1.054
IF5
1.150
IF
Q3
JCR
1.7
CiteScore
0.396
SJR
Q2
SJR
40
MNiSW
148.75
ICV
SHORT COMMUNICATION
 
CC-BY 4.0
 
 

In sacco kinetics disappearance of NDF of small and large particles of the rumen contents in grazing dairy cows

A. Boudon 1  ,  
 
1
INRA, Agrocampus Rennes, UMR 1080, Milk Production, F-35590 St-Gilles, France
J. Anim. Feed Sci. 2007;16(Suppl. 2):243–248
Publication date: 2007-09-17
KEYWORDS
ABSTRACT
In sacco degradation curves of NDF from small (SP) and large particles (LP) of rumen contents, collected in dairy cows before or after grazing, were compared. LP and SP were defined as ruminal particles retained, or passing a 1 mm-pore-sieve, respectively. Degradation curves were fitted with a first order kinetics model. SP, compared to LP, contained a lower proportion of digestible NDF. Fractional degradation rates of NDF were lower for SP than for LP after the meal, and were not different between SP and LP before the meal. These results questions about representations of SP and LP in the rumen models.
CORRESPONDING AUTHOR
A. Boudon   
INRA, Agrocampus Rennes, UMR 1080, Milk Production, F-35590 St-Gilles, France
ISSN:1230-1388