Article (Scientific journals)
Different modes of food restriction and compensatory growth in double-muscled Belgian Blue bulls: plasma metabolites and hormones
Cabaraux, Jean-François; Kerrour, M.; Van Eenaeme, Christian et al.
2003In Animal Science, 77, p. 205-214
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Keywords :
Belgian blue; bulls; compensatory growth; hormones; metabolites
Abstract :
[en] The effects of different sequences of food restriction and fattening have been studied on plasma metabolites and hormones in double-muscled Belgian Blue bulls. Twenty animals were divided into five groups. The first group (control, CG) was given, ad libitum, a fattening diet based on sugar-beet pulp. In G2 and G3, fattening was interrupted after 103 and 187 days, respectively, by a period of food restriction lasting about 2 months during which the animals received a maintenance ration. They were finished with the same diet as CG. The last two groups, G4 and G5, received a limited amount of the restriction diet to support 0.5 and 0 kg gain per day, respectively, for 4 months, before being fattened as CG. Plasma glucose, alpha-amino nitrogen, non-esterified fatty acids, urea, creatinine, thyroxine (T4), 3, 3', 5'-tri-iodothyroxine (T3), and insulin-like growth factor-1 (IGF-1) were measured in blood samples taken every 2 weeks. Plasma GH and insulin profiles were measured in serial blood samples obtained at three different times during growth. Animals that showed compensatory growth had lower plasma urea, associated with high levels of T3, T4 and IGF-1. Animals from G2 and G3 failed to show compensatory growth. In Belgian Blue bulls, compensatory growth is markedly affected when food restriction is severe or fattening interrupted.
Disciplines :
Animal production & animal husbandry
Author, co-author :
Cabaraux, Jean-François  ;  Université de Liège - ULiège > Département de productions animales > Ecologie et éthologie vétérinaires
Kerrour, M.;  Université de Liège - ULiège > Département de productions animales > Nutrition des animaux domestiques
Van Eenaeme, Christian 
Dufrasne, Isabelle  ;  Université de Liège - ULiège > Département de productions animales > Nutrition des animaux domestiques
Istasse, Louis ;  Université de Liège - ULiège > Département de productions animales > Nutrition des animaux domestiques
Hornick, Jean-Luc  
Language :
English
Title :
Different modes of food restriction and compensatory growth in double-muscled Belgian Blue bulls: plasma metabolites and hormones
Publication date :
2003
Journal title :
Animal Science
ISSN :
1357-7298
Publisher :
Cambridge University Press, Wallingford, United Kingdom
Volume :
77
Pages :
205-214
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 06 March 2009

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