Article

Nutritive value of unconventional fibrous ingredients fed to Guinea pigs in the Democratic Republic of Congo

Fonds de la Recherche Scientifique-FNRS, 5 Rue d’Egmont, 1000 Brussels, Belgium
Tropical Animal Health and Production (impact factor: 1.12). 04/2012; 41(8):1731-1740. DOI:10.1007/s11250-009-9372-1 pp.1731-1740

ABSTRACT The energy and protein value for Guinea pigs (GP) of 9 forages (7 dicots and 2 grasses) and 5 hay-based diets was determined.
The apparent faecal digestibility of dry matter, organic matter, crude protein and energy was measured on GP housed in metabolic
cages. The forages and the diets were digested in vitro using pepsin and pancreatin hydrolysis and gas fermentation test to simulate stomach, small intestine and large intestine,
respectively. Most of the dicots had high digestible crude protein content (152–201g/kg DM) and the 2 grasses showed lower
values (80–85g/kg DM). Digestible energy content of the forages ranged between 5.79 to 13.08MJ/kg DM. None of the forage
species or hay-based diets provided sufficient energy to supply the 11.7MJ/kg metabolic energy requirements. The influence
of intestinal fermentation on energy and protein values was highlighted by correlations (P<0.05) between in vivo and in vitro data, including gas fermentation. It is the first time that such relationships are reported in single-stomach animals.

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Keywords

11.7MJ/kg metabolic energy requirements
 
2 grasses
 
5 hay-based diets
 
7 dicots
 
apparent faecal digestibility
 
Digestible energy content
 
gas fermentation
 
gas fermentation test
 
GP housed
 
hay-based diets
 
intestinal fermentation
 
large intestine
 
pancreatin hydrolysis
 
protein value
 
protein values
 
simulate stomach
 
single-stomach animals
 
small intestine
 
sufficient energy
 
vitro data
 

J Bindelle