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See detailComparison of composition and quality traits of meat from young finishing bulls from Belgian Blue, Limousin and Aberdeen Angus breeds
Cuvelier, Christine ULg; Clinquart, Antoine ULg; Hocquette, Jean-François et al

in Meat Science (2006), 74(3), 522-531

Thirty-six young finishing bulls from three breeds (Belgian Blue, Limousin and Aberdeen Angus) were fattened over five months with finishing diets based either on sugar-beet pulp or on cereals ... [more ▼]

Thirty-six young finishing bulls from three breeds (Belgian Blue, Limousin and Aberdeen Angus) were fattened over five months with finishing diets based either on sugar-beet pulp or on cereals. Nutritional quality traits of meat - fat content and fatty acid composition with emphasis on the n - 6 and n - 3 polyunsaturated fatty acids - along with some organoleptic quality traits were measured. The Belgian Blue bulls had the lowest intramuscular fat content associated with lower saturated and monounsaturated fatty acid contents. The polyunsaturated fatty acid content did not differ to a large extent between the breeds, the Aberdeen Angus bulls showing slightly higher values. Relative to energy intake, the overall contribution of meat to the n - 3 fatty acid recommended intake was small, whatever the breed. By contrast, the contribution of meat to daily fat intake was of greater importance, especially for the Aberdeen Angus bulls. The quality traits of meat varied also according to the breed: compared to the Aberdeen Angus, the Belgian Blue bull meat had the stablest colour, the highest drip and the lowest cooking losses. The meat of Limousin bulls had intermediate characteristics for all the parameters. (c) 2006 Elsevier Ltd. All rights reserved. [less ▲]

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See detailSelenized fertilizers: effects on locally produced feedstuffs, on suckling cows and on beef meat
Cabaraux, Jean-François ULg; Hornick, Jean-Luc ULg; Dotreppe, Olivier ULg et al

in Proceedings of the 8th International Symposium on Selenium in Biology and Medecine (2006)

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See detailDifférents traitements de la graine de lin dans le cadre de l'engraissement de vaches de réforme.
Cabaraux, Jean-François ULg; Dotreppe, Olivier ULg; Dufrasne, Isabelle ULg et al

in 13ième Rencontres autour des Recherches sur les Ruminants (2006)

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See detailSoil nitrate residues and herbage production after artificial urine applications containing different levels of nitrogen.
Dufrasne, Isabelle ULg; Lambert, R.; Hornick, Jean-Luc ULg et al

in Eight research conference of the British Grassland Society (2006)

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See detailLess intensified grazing management with growing fattening bulls
Cameroni, F. D.; Hornick, Jean-Luc ULg; Cabaraux, Jean-François ULg et al

in Animal Research (2006), 55(2, MAR-APR), 105-120

Animal performance, composition and quality of meat from Belgian Blue bulls either fattened indoors (FI) or finished indoors after a previous grazing period were studied during six years. During the ... [more ▼]

Animal performance, composition and quality of meat from Belgian Blue bulls either fattened indoors (FI) or finished indoors after a previous grazing period were studied during six years. During the grazing period, three intensification managements were tested on a permanent pasture conducted as set stocking. The intensification levels were either high (HN:140 kg N(.)ha(-1) with 6 bulls(.)ha(-1)) or moderate with a 33% reduction of nitrogen fertilisation but with the same stocking rate (MN:93 kg N(.)ha(-1), 6 bulls(.)ha(-1)) or low with no nitrogen fertiliser but with a reduced stocking rate (ON, 4 bulls(.)ha(-1)). The levels of intensification did not affect sward characteristics and chemical composition of the grass. The apparent nitrogen efficiency per ha was larger in the ON plot than in the HN and MN plots ( 26 vs. 14%). The average daily gain of bulls during the grazing season was similar in the three groups at 1.0 kg(.)d(-1). The bulls from the FI group were characterised by average daily gains significantly higher than the bulls which were previously grazed and then finished indoors (1.5 vs. 1.2 kg(.)d(-1); P < 0.01). The slaughter weight, the carcass composition, the dressing percentage and most of the meat quality parameters were similar between the treatment groups. The inclusion of a grazing period in the fattening system produced a meat which was darker (lower L*, P < 0.01), more red (higher a*, P < 0.05) and had a higher content of linolenic acid (C18:3 n-3) than that of the animals fattened indoors. [less ▲]

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See detailLes engrais enrichis en sélénium: une alternative pour améliorer le statut en sélénium du bovin
Cabaraux, Jean-François ULg; Dotreppe, Olivier ULg; Hornick, Jean-Luc ULg et al

Article for general public (2006)

Le Sélénium (Se) est un oligo-élément indispensable au bon fonctionnement de l'organisme, notamment chez le bovin. Différents éléments plaident pour l’existence de déficits en Se dans le cheptel bovin et ... [more ▼]

Le Sélénium (Se) est un oligo-élément indispensable au bon fonctionnement de l'organisme, notamment chez le bovin. Différents éléments plaident pour l’existence de déficits en Se dans le cheptel bovin et particulièrement dans les troupeaux allaitants. Solutions injectables, bolus, supplémentation des rations… différentes méthodes permettent d’assurer un statut en Se correct chez l’animal. Une autre alternative consiste à enrichir les aliments produits au niveau de l’exploitation en utilisant des engrais enrichis en Se. Le Service de Nutrition de la Faculté de Médecine Vétérinaire a testé l’effet de ce type d’engrais sur la teneur en Se dans les aliments produits et sur le statut Se d’un troupeau de vaches allaitantes [less ▲]

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See detailGestion de la faune sauvage au Sénégal : comparaison du Parc national du Niokolo Koba et de la Réserve privée de Bandia
Vincke, Xavier; Hornick, Jean-Luc ULg; Njikam Nsangou, Ibrahim ULg et al

in Annales de Médecine Vétérinaire (2005), 149(4), 232-237

This work compares two dramatically different types of wildlife management in Senegal, a country threatened by poaching and deforestation : the first concerns the management of the Niokolo Koba National ... [more ▼]

This work compares two dramatically different types of wildlife management in Senegal, a country threatened by poaching and deforestation : the first concerns the management of the Niokolo Koba National Park, by a public utility service and the second, the management of the Bandia Reserve, a fenced area which surface is more than thousand times lower, by private investors. In order to do this comparison, the structure, type of management, evolution of flora and fauna, and management problems encountered for each protected area are analysed. This comparison allows to formulate some recommendations for a sustainable management of Senegalese wildlife. [less ▲]

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See detailTransport sanguin et métabolisme hépatique des acides gras chez le ruminant
Cuvelier, Christine ULg; Cabaraux, Jean-François ULg; Dufrasne, Isabelle ULg et al

in Annales de Médecine Vétérinaire (2005), 149

Blood transport and hepatic metabolism of fatty acids in ruminants present several particularities. The plasma profile is characterized by a very small proportion of triacylglycerols-rich lipoproteins— ... [more ▼]

Blood transport and hepatic metabolism of fatty acids in ruminants present several particularities. The plasma profile is characterized by a very small proportion of triacylglycerols-rich lipoproteins— chylomicrons and very low density lipoproteins — and a very high proportion of high density lipoproteins, which can reach 80 % of the total lipoproteins. This distribution is concomitant with a low triacylglycerol and non esterified fatty acids plasma content, but with very high esterified cholesterol and phospholipid contents. Futhermore, the ruminant is characterized by the secretion of the majority of very low density lipoproteins at intestinal level and by a very low hepatic capacity to export triacylglycerols in these lipoproteins ; ruminant is therefore more sensible to steatosis. Moreover, the intrahepatic lipogenesis of ruminant is reduced, with as results a dependence on fatty acids blood import, the fatty acids being then directed to one of the two major pathways of intrahepatic metabolism, oxidation or esterification into triacylglycerols. [less ▲]

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See detailProduction,digestion et absorption des acides gras chez le ruminant
Cuvelier, Christine ULg; Cabaraux, Jean-François ULg; Dufrasne, Isabelle ULg et al

in Annales de Médecine Vétérinaire (2005), 149(1), 49-59

From a biochemical point of view, in ruminants, there are two major groups of fatty acids. They are firstly the volatile fatty acids from the rumen metabolism of dietary carbohydrates, and secondly the ... [more ▼]

From a biochemical point of view, in ruminants, there are two major groups of fatty acids. They are firstly the volatile fatty acids from the rumen metabolism of dietary carbohydrates, and secondly the fatty acids from the rumen metabolism of lipids. This second group is made of the fatty acids synthesized by the microorganisms of the rumen and the fatty acids originating from the hydrolysis of dietary triacylglycerols, which are mostly hydrogenated by microorganisms in the rumen before intestinal absorption. In such conditions, the absorbed fatty acids are always more saturated than the ingested fatty acids. [less ▲]

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See detailAcides gras et métabolisme énergétique des muscles squelettiques chez le bovin
Cuvelier, Christine ULg; Cabaraux, Jean-François ULg; Dufrasne, Isabelle ULg et al

in Annales de Médecine Vétérinaire (2005), 149(4), 188-201

Energy metabolism of skeletal muscles in cattle is characterized by several specificities, mostly related to particularities of the digestive physiology. Energy metabolism of muscles relies on ... [more ▼]

Energy metabolism of skeletal muscles in cattle is characterized by several specificities, mostly related to particularities of the digestive physiology. Energy metabolism of muscles relies on preferential utilization of some nutrients, such as volatile fatty acids and ketone bodies on the one hand, and glucose on the other hand, the contribution of non-esterified long chain fatty acids being limited. As for other species, nutrients utilization is influenced by the nature of muscle fibers, leading to preferential metabolic pathways. Energy metabolism can be either more oxidative, oxido-glycolytic, or glycolytic. Close relationships are found between energy metabolism, chemical composition of muscle - more particularly its fat level - and organoleptic quality of meat. [less ▲]

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See detailContribution de l'élevage ovin à l'augmentation de la production de viande au Bénin
Gbangboche, A. B.; Hornick, Jean-Luc ULg; Abiola, F. A. et al

in Revue Africaine de Santé et de Productions Animales [=RASPA] (2005)

Cet article a relaté la situation de l’élevage des ruminants à travers la production, la consommation et la commercialisation de viande en Afrique subsaharienne au cours de ces trois dernières décennies ... [more ▼]

Cet article a relaté la situation de l’élevage des ruminants à travers la production, la consommation et la commercialisation de viande en Afrique subsaharienne au cours de ces trois dernières décennies. Il faut signaler que l’élevage des ovins représente particulièrement l’un des secteurs d’activité importants dans les milieux ruraux, puisqu’il nécessite peu d’investissements et les conditions de commercialisation des ovins sont très souples par rapport aux bovins pour couvrir les besoins financiers ponctuels de l’éleveur. Au Bénin, malgré la rusticité et la trypanotolérance des ovins Djallonké, un certain nombre de contraintes font que leur niveau de production est resté faible par rapport à la moyenne de l’Afrique subsaharienne. Pour optimiser la production ovine dans ce pays, l’une des priorités à la mise en place des schémas d’amélioration génétique, serait entre autre, l’estimation des facteurs influençant la croissance et la reproduction des ovins Djallonké, deux caractères intimement liés à la production de viande. [less ▲]

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See detailCaractérisation et maîtrise des paramètres de la reproduction et de la croissance des ovins Djallonké (Ovis amon aries)
Gbangboche, A. B.; Hornick, Jean-Luc ULg; Adamou-N'Diaye, M. et al

in Annales de Médecine Vétérinaire (2005), 149(3), 148-160

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See detailVariation of plasma parameters and nitrogen metabolism in finishing Belgian blue double-muscled cull females.
Cabaraux, Jean-François ULg; Dufrasne, Isabelle ULg; Istasse, Louis ULg et al

in Journal of Animal Physiology & Animal Nutrition (2005), 89(1-2), 55-62

The changes over time in plasma parameters and nitrogen metabolism were studied in finishing Belgian Blue double-muscled females offered a maize silage based diet. When compared with literature data ... [more ▼]

The changes over time in plasma parameters and nitrogen metabolism were studied in finishing Belgian Blue double-muscled females offered a maize silage based diet. When compared with literature data, plasma glucose along with triglycerides concentrations was low while non-esterifled fatty acids were high and rich in polyunsaturated forms. The concentrations in thyroid hormones, insulin-like growth factor 1 and insulin were also low and plasma insulin decreased with time. Growth hormone concentration, by contrast, increased with time. On average, the females retained 44 g nitrogen per day from an intake of 210 g but the efficiency of retention decreased with time. The fractional rates of accretion and synthesis of muscle protein were also affected by time. The dry matter content in muscle biopsies was close to 22% and increased with the finishing, as did the diameter of the tailhead adipocytes. [less ▲]

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See detailSelenium status around peripartum in beef cows and claves offered grass silage and barley produced with selenium enriched fertilizers
Cabaraux, Jean-François ULg; Hornick, Jean-Luc ULg; Schoonheere, Nicolas ULg et al

in Book of absracts of the 56th Annual Meeting of the European Association for Animal Production (2005)

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