Acides gras : nomenclature et sources alimentaires

in Annales de Médecine Vétérinaire (2004), 148(3), 133-140

Fatty acids are member of the lipid family. They are aliphatic monocarboxylic acids with or without double bond. They are classified according different nomenclatures : the international systematic name ... [more ▼]

Fatty acids are member of the lipid family. They are aliphatic monocarboxylic acids with or without double bond. They are classified according different nomenclatures : the international systematic name, the omega nomenclature and the trivial names. Fatty acids are major compounds of oils and fats. Among the saturated fatty acids, C12, C16 and C18 fatty acids are the most widely distributed, whereas in the unsaturated fatty acids group, C18 with 1, 2 or 3 double bonds are the most important within the vegetable and animal terrestrian products. Fatty acids with 4 or more than 4 double bonds and 20 to 24 atoms of carbon are largely represented in the marine products. [less ▲]

Vaches de réforme. Ce qu’il faut savoir pour mieux maîtriser sa technique d’engraissement

Article for general public (2004)

Impact de différents modes de présentation du sélénium dans la ration de bovins

in 11èmes Rencontres autour des Recherches sur les Ruminants (2004)

Animal performance and nitrogen surplus in suckler cows pastures fertilised with mineral nitrogen fertilizer, pig slurry or cattle compost

in Land use systems in grassland dominated regions, 20th General Meeting of the European Grassland Federation (2004)

Effect of fertilisation with selenium on plasma selenium in Belgian Blue suckling cows and heifers: first results

in Land use systems in grassland dominated regions, 20th General Meeting of the European Grassland Federation (2004)

Effet de la fertilisation avec des engrais contenant du sélénium sur le statut sélénique de bovins Blanc-Bleu Belge : résultats préliminaires

in 11èmes Rencontres autour des Recherches sur les Ruminants (2004)

Effect of fertilisation with selenium on plasma selenium in Belgian Blue suckling cows and heifers: first results

in Land use systems in grassland dominated regions, Book of abstracts of 20th General Meeting of the European Grassland Federation (2004)

Selenium enriched winter barley for fattening bulls : animal performance and plasma metabolites

in Proceedings of the British Society of Animal Science (2004)

Effects of age on plasma metabolites and hormones in finishing Belgian Blue double-muscled cull females

in Animal Science (2004), 78(Part 2), 229-235

Two groups of 12 Belgian Blue double-muscled cull females were used successively in a 2-year repeated experiment and divided into three groups according to age, allowing four animals per group each year ... [more ▼]

Two groups of 12 Belgian Blue double-muscled cull females were used successively in a 2-year repeated experiment and divided into three groups according to age, allowing four animals per group each year. The aim of the trial was to relate, during the finishing period, the metabolic and endocrine parameters with age. Females were fattened with a diet based on maize silage and were blood sampled on several occasions. The average daily gain (ADG) decreased with the age of the cows. Plasma glucose and triglycerides decreased also with age while the youngest females showed lower concentrations of urea than those older. The composition of plasma non-esterified fatty acids also differed considerably between groups. The hormones that best related with ADG were IGF-1 and insulin. Plasma concentrations of thyroid hormones were lower in the oldest animals. No difference between groups was found for GH. Heifers presented lower concentrations of GH and IGF-1 than those reported elsewhere in fattening bulls of the same breed. It may be concluded that in Belgian Blue double-muscled females, glucose, IGF-1 and insulin are good indicators of the growth potential. Young adult cows presented intermediate characteristics of metabolic and endocrine status that were close either to younger or to older cows. [less ▲]

Fattening of Belgian Blue double-muscled culled females: animal performance, carcass characteristics and meat quality

in Annales de Médecine Vétérinaire (2003), 147(6, DEC-JAN), 423-431

In order to measure Animal performance and, carcass and meat characteristics of Belgian Blue double-muscled culled females, a fattening trial was carried out on a total of 78 animals. Fifteen females were ... [more ▼]

In order to measure Animal performance and, carcass and meat characteristics of Belgian Blue double-muscled culled females, a fattening trial was carried out on a total of 78 animals. Fifteen females were slaughtered at the beginning of the trial and 63 were fattened on a maize silage based diet. The initial average live weight was 571.2kg. The total fattening gain was 91.1 kg for a period of 91.4 days. At slaughter, the warm carcass weight was 405.9kg and the killing-out proportion 63.3%. The carcasses were characterised by a high proportion of muscles (67.6%) and rather low proportions of adipose tissue (18.2%) and bones (14.2%). The muscle and adipose tissue accretions were 36.0 and 28.2 kg. Meat was lean as indicated by high protein content (88.5%) and low fat content (6.6%) in dry matter. A high proportion of polyunsaturated fatty acids was also found (6.8 mol %). [less ▲]