0.857
IF5
0.900
IF
Q3
JCR
0.92
CiteScore
0.405
SJR
Q2
SJR
20
MNiSW
165.24
ICV
SHORT COMMUNICATION
 
CC-BY 4.0
 
 

Effect of grazing versus indoors feeding on the damage done to the grass during ingestive mastication

A. Boudon 1  ,  
A. Acosta 2,  
R. Delagarde 1,  
 
1
Unité Mixte de Recherches INRA/Agrocampus Production du Lait, Institut National de la Recherche Agronomique, 35590 St-Gilles, France
2
Universidad de Buenos Aires, Facultad de Agronomía, Av. San Martin, 4453 Ciudad de Buenos Aires, Argentina
J. Anim. Feed Sci. 2004;13(Suppl. 1):35–38
Publish date: 2004-08-30
KEYWORDS:
ABSTRACT:
This experiment compared the effect of grazing versus indoors feeding of ryegrass, on the chewing behaviour and the physical damage done to the grass during ingestive mastication in dairy cows. Ingestive boli were collected on four cows fed at grazing or indoors in a triple reversal design. The cows ingested smaller boli (93.4 vs 142.2 g; P<0.01) at a slower rate at grazing compared to indoors feeding. The proportions of cell contents released during mastication and the proportions of particles in the boli shorter than 2 mm were noticeably higher at grazing compared to indoors feeding. The consequence could be a higher rate of ruminal digestion of grass at grazing compared to indoors feeding.
CORRESPONDING AUTHOR:
A. Boudon   
Unité Mixte de Recherches INRA/Agrocampus Production du Lait, Institut National de la Recherche Agronomique, 35590 St-Gilles, France
ISSN:1230-1388