Showing results 41 to 60 of 265
  Optimiser l'usage des fourrages auto-produits et viser l'autonomie protéiqueBeckers, Yves  Conference given outside the academic context (2011) Detailed reference viewed: 14 (3 ULg)La production de viande par les bovinsBeckers, Yves Conference given outside the academic context (2011) Detailed reference viewed: 8 (2 ULg)La production de viande par les bovinsBeckers, Yves Conference given outside the academic context (2011) Detailed reference viewed: 5 (1 ULg)Usefulness of a Vancomycin pretreatment when challenging chickens in order to evaluate anti-Salmonella preparationsMarcq, Christopher ; Cambier, Carole ; Thewis, André et alin Ceylan, Necmettin; Ciftci, Ibrahim; Adabi, Shahram (Eds.) 18th European Symposium on Poultry Nutrition: Proceedings (2011, October) For many years, Salmonella infection models have been developed in chickens with the aim to study the effects of prophylactic or therapeutic measures on the colonization of the gut. However, although the ... [more ▼] For many years, Salmonella infection models have been developed in chickens with the aim to study the effects of prophylactic or therapeutic measures on the colonization of the gut. However, although the literature includes numerous challenge models, few studies investigated the infection rates among the inoculated population. We have implemented an antibiotic pretreatment of the chickens (vancomycin hydrochloride, 25 mg/bird) as an infection promoter. Indeed, vancomycin affects the normal gut microflora and releases sites for Salmonella at the intestinal epithelium. Two experiments were undertaken and a presence/absence cloacal swab method was used to evaluate cecal colonization. In the first experiment, birds were orally inoculated with Salmonella Typhimurium at 21 days of age. Three inoculum doses (3 × 103, 3 × 106, 3 × 109 cfu/bird) and an uninfected control were compared according to whether or not vancomycin had been used. Higher levels of Salmonella colonization (more than 70 %) were achieved in the gut by pretreating birds with vancomycin before inoculation (P < 0.05). In the second experiment, chicks were inoculated at 7 days of age with 108 cfu/bird after a vancomycin pretreatment, leading to an infection rate of 87.5 %. In conclusion, vancomycin promotes efficiently the percentage of colonized birds in the challenged population, with either young animals or olders. [less ▲] Detailed reference viewed: 41 (14 ULg)La Belfeed : un moyen de contrôler la microflore du tube digestif de la volaille et du porc; Beckers, Yves ; Conference given outside the academic context (2011) Detailed reference viewed: 14 (5 ULg)Production de viande - réchauffement climatiqueBeckers, Yves ; Jerome, Elisabeth ; Moureaux, Christine et alArticle for general public (2011) Detailed reference viewed: 73 (19 ULg)La féverole en alimentation animaleBeckers, Yves Scientific conference (2011, May 05) Detailed reference viewed: 15 (4 ULg)Rations d'engraissement, rappel de quelques fondamentauxBeckers, Yves Article for general public (2011) Detailed reference viewed: 57 (14 ULg)Ex vivo ruminal cellulosome for by-product biomass conversionHissette, Mathias ; Destain, Jacqueline ; Thewis, André et alConference (2011, April 27) Detailed reference viewed: 51 (16 ULg)Chemical composition of silage residues sustaining the larval development of the C. obsoletus/scoticus complex species (Diptera: Ceratopogonidae)Zimmer, Jean-Yves ; Saegerman, Claude ; Losson, Bertrand et alPoster (2011, April 13) Detailed reference viewed: 37 (14 ULg)Carbon exchange in a Belgian grassland with cattleJerome, Elisabeth ; Beckers, Yves ; Bodson, Bernard et alPoster (2011, April 08) Detailed reference viewed: 52 (16 ULg) Tarissement court vs long ? Lactation longue vs courte ?Beckers, Yves Conference given outside the academic context (2011) Detailed reference viewed: 12 (2 ULg) D31-1191: Développement et utilisation des anticorps du jaune d'oeuf en vue du contrôle des Salmonella spp. dans le tube digestif du poulet de chair (Rapport final)Marcq, Christopher ; Beckers, Yves ; Portetelle, Daniel et alReport (2011) Detailed reference viewed: 32 (14 ULg)Rapport de recherche (mission du du 1er janvier 2010 au 28 février 2011): Valorisation par la volaille des hydrates de carbone de structure issus des industries agro-alimentaires: effets des enzymes fibrolytiques ruminalesHissette, Mathias ; Thewis, André ; Beckers, Yves et alReport (2011) Detailed reference viewed: 8 (1 ULg)Les produits du maïs fourrage : comment les réfléchir dans les rations des bovins ?Beckers, Yves Conference given outside the academic context (2011) Présentation des principales caractéristiques des produits du maïs fourrage et des éléments positifs et négatifs de leur introduction dans les rations des bovins. Detailed reference viewed: 25 (6 ULg)Alimentation et définitions des rations dans les exploitations laitièresBeckers, Yves Scientific conference (2011, February 02) Présentation des principaux principes du rationnement des vaches laitières Detailed reference viewed: 41 (15 ULg)Les aspects nutritionnels de la betterave fourragère et son intégration dans les rationsBeckers, Yves Conference given outside the academic context (2011) Présentation des principales caractéristiques de la betterave fourragère et des éléments positifs et négatifs de son intégration dans les rations des bovins. Detailed reference viewed: 30 (3 ULg)Partial replacement of fish meal with Azola meal in diets for Nile tilapia (Oreochromis niloticus L.) affects growth and whole body fatty acid composition; ; et al in International Journal of Biological and Chemical Sciences (2011), 5(6), 2224-2235 The replacement of fishmeal (FM) with Azolla meal (AM) in diets on growth and fatty acid in Nile tilapia, Oreochromis niloticus (initial mean weight: 16.4 g) was studied. Fish were fed with six ... [more ▼] The replacement of fishmeal (FM) with Azolla meal (AM) in diets on growth and fatty acid in Nile tilapia, Oreochromis niloticus (initial mean weight: 16.4 g) was studied. Fish were fed with six isonitrogenous (29.2% CP) and isoenergetic (16.9 kJ.g-1) diets containing 0%, 10%, 20%, 30%, 40% and 50% AM respectively, as partial FM substitute. Diet A0 acted as a control. The final weight (51.0-88.3 g), the weight gain (210.8-438.3%) and the SGR (1.3-1.9%day-1) decreased when AM level higher than 10% in diets (P < 0.05). The FCR (1.44 to 2.35) significantly increased when AM level exceeded 20% (P < 0.05). The protein efficiency ratio and the apparent net protein utilization decreased consequently. The fatty acids in the whole fish were significantly influenced by the diets. The replacement of FM by AM produced fish with lower (n-3) highly unsaturated fatty acids mainly docosahexaenoic acid, and higher arachidonic acid (P < 0.05). The n-3/n- 6 fatty acid ratio ranged from 0.08 to 0.17, and was lower in fish fed A40 and A50 (P < 0.05). The findings suggest that high AM in diets affects Nile tilapia growth and the fern could be incorporated in diets up to 30% without any adverse effect on fish fatty acid composition. However, alternative additional source of lipid must be used to improve the quality of fish fed AM-diets. [less ▲] Detailed reference viewed: 20 (4 ULg)Influência da modalidade de apresentação do trigoPiron, Fabien ; ; Thewis, André et alArticle for general public (2011) Detailed reference viewed: 9 (3 ULg) |
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