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

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About the Journal Editorial Office Editorial Board Copy right and self-archiving policy Peer review process Instructions for Reviewers Printed version subscription Abstracting and indexing Contact

Instructions for Authors

Policies General information Open Access, Licensing terms, Commercial use and Copyright terms policies Self-archiving policy and Archive policies Article Correction and Withdrawal policy Manuscript Submission policy Authorship policy Conflict of Interest policy Language considerations policy Plagiarism and Duplicate publications policy Ethics policy Review process policy Acceptance of manuscripts policy Online First Articles and Special Issues policies Generative artificial intelligence (AI) policy Advertising policy

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Suppl. 1/2004 vol. 13

SHORT COMMUNICATION

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

,

M. R. Weisbjerg ³

,

G. H. Laswai ¹

,

T. Hvelplund ³

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

Publication date: 2004-08-30

Corresponding author

A. E. Kimambo

Sokoine University of Agriculture, Department of Animal Science and Production, P.O. Box 3004, Morogoro, Tanzania

J. Anim. Feed Sci. 2004;13(Suppl. 1):643-646

DOI: https://doi.org/10.22358/jafs/74080/2004

KEYWORDS

digesta kinetics

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 1^st and 3^rd trimester. In conclusion, pregnant heifers fed high NDF based diets, maintains high forage intake by increasing digestion and passage rates.

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