Reference : Effect of reducing energy supply during the finishing of Belgian Blue double-muscled cul...
Scientific journals : Article
Life sciences : Animal production & animal husbandry
http://hdl.handle.net/2268/8373
Effect of reducing energy supply during the finishing of Belgian Blue double-muscled cull cows
English
Cabaraux, Jean-François mailto [Université de Liège - ULg > Département de productions animales > Ecologie et éthologie vétérinaires >]
Dotreppe, Olivier mailto [Université de Liège - ULg > Département de productions animales > Nutrition des animaux domestiques >]
Dufrasne, Isabelle mailto [Université de Liège - ULg > Département de productions animales > Nutrition des animaux domestiques >]
Clinquart, Antoine mailto [Université de Liège - ULg > Département de sciences des denrées alimentaires > Technologie des denrées alimentaires >]
Istasse, Louis mailto [Université de Liège - ULg > Département de productions animales > Nutrition des animaux domestiques >]
Hornick, Jean-Luc mailto [Université de Liège - ULg > Département de productions animales > Nutrition des animaux domestiques >]
2004
Animal Science
British Soc Animal Science
79
Part 3
469-482
Yes (verified by ORBi)
International
1357-7298
Penicuik
[en] reduced energy intake ; Belgian Blue ; cull cow ; animal performance ; meat composition and quality ; hormone and metabolite
[en] A 4-year experiment has been conducted on finishing Belgian Blue cull cows of double-muscled type in order to study the effects of diets containing adequate levels of metabolizable protein, but either normal (NENP), low (LENP) or medium (MENP) levels of metabolizable energy, on animal performance, carcass and meat characteristics, and plasma metabolites and hormones. The LENP diet was offered during the whole (LENP group) or second half of the finishing (NENP-LENP groups), and the MENP diet during the whole finishing (MENP group). The degree of fatness required for the slaughter of animals from NENP groups was close to 4.5 (scale from 0 (very lean) to 5 (very fat)). In each underfed group, the slaughter of the animals was synchronized to that of NENP cows, by degressive degree of fatness. The same duration of finishing was thus obtained for all groups. The experimental feeding strategies reduced the amounts of fat deposited in the carcass and the meat while muscle deposition was remarkably preserved. The proportions of saturated and monounsaturated fatty acids in intramuscular fat were also decreased while their proportions increased in plasma free fatty acids. Plasma insulin levels were also reduced and those of IGF-1 were, surprisingly, maintained. The low energy diet promoted thus the settlement of a discrete lipolytic state while high levels of IGF-1 preserved muscle deposition. This feeding strategy should be evaluated in other breeds of cattle.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/8373

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