Tinoziva et al
Greener Journal of Agricultural Sciences Vol. 3 (9), pp. 663-668, September 2013.
ISSN: 2276-7770 © 2011 Greener Journals
Manuscript Number: 061713678
Influence of Communal Area Grazing Management System on the Nutritive Value of Forages Selected by Cattle in a Semi-Arid Area of Zimbabwe
Hungwe Tinoziva1*, Mugabe Prisca2, Mutisi Charles2 and Gandiwa Edson3
1Department of Livestock, Wildlife and Fisheries, Faculty of Agricultural Sciences,
Great Zimbabwe University,
P. O. Box 1235, Masvingo, Zimbabwe.
2Department of Animal Science, Faculty of Agriculture, University of Zimbabwe.
3Department of Wildlife and Safari Management, Chinhoyi University of Technology,
Private Bag 7724, Chinhoyi, Zimbabwe.
*Corresponding Author’s Email: hungwetinoziva @ gmail.com
A study was conducted to determine the effect of grazing
management system on the nutritive value of forages selected
by cattle. Animals were observed while grazing and the
grazed samples were collected. The samples were analysed for
chemical composition and digestibility. There were
significant (P<0.05) interactions between grazing system and
month of sampling on acid detergent fibre (ADF) and crude
protein (CP) contents of the forages. Month of sampling had
a significant (P<0.05) effect on all the parameters analysed.
Samples collected under the traditional grazing system had
significantly (p<0.05) higher levels of in vitro dry matter
digestibility (IVDMD) and less ADF and NDF content compared
to those forages from the grazing scheme. The CP content of
the forages selected was not affected by grazing system
(P>0.05). These findings suggest that grazing schemes tended
to compromise the quality of forages selected under poor
range conditions, possibly due to limited range resources.
The ability of cattle under traditional grazing system to
switch effectively among the different range resources might
have enhanced the quality of forages selected.
Keywords: Forage nutritive value, communal grazing management, grazing scheme, traditional grazing system.