References of "Agneessens, Richard"
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See detailFertilization Effects on the Chemical Composition and In Vitro Organic Matter Digestibility of Semi-natural Meadows as Predicted by NIR Spectrometry
Dale, Laura ULg; Thewis, André ULg; Rotar, Ioan et al

in Notulae Botanicae Horti Agrobotanici Cluj-Napoca (2013), 41(1), 42-48

Management of livestock grazing in highly-productive mountain meadows is an important aspect for the economic viability and the environmental impact of a grassland-based farm. The main aim of this study ... [more ▼]

Management of livestock grazing in highly-productive mountain meadows is an important aspect for the economic viability and the environmental impact of a grassland-based farm. The main aim of this study was to build near infrared models to determine the chemical composition and in vitro organic matter digestibility of Romanian meadow forages. The treatments were organic and mineral fertilizer combinations, and forage samples were obtained from three fertilization experiments conducted in the Apuseni Mountains; these samples were analysed using classical and NIR methods. The samples were scanned in the NIR wavelength band. The CRA-W Gembloux ‘local’ calibration models were validated with Romanian meadow forages and then used in order to predict the forage quality of samples. A second objective of the study was to determine the effects of fertilization on forage quality. The results showed a decrease in crude protein content from the NPK treatment (150:75:75), which can be explained by a reduction of Fabaceae plants with this treatment from 17.25% of the populations in the control (semi-natural meadow not fertilized) to 6.25% in the fertilized plots. The decrease in protein content and in vitro organic matter digestibility was related to a reduced Fabaceae presence. Our recommendation is to use mineral fertilization with NPK doses less than 100:50:50 to improve meadow productivity; meanwhile organic fertilization can also be used to complement and maintain biodiversity and forage quality. [less ▲]

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See detailDetermination of Romanian alfalfa crude protein and crude fiber contents as well as in vitro organic matter digestibility by NIR spectrometry
Dale, Laura ULg; Thewis, André ULg; Rotar, Ioan et al

in Scientific Papers. Series D, Animal Science (2012, October 04)

Alfalfa (Medicago sativa L.) is a high quality forage which has been used worldwide. The superiority of alfalfa lies in its high yield, high protein content and high digestibility. The aim of this study ... [more ▼]

Alfalfa (Medicago sativa L.) is a high quality forage which has been used worldwide. The superiority of alfalfa lies in its high yield, high protein content and high digestibility. The aim of this study was to develop a simple, fast and non-destructive method, named Near Infrared Spectroscopy (NIRS) to determinate alfalfa quality. To realize this study, alfalfa samples were obtained from Mănăştur Experimental Station – Farm Cojocna in 2008–2009, in one experiment carried out using randomization blocks design with two experimental factors (mineral fertilization and period of harvest). Alfalfa quality was first determinated on 48 samples by classical analyses: crude protein CP (AOAC, 1990), crude fiber CF (Fiber Cap, FOSS, DK) and in vitro organic matter digestibility OMDrt (DeBoever, 1986). Then the samples were scanned by NIRS. Calibration models were performed by PerkinElmer Spectrum Quant + 4.21 program (USA) on the 48 samples determinated by classical analysis. The results showed fully confirmed by acceptable coefficients of determination and standard error of cross-validation (R2=0.96 for CP, 0.94 for CF, 0.98 for OMDrt and SECV=0.77 for CP, 1.35 for CF, 1.13 for OMDrt). Successful results for prediction of other 176 alfalfa samples were then obtained using these calibration models: SEP=0.869 for CP, 1.058 for CF, 1.058 for OMDrt). The highest CP and OMDrt values of alfalfa were obtained in bud stage (22.0% and 66.0% respectively). While for CF, the highest content was registered in the seed formation stage (46.0%). The NIRS technique offers us the possibility to determinate rapidly and easily Romanian alfalfa important parameters, but the system could also be used for the determination of other constituents. [less ▲]

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See detailQuantitative and qualitative study of spelt and wheat fibers in varying milling fractions
Escarnot, Emmanuelle ULg; Agneessens, Richard; Wathelet, Bernard ULg et al

in Food Chemistry (2010), 122

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See detailCorrigendum to "Quantitative and qualitative study of spelt and wheat fibres in varying milling fractions
Escarnot, Emmanuelle; Agneessens, Richard; Wathelet, Bernard ULg et al

in Food Chemistry (2010), 122

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See detailInfluence on fertility of Lianol Solapro incorporation in lactation diet
Wavreille, José; Planchon, Viviane; Renaville, Robert ULg et al

in 21 Inter. Pig Vet Society Congress (2010)

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See detailEffet d’un produit fermenté de pomme de terre dans l’aliment de la truie en maternité sur les performances des truies et des porcelets allaités
Wavreille, José; Planchon, Viviane; Renaville, Robert ULg et al

in 42 Journée en recherche porcine (2010)

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See detailInfluence of Lianol Solapro on sow milk production and piglet weight gain
Wavreille, José; Planchon, Viviane; Renaville, Robert ULg et al

in 21 Inter. Pig Vet Society Congress (2010)

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See detailProduit de pomme de terre fermenté comme complément dans l’aliment de la truie en maternité. Effet sur les performances des truies et des porcelets allaités
Wavreille, José; Renaville, Robert ULg; Forier, Rudi et al

in 9ème Journée Productions porcines et avicoles (2009)

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See detailInfluence of source and levels of dietary fiber on in vivo nitrogen excretion pathways in pigs and in vitro fermentation and protein synthesis by fecal bacteria
Bindelle, Jérôme ULg; Buldgen, André; Delacollette, Maud et al

in Journal of Animal Science (2009), 87

The inclusion of dietary fiber (DF) in diets has been suggested as a way to reduce ammonia emission in pig barns because it contributes to a shift in N excretion from urine to feces due to enhanced ... [more ▼]

The inclusion of dietary fiber (DF) in diets has been suggested as a way to reduce ammonia emission in pig barns because it contributes to a shift in N excretion from urine to feces due to enhanced bacterial growth in the intestines. This study compared an in vitro method to measure bacterial protein synthesis during fermentation to in vivo N excretion shift induced by diets differing in DF concentrations and solubility. The first experiment measured the effect of graded concentrations of sugar beet pulp (SBP; 0, 10, 20 and 30%) in corn-soybean meal-based diets on in vivo N excretion partitioning between urine and feces. A second experiment investigated the replacement of SBP, rich in soluble DF, by oat hulls (OH), rich in insoluble DF (20:0; 10.5:10.5; 0:22%, respectively). In parallel, the fermentation characteristics of the dietary carbohydrates not digested in the small intestine was evaluated in an in vitro gas test, based on their incubation with colonic microbiota, using a mineral buffer solution enriched with 15N. The N originating from the buffer solution incorporated into the bacterial proteins (BNI) was measured when half of the final gas volume was produced (T/2: 8.5 to 14.5 h of fermentation) and after 72 h of fermentation. Short-chain fatty acids (SCFA) were determined in the liquid phase. In the first experiment, the inclusion of SBP linearly decreased urinary N excretion from 0.285 to 0.215 g N excreted in urine per g N ingested and urinary-N:fecal–N excretion ratio from 2.171 to 1.177 (P < 0.01). In the second experiment, the substitution of SBP by OH linearly increased urinary-N:fecal–N excretion ratio (P = 0.009). Unlike SCFA production, BNI was greater at T/2 than at 72 h of fermentation. Sugar beet pulp enhanced BNI linearly (P < 0.001): 2.01, 2.06 and 2.35 mg g-1 diet with 10, 20 and 30% SBP, respectively, as compared to 1.51 mg for the control diet. The substitution of SBP by OH decreased BNI (P < 0.01). With the exception of final gas production, all in vitro kinetics characteristics and BNI were correlated to in vivo N excretion parameters and regression equations for the prediction of N excretion pathways from in vitro data were identified. Even if the presence of resistant starch in the diet might alter the composition of the fibrous residue that is fermented, it can be concluded that the in vitro method is a possible useful tool for the formulation of diets reducing the effects of pig production on the environment. [less ▲]

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See detailQualité des fourrages en Région Wallonne
Decruyenaere, Virginie; Agneessens, Richard; Toussaint, Bernard et al

Book published by REQUASUD (2008)

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See detailThe source of fermentable carbohydrates influences the in vitro protein synthesis by colonic bacteria isolated from pigs
Bindelle, Jérôme ULg; Buldgen, André; Wavreille, José et al

in Animal (2007), 1(8), 1126-1133

Two in vitro experiments were carried out to quantify the incorporation of nitrogen (N) by pig colonic bacteria during the fermentation of dietary fibre, including non-starch polysaccharides and resistant ... [more ▼]

Two in vitro experiments were carried out to quantify the incorporation of nitrogen (N) by pig colonic bacteria during the fermentation of dietary fibre, including non-starch polysaccharides and resistant starch. In the first experiment, five purified carbohydrates were used: starch (S), cellulose (C), inulin (I), pectin (P) and xylan (X). In the second experiment, three pepsin–pancreatin hydrolysed ingredients were investigated: potato, sugar-beet pulp and wheat bran. The substrates were incubated in an inoculum, prepared from fresh faeces of sows and a buffer solution providing 15N-labelled NH4Cl. Gas production was monitored. Bacterial N incorporation (BNI) was estimated by measuring the incorporation of 15N in the solid residue at halftime to asymptotic gas production (T/2). The remaining substrate was analysed for sugar content. Short-chain fatty acids (SCFA) were determined in the liquid phase. In the first experiment, the fermentation kinetics differed between the substrates. P, S and I showed higher rates of degradation (P,0.001), while X and C showed a longer lag time and T/2. The sugar disappearance reached 0.91, 0.90, 0.81, 0.56 and 0.46, respectively, for P, I, S, C and X. Among them, S and I fixed more N per gram substrate (P,0.05) than C, X and P (22.9 and 23.2mg fixed N per gram fermented substrate v. 11.3, 12.3 and 9.8, respectively). Production of SCFA was the highest for the substrates with low N fixation: 562 and 565 mg/g fermented substrate for X and C v. 290 to 451 for P, I and S (P,0.01). In the second experiment, potato and sugar-beet pulp fermented more rapidly than wheat bran (P,0.001). Substrate disappearance at T/2 varied from 0.17 to 0.50. BNI were 18.3, 17.0 and 10.2 fixed N per gram fermented substrate, for sugar-beet pulp, potato and wheat bran, respectively, but were not statistically different. SCFA productions were the highest with wheat bran (913mg/g fermented substrate) followed by sugar-beet pulp (641) and potato (556) (P,0.05). The differences in N uptake by intestinal bacteria are linked to the partitioning of the substrate energy content between bacterial growth and SCFA production. This partitioning varies according to the rate of fermentation and the chemical composition of the substrate, as shown by the regression equation linking BNI to T/2 and SCFA (r250.91, P,0.01) and the correlation between BNI and insoluble dietary fibre (r520.77, P,0.05) when pectin was discarded from the database. [less ▲]

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See detailBacterial protein synthesis in the pig's large intestine varies according to the fermented non-starch polysaccharides.
Bindelle, Jérôme ULg; Leterme, Pascal; Destain, Jean-Pierre ULg et al

in Journal of Animal Science (2007), 85(Suppl. 2), 114-115

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See detailCaractérisation de la composition chimique et de la valeur de l'épeautre (Triticum spelta) en alimentation des ruminants
Lecomte, Philippe; Boreux, Magalie; Agneessens, Richard et al

in INRA; Institut de l'Elevage (Eds.) 3ème Renc. Rech. Ruminants (1996, December 05)

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See detailApproach to the use of Near Infrared Spectrometry for the estimation of microbial nitrogen contamination of forages during ruminal incubation in nylon bag.
Lecomte, Philippe; Kamoun, Mohammed; Agneessens, Richard et al

in Giesecke, D. (Ed.) Proceedings of the Society of Nutrition Physiology. (1994, September)

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