Article (Scientific journals)
Rumen Escape Of Methionine And Lysine Administered Intraruminally To Growing Double-Muscled Belgian Blue Bulls
Froidmont, Eric; Rondia, Pierre; Thewis, André et al.
2002In Reproduction Nutrition Development, 42 (6), p. 537-544
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Keywords :
Ruminant; Methionine; Lysine; Rumen escape; Plasma
Abstract :
[en] In many dietary conditions, methionine (Met) and lysine (Lys) are the most limiting amino acids (AA) for ruminants. The AA protected from ruminal fermentation are not commercially available, with the exception of Met which is not always economical, especially for meat production. This study measured ruminal escape of free Met and Lys supplemented intraruminally to fast growing bulls. Six double-muscled Belgian Blue bulls, fed a high concentrate diet and fitted with a rumen cannula, received free Met (40 g.d–1) and free Lys (60 g.d–1), individually or simultaneously, in a duplicated Latin square design. The mean ruminal escape of Met and Lys reached 37 and 45% respectively, and did not differ if administered separately or together. Plasma Lys and Met concentrations were increased by 504 and 126%, respectively. Substantial proportions of free AA escaped ruminal fermentation and were available for absorption from the small intestine when they were administered at physiologically high levels.
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology
Animal production & animal husbandry
Author, co-author :
Froidmont, Eric;  Centre de Recherche Agronomiques (CRA W), Gembloux > Département des Productions et Nutrition Animales
Rondia, Pierre;  Centre de Recherches Agronomiques (CRA W), Gembloux > Département des Productions et Nutrition Animales
Thewis, André ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech
Beckers, Yves  ;  Université de Liège - ULiège > Gembloux Agro-Bio Tech
Language :
English
Title :
Rumen Escape Of Methionine And Lysine Administered Intraruminally To Growing Double-Muscled Belgian Blue Bulls
Publication date :
2002
Journal title :
Reproduction Nutrition Development
ISSN :
0926-5287
eISSN :
1297-9708
Publisher :
EDP Sciences, Les Ulis, France
Volume :
42
Issue :
6
Pages :
537-544
537-544
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 August 2009

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