References of "Beckers, Yves"
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See detailPotentiel zootechnique du froment d'hiver chez le poulet de chair.
Beckers, Yves ULg; Wéry, O.; Thewis, André ULg

Article for general public (2004)

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See detailEffect Of Imbalance Between Energy And Nitrogen Supplies On Microbial Protein Synthesis And Nitrogen Metabolism In Growing Double-Muscled Belgian Blue Bulls
Valkeners, Damien; Thewis, André ULg; Piron, Fabien ULg et al

in Journal of Animal Science (2004), 82(6), 1818-1825

Six double-muscled Belgian Blue bulls (initial weight: 345 ± 16 kg) with cannulas in the rumen and proximal duodenum were used in two juxtaposed 3 × 3 Latin squares to study the effect of a lack of ... [more ▼]

Six double-muscled Belgian Blue bulls (initial weight: 345 ± 16 kg) with cannulas in the rumen and proximal duodenum were used in two juxtaposed 3 × 3 Latin squares to study the effect of a lack of synchronization between energy and N in the rumen on microbial protein synthesis and N metabolism by giving the same diet according to three different feeding patterns. The feed ingredients of the diet were separated into two groups supplying the same amount of fermentable OM (FOM), but characterized by different levels of ruminally degradableN (RDN). The first group primarily provided energy for the ruminal microbes (14.6 g of RDN/kg of FOM), and the second provided N (33.3 g of RDN/kg of FOM). These two groups were fed to the bulls simultaneously or alternately with the aim of creating three different time periods of imbalance (0, 12, or 24 h) between energy and N supplies in the rumen. The introduction of imbalance affected neither microbial-N flow at the duodenum (P = 0.65) nor efficiency of growth (P = 0.69), but decreased (P = 0.016) the NDF degradation in the rumen 12.2% for a 12-h period of imbalance. N retention was not affected by imbalance (P = 0.53) and reached 57.8, 58.5, and 54.7 g/d, respectively, for 0-, 12- and 24-h imbalance. It seems that the introduction of an imbalance of 12 or 24 h between energy and N supplies for the ruminal microbes by altering the feeding pattern of the same diet does not negatively influence microbial protein synthesis or N retention by the animal. Nitrogen recycling in the rumen plays a major role in regulating the amount of ruminally availableNand allows for continuous synchronization of N- and energy-yielding substrates for the microorganisms in the rumen. Therefore, a lack of synchronization in the diet between the energy and N supplies for the ruminal microbes is not detrimental to their growth or for the animal as long as the nutrient supply is balanced on a 48-h basis. Thus, these dietary feeding patterns may be used under practical feeding conditions with minimal effect on the performance of ruminant animals. [less ▲]

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See detailLes tourteaux de lin : intérêts et limites en alimentation bovine
Beckers, Yves ULg

Scientific conference (2003, March 20)

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See detailValorisation du froment d'hiver dans l'alimentation du poulet de chair.
Wéry, O.; Thewis, André ULg; Beckers, Yves ULg

Article for general public (2003)

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See detailProduire du veau de boucherie en Wallonie : une opportunité pour les élevages laitiers.
Beckers, Yves ULg; Delbouille, L.; Thewis, André ULg

Article for general public (2003)

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See detailDétermination des acides aminés limitants chez le taurillon BBBc recevant une ration à base d'ensilage de maïs
Frand, Xavier; Froidmont, Eric; Beckers, Yves ULg et al

in Rencontres autour des Recherches sur les Ruminants (2003), 10

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See detailEffect of imbalance between energy and nitrogen supplies on microbial protein synthesis in growing double-muscled Belgian Blue bulls.
Valkeners, Damien; Beckers, Yves ULg; Piron, Fabien ULg et al

in Proceeding of the British Society of Animal Science 2003 (2003)

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See detailEffect of hemicellulase preparations on performance parameters, intestinal viscosity and apparent nutrient digestibility of male broilers fed a wheat-based diet
Vandeplas, Sabrina ULg; Beckers, Yves ULg; Thewis, André ULg

Poster (2003)

Three experiments were conducted to investigate the mode of action of 5 hemicellulases supplemented to wheat-based broiler diets. Performances parameters and digesta viscosity were measured during growth ... [more ▼]

Three experiments were conducted to investigate the mode of action of 5 hemicellulases supplemented to wheat-based broiler diets. Performances parameters and digesta viscosity were measured during growth period. Total collection of excreta was carried out for determination of AMEn content of the diets and of apparent crude fat, Kjeldahl-nitrogen and crude cellulose digestibilities. Addition of xylanase improve daily body gain by 1 to 6% and feed conversion ration by 1,5 to 4%, as the apparent nutrient digestibility and the content of AMEn in the diets supplemented with enzymes. Although viscosity values seemed not correled to improved performances, Grindazym G shows an increase in the digesta viscosity for all the period of measurement. It can be concluded that the beneficial action of xylanases is more due to the improved release of the nutrients entrapped by the NSP, following degradation of these structures, than to the generally accepted decrease in digesta viscosity. [less ▲]

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See detailValorisation du froment d'hiver dans l'alimentation du poulet de chair.
Wéry, O.; Thewis, André ULg; Beckers, Yves ULg

Article for general public (2003)

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See detailEffects Of The Nature Of Nitrogen Supplementation On Voluntary Intake, Rumen Parameters And Ruminal Degradation Of Dry Matter In Sheep Fed Oat Silage-Based Diets
Mahouachi, Mokhtar; Haddad, L.; Kayouli, Chedly et al

in Small Ruminant Research (2003), 48(3), 181-187

The effects of nature of nitrogen supplementation on silageDMintake (SDMI), totalDMintake (TDMI), rumen parameters and ruminal degradation of DM of silage and wheat straw were studied using four adult ... [more ▼]

The effects of nature of nitrogen supplementation on silageDMintake (SDMI), totalDMintake (TDMI), rumen parameters and ruminal degradation of DM of silage and wheat straw were studied using four adult Noire de Thibar rams. Silage was made from predominantly oats harvested at milk stage and ensiled without preservative. The silage was offered ad libitum as the sole diet (OS) or supplemented with 450 g DM of iso-nitrogen (25.6 g/kg DM) and iso-energy (0.8 Unité Fourragère Lait: UFL/kg DM) concentrate containing soybean meal (SBM), urea (UR) or poultry litter (PL) as nitrogen supplements. SDMI (g/kgW0.75 × day) and TDMI (g/kgW0.75 × day) were affected (P < 0.001) by the type of supplement and averaged 63.9, 60.1, 54.9, 51.1 and 63.9, 81.4, 74.8, 72.2 for OS, SBM, PL and UR diets, respectively. In comparison with other diets, SBM diet systematically decreased (P < 0.05) the pH of the rumen after the morning feeding and reduced the rumen concentration of total VFA at 1 h after feeding. SBM diet decreased DM disappearance of the oat silage incubated in nylon bags for 72 h (P < 0.05), but not of wheat straw. The three supplements increased the ammonia-N concentrations in the rumen for several hours after feeding in comparison with the OS diet. However, only the SBM diet kept this difference just before the next meal. It is concluded that despite its low nutritive value (0.62 UFL and 108 g crude protein/kg DM), the oat silage is well consumed by the local ruminants accustomed to use poor forages for a long time. In Tunisia, poultry litter may be used as a nitrogen source to supplement the oat silage for sheep. [less ▲]

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See detailLa valorisation de la betterave fourragère dans l'alimentation de la vache laitière et du bétail à l'engraissement
Beckers, Yves ULg

Conference given outside the academic context (2002)

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See detailLa valoristion des oléo-protéagineux dans l'alimentation animale à la ferme
Beckers, Yves ULg

Conference given outside the academic context (2002)

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See detailUtilisation des céréales en alimentation bovine
Beckers, Yves ULg

Conference given outside the academic context (2002)

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See detailLes minéraux et vitamines chez la vache laitière
Beckers, Yves ULg

Conference given outside the academic context (2002)

Detailed reference viewed: 7 (0 ULg)