of cured meat products with vitamin E during their manufacture [2]. In addition, supplementation in pig diet would also appear interesting to protect cured meat from the formation of carcinogenic substances, NOCs and alkenals [3]. In the present study we assess for the first time the effect of adding vitamin E in pig feed on preventing the promotion of colorectal carcinogenesis in rats fed a sausage-based diet from supplemented animals compare to sausage-based diet from control animals .

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. 859-860
2019

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