Effects of selenium enriched fertilizers on Se content in feedstuffs and on the selenium status in a beef cattle herd

in Proceedings of the British Society of Animal Science (2006)

Différents traitements de la graine de lin dans le cadre de l'engraissement de vaches de réforme.

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

Less intensified grazing management with growing fattening bulls

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 ▲]

Selenized fertilizers: effects on locally produced feedstuffs, on suckling cows and on beef meat

Conference (2006)

Production,digestion et absorption des acides gras chez le ruminant

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 ▲]

Contribution de l'élevage ovin à l'augmentation de la production de viande au Bénin

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 ▲]

Variation of plasma parameters and nitrogen metabolism in finishing Belgian blue double-muscled cull females.

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 ▲]

Comparaison of a pulp-based diet and a cereal-based diet in the fattening of young bulls from Belgian Blue, Limousin and Aberdeen Angus breeds

in Proceedings of the British Society of Animal Science (2005)

Nitrogen balance and soil nitrates in suckler cow pastures feriliser with mineral fertiliser, pig slurry or catle compost

in XX International Grassland Congress: offered papers (2005)

Selenium and blood antioxydant markers in two groups of suckling cows offered grass silage, maize silage and barely grown with fertilizer containing or not selenium

in 9th Congress of the European Society of Veterinary and Comparative Nutrition (2005)