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See detailForage plants as alternative feed resource for sustainable pig production in the tropics: a review
Kambashi Mutiaka, Bienvenu ULg; Boudry, Christelle ULg; Picron, Pascale ULg et al

in Animal (in press)

Globally, pressure on concentrate feed resources is increasing, especially in the tropics where many countries are net importers of food. Forage plants are a possible alternative but their use as feed ... [more ▼]

Globally, pressure on concentrate feed resources is increasing, especially in the tropics where many countries are net importers of food. Forage plants are a possible alternative but their use as feed ingredients for pigs raises several issues related to their higher fibre and plant secondary metabolites contents as well as their lower nutritive value. In this paper, the nutritive value of several forage species as well as the parameters that influence this nutritive value in relationship to the plant family, the physiological stage, the plant part and the preservation method (fresh, hay and silage) are reviewed. The influence of the breed and the physiological status of the animal on animal voluntary intake of fibre-rich ingredients, digestibility as related to gastrointestinal volume and transit time and growth performances are also discussed. The final section highlights the assets and drawbacks of forage plants in pig diets and stresses the need for proper economic evaluation to conclude on the benefits of the use of forage plants in pig feed. [less ▲]

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See detailIssues related to protein fermentation in the intestines of pigs
Bindelle, Jérôme ULg

Scientific conference (2014, March 27)

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See detailAnalyzing relationships between cattle grazing behavior and pasture attributes using the inertial measurement unit of a mobile phone.
Andriamandroso, Andriamasinoro ULg; Lebeau, Frédéric ULg; Bindelle, Jérôme ULg

Poster (2014, February 07)

The recent technological developments are boosting the opportunities of accurate method to monitor resource use efficiency in agriculture and in their wake, precision livestock farming (PLF) has ... [more ▼]

The recent technological developments are boosting the opportunities of accurate method to monitor resource use efficiency in agriculture and in their wake, precision livestock farming (PLF) has experienced huge developments over the past decade. These developments focus on the optimization of individual performances of farm animals as opposed to herd management. The aim of this paper is to explore a method to detect accurately and to analyze changes in cattle's behaviors on pasture during grazing time using signals from the inertial measurement unit (IMU) of mobile devices as a possible tool to manage individual grazing behavior. Commercial iPhones or iPods, which include a 3-axis accelerometer, a gyroscope and a GPS sensor, are fitted on a halter and placed on the neck of grazing cows. The acquired IMU data are recovered using an open source application (Sensor Data, Wavefrontlabs) and analyzed in a “white-box” model of the cows’ movements. First results using time-domain analysis allowed the detection of grazing behaviors showed accuracies ranging between 84% and 96%, attesting the relevancy of the method. Refined signal processing method will improve the detection but will also inform more about the relative link between the behaviors and the pasture attributes such as sward height, composition and nutritive value. [less ▲]

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See detailNutritive value of tropical forage plants fed to pigs in the Western provinces of the Democratic Republic of the Congo
Kambashi Mutiaka, Bienvenu ULg; Picron, Pascale ULg; Boudry, Christelle ULg et al

in Animal Feed Science & Technology (2014), 191

The nutritive value of 20 forage plants commonly used for feeding pigs in the Democratic Republic of the Congo was studied to determine chemical composition, protein amino acid profiles, mineral content ... [more ▼]

The nutritive value of 20 forage plants commonly used for feeding pigs in the Democratic Republic of the Congo was studied to determine chemical composition, protein amino acid profiles, mineral content, and in vitro digestibility using a two-step method combining an enzymatic pepsin and pancreatin hydrolysis followed by a 72 h gas-test fermentation. The highest protein contents (270–320 g/kg DM) were obtained for Vigna unguiculata, Psophocarpus scandens, Leucaena leucocephala, Manihot esculenta, and Moringa oleifera. Grasses, Acacia mangium, and Eichhornia crassipes, showed the lowest crude protein (CP) and highest NDF contents. Cajanus cajan and Trypsacum andersonii had the most balanced amino acid profile, being deficient in lysine and slightly deficient in histidine, while Megathyrsus maximus displayed the highest number of essential amino acids deficiencies. High mineral contents were obtained from, in ascending order, with M. oleifera, V. unguiculata, E. crassipes, Ipomea batatas and Amaranthus hybridus. In vitro dry matter digestibility ranged from 0.25 to 0.52, in vitro CP digestibility from 0.23 to 0.80, in vitro energy digestibility from 0.23 to 0.52. M. esculenta, M. oleifera, I. batatas, Mucuna pruriens, V. unguiculata, P. scandens and A. hybridus showed high digestibilities for all nutrients. Gas production during fermentation of the pepsin and pancreatin-indigestible fraction of the plants varied from 42 ml/g DM for A. mangium to 202 ml/g DM for I. batatas (P<0.001). Short-chain fatty acid production during fermentation varied from 157 to 405 mg/g of the pepsin and pancreatin indigestible fraction. It is concluded that some of these species are interesting sources of proteins and minerals with a good digestibility that might be used more economically than concentrate, especially in smallholder production systems, to improve pig feeding, mineral intake and intestinal health in pigs reared in the tropics. [less ▲]

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See detailRapport scientifique et technique final du projet HYDRASANTE
Boudry, Christelle ULg; François, Emmanuelle ULg; Nollevaux, Géraldine et al

Report (2013)

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See detailHedges and woody strips browsing by cattle on pasture in Wallonia, Belgium
Vandermeulen, Sophie ULg; Pascal, Mathilde; Marche, Christian et al

in Michalk, David L.; Millar, Geoffrey D.; Badgery, Warwick B. (Eds.) et al Revitalising Grasslands to Sustain our Communities: Proceedings 22nd International Grassland Congress, Sydney 15-19 september 2013 (2013, September)

Agri-environmental measures promote woody hedges along meadows in Wallonia, raising the interest in tree and shrub as forage in intensive mixed dairy temperate production systems. This study aimed at (1 ... [more ▼]

Agri-environmental measures promote woody hedges along meadows in Wallonia, raising the interest in tree and shrub as forage in intensive mixed dairy temperate production systems. This study aimed at (1) determining the influence of an access to hedges on the grazing behavior of young cattle and (2) assessing the fermentation characteristics of woody species promoted in Wallonia. Twelve heifers, divided in two groups, were set to graze a ryegrass and white clover-based pasture in May 2012. The first group had access to a hedge composed of 12 temperate tree and shrub species, and the second group grazed the pasture only. The grazing and browsing behavior of the animals was recorded for 4 weeks along with pasture biomass availability, using the hand-plucking method. Samples of the 12 tree species were fermented using rumen fluid in an automated gas pressure monitoring system and gas production kinetics compared to ryegrass and white clover. Results suggest that the feeding behavior was influenced by the hedge. Grazing time of the control group was higher than heifers that could browse woody foliage (P<0.05). Browsing was especially noticeable when grass availability on pasture was lowest. In vitro ruminal fermentation kinetics differed among species (P<0.01) with Populus nigra and Fraxinus excelsior showing a potential of fermentation similar to herbaceous forages. It can be concluded that due to the browsing by cattle some woody species could be interesting as complementary feeding. Besides their attributes regarding the agricultural landscape, their feeding qualities should be considered when planting the hedges. [less ▲]

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See detailA mucin-enriched fermentation model to assess prebiotic potential of new indigestible carbohydrates
Boudry, Christelle ULg; Tran, Thi Hanh Tham ULg; Blaise, Yannick ULg et al

in 64th Annual Meeting of the European Federation of Animal Science (2013, August 29)

Screening the prebiotic potential of novel indigestible carbohydrates (ICH) is a challenge for feed and food industry and in vitro models are increasingly used for such purposes. Recently extracellular ... [more ▼]

Screening the prebiotic potential of novel indigestible carbohydrates (ICH) is a challenge for feed and food industry and in vitro models are increasingly used for such purposes. Recently extracellular binding proteins responsible for the adherence to intestinal mucus were described for several Lactobacillus species. As this genus is known for its beneficial effect on gut health, we enriched the in vitro gas fermentation model with mucin in order to evaluate the prebiotic potential of 5 ICH. Mucin-coated microcosms (MCM) were prepared as described by Van den Abbeele et al. (2012, Microbial Biotechnology, 5, 106-115) and introduced in the fermentation bottles with an inoculum prepared from fresh faeces of 3 sows mixed with a nutritive buffer solution. Fermentation was performed at 39°C, using 200 mg of substrate, 30 ml of inoculum and 6 MCM, yielding approx. 20 mg mucin each, in 140 ml glass bottles. A first study was performed with inulin and cellulose as substrates, with and without mucus in the bottles. A second study was performed with 5 substrates (inulin, IMO, beet pulp POS, cellobiose and gluconate) in presence of mucus. After 8 and 72h, SCFA and the microflora of fermentation broth was analysed as well as the microflora on the MCM. The comparison of the microflora evolution with and without mucus showed a better development of the Lactobacillus in the fermentation broth, mainly in presence of inulin. The development of the Lactobacillus genus allowed the classification of the 5 substrates tested in the second study (Inulin > IMO > Gluconate > Cellobiose > POS)(P < 0.05) which was not possible without mucus (P > 0.05). Inulin and IMO showed also the highest development of Bifidobacteria (P < 0.05) and the highest levels of butyrate production (P < 0.05) compared to the three other substrates, indicating a high prebiotic potential. [less ▲]

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See detailNutritive value of four tropical forage legume hays fed to pigs in the Democratic Republic of Congo
Kambashi Mutiaka, Bienvenu ULg; Boudry, Christelle ULg; Picron, Pascale ULg et al

in 64th Annual Meeting of the European Federation of Animal Science (2013, August)

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See detailInfluence de l'écartement et de la fertilisation azotée sur le rendement et la qualité des semences de Brachiaria ruziziensis en climat tropical sub-humide
Adjolohoun, Sébastien; Bindelle, Jérôme ULg; Adandedjan, CLaude et al

in Fourrages (2013), 216

Influence of row spacing and nitrogen fertilizer on Brachiaria ruziziensis (Germain and Evrard) Crins seed production and quality in a tropical subhumid climate Row spacing and nitrogen fertilizer had ... [more ▼]

Influence of row spacing and nitrogen fertilizer on Brachiaria ruziziensis (Germain and Evrard) Crins seed production and quality in a tropical subhumid climate Row spacing and nitrogen fertilizer had influenced in various way seed yield and quality. A 3-year experiment was conducted on ferruginous soils of subhumid zone of West Africa to evaluate the influence of 3 row spacings (20, 40 and 80 cm) and 4 nitrogen levels (0, 50, 100 and 200 kg Nha-1) on Brachiaria ruziziensis (Germain and Evrard) Crins (commun type) seed production, quality and dry matter production. Rainfall recorded during experiment was between 1050 and 1210 mm/year. Plots were allocated in a completely randomised block design with 4 replications per treatment. The results show that seed yield, seed fertility, diaspore and caryopsis weight varied between 26 and 114 kgha-1, 45 and 93 %, 327 and 601 mg and 219 and 475 mg, respectively. Effects of row spacing and N levels were variable through years. During the first experiment year, 20 and 40 cm row width produced significantly (p < 0.01) more seed than 80 cm row spacing but there was no significant difference between 20 and 40 cm row spacings. In the two subsequent years, row spacing had not influence seed yield. For fertilizer, N level of 50 or 100 kgha-1 had produced significantly more seed than 0 or 200 kg Nha-1 during the first year but no significant difference had been observed between 50 and 100 kg Nha-1. In the second year, seed yield ranged in the order: F50 = F100 > F200 > F0 (p < 0.05). In the third year, the ranking was: F100 > F50 > F200 > F0 (p < 0.05). Row spacing had no influence on seed fertility and seed germination. N fertilizer had significantly influenced seed fertility, diaspore weight and germination but had no effect on caryopsis weight or germination rate. It can be concluded that spacing row of 40 cm would be recommended. N fertilizer input at the rate of 50 kgha-1 is necessary during the establishment year. In the second and third years, 50 and 100 kg of Nha-1 should be applied, respectively, for optimum seed yield and quality. [less ▲]

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See detailThe proportion of ungrazed area of the pasture (PUP) determines when forage intake and diet quality decline in grazing systems
Benvenutti, Marcelo A.; Pavetti, Daniel R.; Cangiano, Carlos A. et al

in Proceedings of the 22nd International Grassland Congress (2013)

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See detailSysteme de production intégré à l'échelle des petites exploitations familiales en périphérie de Kinshasa
Vautravers, Emilie; Bindelle, Jérôme ULg

in Malumba Kamba, Paul (Ed.) GESTION DURABLE DES AGRO-SYSTÈMES EN MILIEU TROPICAL HUMIDE (2013)

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See detailReproductive phenology stages and their contributions to seed production of two Arachis pintoi ecotypes (CIAT 17434 and CIAT 18744) in Sudanian savanna region of Benin, West Africa
Adjolohoun, Sebastien; Bindelle, Jérôme ULg; Adandedjan, Claude et al

in Agricultural Science Research Journal (2013), 3(6), 152-157

Flowering pattern, reproductive stage period (flowering, peg production, pod production and seed maturation) and efficiency of each stage for mature fruit production of two Arachis pintoi ecotypes (CIAT ... [more ▼]

Flowering pattern, reproductive stage period (flowering, peg production, pod production and seed maturation) and efficiency of each stage for mature fruit production of two Arachis pintoi ecotypes (CIAT 17434 and CIAT 18744) were investigated in West Africa. Plants were sown in a randomized complete block design with four replicates per ecotype. Data collected over 3 years were analyzed with ANOVA. First flowers appeared on average 26 and 45 d after sowing for CIAT 17434 and CIAT 18744, respectively. Pegs began to extend about 8 and 18 d after anthesis; pod initiation about 22 and 40 d after anthesis and seed fully matured about 85 and 120 d after anthesis, respectively. CIAT 17434 produced (2269 flowers/plant) significantly (p≤0.05) more flower than CIAT 18744 (761 flowers/plant) during 7 months flowering. Conversely, flower efficiency for peg production was significantly (p≤0.05) higher for CIAT 18744 (8.14%) than for CIAT 17434 (4.02%). From 85 to 97% of pegs produced pods for both ecotypes. This research showed clearly that the principal constraint for effective seed production in particular ecological conditions of West Africa was the quite low efficiency of flowers for pegs production. [less ▲]

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See detailEvaluation de la durabilité des productions porcines en Wallonie : développement d'un outil de modélisation
Picron, Pascale ULg; Boudry, Christelle ULg; Dochain, Denis et al

in 45èmes Journées de la Recherche Porcine (2013)

Garantir la durabilité d’une filière de production implique d’évaluer son impact sur les trois dimensions du développement durable : (1) maîtrise des impacts sur l’environnement, (2) viabilité économique ... [more ▼]

Garantir la durabilité d’une filière de production implique d’évaluer son impact sur les trois dimensions du développement durable : (1) maîtrise des impacts sur l’environnement, (2) viabilité économique, (3) attentes sociétales des éleveurs, des citoyens et des consommateurs. Cette recherche s’inscrit dans le cadre de la révision, par les autorités publiques de Wallonie (Belgique), des critères minimaux permettant la reconnaissance de la qualité différenciée axés sur les 3 piliers de la durabilité. Elle consiste à développer un outil informatique de modélisation mathématique du fonctionnement technico-environnemental de la production porcine et de ses impacts socio-économiques. Le programme est développé dans Matlab. Le modèle s’articule autour des différentes composantes des systèmes de production selon le paradigme orienté-objet. Les nouveaux critères de différenciation qui définiront de nouveaux labels axés sur des attributs de durabilité en constituent les variables motrices : taille de l’exploitation, origine des aliments et des matières premières, logement, indépendance énergétique, effluents, etc. Les impacts sont relevés à chaque étape de production jusqu’à la sortie du porc sur pied de la ferme selon la norme « Analyse de Cycle de Vie » (ACV). L’évaluation environnementale utilise des modèles mécanistiques de flux de composés chimiques, convertis en indicateurs ACV. L’analyse de la dimension sociale s’appuie sur une base de données intégrée, comprenant le temps de travail. Enfin, un modèle économique attestera du dernier volet. L’outil finalisé permettra de prédire les conséquences de choix opérationnels liés aux critères de qualité différenciée au niveau d’une exploitation. [less ▲]

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See detailUse of medium without reducing agent for in vitro fermentation studies by bacteria isolated from pig intestine
POELAERT, Christine ULg; Boudry, Christelle ULg; Portetelle, Daniel ULg et al

in Journal of Animal Science (2012, December), 90(Supplement 4), 387-389

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See detailCréation d'un outil d'évaluation de la durabilité des productions de qualité différenciée en Wallonie
Picron, Pascale ULg; Boudry, Christelle ULg; Lagneaux, Séverine et al

in 12ème Journée d'étude des productions porcines et avicoles (2012, November 28)

L’objectif de cette étude est de comparer simultanément l’impact environnemental, social et économique liés à l’application de différents critères de qualités différenciées. L’outil développé s’articule ... [more ▼]

L’objectif de cette étude est de comparer simultanément l’impact environnemental, social et économique liés à l’application de différents critères de qualités différenciées. L’outil développé s’articule autour de la modélisation des impacts environnementaux d’après la méthodologie ACV et s’appuie sur des matrices techniques (MT) pour l’évaluation sociale et économique. D’un point de vue opérationnel, il s’agit de développer un outil de simulation qui répond aux cahiers des charges minimaux de la qualité différenciée à travers le paramétrage réalisé par l’utilisateur final de l'application. Le modèle est implémenté dans l’environnement de programmation MATLAB R2011a (MathWorks, Natick, MA, USA). [less ▲]

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