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 pregnancy on intake, digestibility and digesta kinetics in heifers fed urea treated rice straws

E. K. Masha 1,  
A. E. Kimambo 1  ,  
N. Kanuya 2,  
D. M. Mgheni 1,  
L. A. Mtenga 1,  
G. H. Laswai 1,  
 
1
Sokoine University of Agriculture, Department of Animal Science and Production, P.O. Box 3004, Morogoro, Tanzania
2
Sokoine University of Agriculture, Department of Veterinary Surgery and Therionology, P.O. Box 3020, Morogoro, Tanzania
3
Danish Institute of Agricultural Sciences, Department of Animal Nutrition and Physiology, Foulum, P.O. Box 50, DK-8830 Tjele, Denmark
J. Anim. Feed Sci. 2004;13(Suppl. 1):643–646
Publish date: 2004-08-30
KEYWORDS
ABSTRACT
Five rumen fistulated heifers weighing 298±4 kg, fed ad libitum urea treated rice straw were used during trimesters 1, 2, and 3 of pregnancy. Voluntary dry matter intake (VDMI), dry matter (DM) and neutral detergent fibre (NDF) digestibility, rumen pool sizes and passage rates were measured. Indigestible NDF was measured by long incubation in situ and used to derive digesta kinetics. The VDMI, digestion and passage rates for DM and NDF fractions, increased (P<0.05) between the 1st and 3rd trimester. In conclusion, pregnant heifers fed high NDF based diets, maintains high forage intake by increasing digestion and passage rates.
CORRESPONDING AUTHOR
A. E. Kimambo   
Sokoine University of Agriculture, Department of Animal Science and Production, P.O. Box 3004, Morogoro, Tanzania
ISSN:1230-1388