• O. A. OKUKENU 1Department of Pasture and Range Management, Federal University of Agriculture, Abeokuta, Nigeria
  • B. T. AKINYEMI 1Department of Pasture and Range Management, Federal University of Agriculture, Abeokuta, Nigeria
  • P. A. DELE Department of Pasture and Range Management, Federal University of Agriculture, Abeokuta, Nigeria
  • A. A. OLAJIDE Department of Pasture and Range Management, Federal University of Agriculture, Abeokuta, Nigeria
  • A. O. JOLAOSHO Department of Pasture and Range Management, Federal University of Agriculture, Abeokuta, Nigeria
  • O. S. ONIFADE Department of Pasture and Range Management, Federal University of Agriculture, Abeokuta, Nigeria
  • E. FABUSORO Department of Agricultural Extension and Rural Development, Federal University of Agriculture, Abeokuta, Nigeria.



Grasses, Location, Macro and Trace minerals, Season, Natural pasture


The research was carried was carried out to evaluate the chemical composition of the dominant grasses harvested from the natural pasture in selected villages in Ogun State, South-western Nigeria at different seasons. The study was carried out using a 4 × 6 factorial arrangement comprising four seasons (early rain, late rain, early dry and late dry) at six locations (Afami, Atokun, Ibooro, Ileniku, Ipaaya, and Okerori). Results showed that the crude protein (CP) content significantly (p<0.05) varied from 5.56 % for Okerori to 7.34 % for Ibooro and the grasses harvested at Afami had the highest (72.75 %) neutral detergent fibre (NDF) values with the least (68.75 %) value recorded for Okerori, while the acid detergent fibre (ADF) values ranged from 41.00 % for Atokun to 48.25 % for Okerori. Also, CP value as affected by the season ranged from 4.23 % for late rainy to 9.44 % for the early rainy season and NDF values from 67.33% for late dry to 72.33 % for late rainy season while the early dry season had the highest value (48.00 %) for ADF with the least value (40.33 %) was recorded for the early rainy season. The phosphorus (P) value was highest at Ipaaya (2.99 g/kg) with the least value observed at Okerori (1.62 g/kg). The value for calcium ranged from 2.55 g/kg at Afami to 6.59 g/kg at Okerori. The P value of grasses as affected by seasons ranged from 1.46 g/kg for early dry to 2.66 g/kg for early rainy seasons.




A.O.A.C. 2000. Official methods of analysis 15th edition. Association of Official Analytical Chemists, Washington D.C.

AFRC. 1991. Technical Committee on Responses to Nutrients. A reappraisal of the calcium and phosphorus requirements of sheep and cattle. Nutritional Abstracts and Reviews (Series B), 61, 573–612.

Akinsoyinu, A.O., Onwuka, C.F.I. 1988. Mineral constituents of some browse plants used in ruminant feeding in Southern Nigeria. Nigerian Journal of Animal Production 15:57-62.

Annison, E.F., Bryden, W.L. 1998. Perspectives on ruminant nutrition and metabolism. I.metabolism in the rumen. Nutritional Research Review, 11: 173-198.

Ashagre, A. 2008. Effect of nitrogen fertilizer and harvesting stage on yield and quality of natural pasture in Fogera District, North Western Ethiopia. MSc. (Agric.). School of Graduate Studies, Haramaya University. 94p

Committee on Mineral Nutrition. 1973. Tracing and treating mineral disorders in dairy cattle. Centre for Agricultural Publishing and Documentation, Wageningen, The Netherlands.

Ejaz, A.W., Rashid, A., Saifullah, A., Ehsanullah, M.Y. 2011. Role of mineral nutrition in alleviation of drought stress in plants. School of Earth and Environment, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 Australia.

Elkins, N.Z., Sabol, G.V., Ward, T.J., Whitford, W.G. 1986. The influence of subterranean termites on the hydrological characteristics of a Chihuahuan desert ecosystem. Oecologia 68: 5 2 1 -528.

Faria, J.A., Velásquez, J., López, M.G. 1981. Situacion de la nutricion mineral en fincas de las sabanas orientales del estado Guarico. Boletin No. 6, Fondo de Investigación Agropecuaria, Guarico, Venezuela.

Fritz, J.S., Schenk, G.H. 1979. Quantitative analytical chemistry, 4th ed. (Allyn and Bacon, Inc: Boston, Massachusetts)

Ganskopp D., Bohnert D. 2001. Nutritional dynamics of 7 northern Great basin grasses. Journal of Range Management 54: 640-647.

Gebrehiwot Lulseged, R.L., McGraw, G.A. 1996. Forage yield and quality profile of three annual legumes in tropical highlands of Ethiopia. Tropical Agriculture (Trinidad), 73 (1): 83-89.

Gomide, J.A., Noller, C.H., Mott, G.O., Conrad, J.H., Hill, D.L. 1969. Mineral composition of six tropical grasses as influenced by plant age and nitrogen fertilization. Agronomy Journal 61:120-123

Hussain F., Durrani, M.J. 2009. Nutritional evaluation of some forage plants from Harboi Rangeland , Kalat, Pakistan. Pakistan Journal of Botany. 41:1137-1154.

Judson, G.J., McFarlane, J.D. 1998. Mineral disorders in grazing livestock and the usefulnessof soil and plant analysis in the assessment of these disorders. Australian Journal of Experimental Agriculture. 38: 707-723.

Kakengi, A.M.V., Shem, M.N., Mtengeti, E.P., Otsyina, R. 2001 Leucaena leucocephala leaf meal as a supplement to diet ofcattle grazing dairy cattle in semi-arid western Tanzania. Agroforestry Systems 52: 73-82.

Mahala, A.G., Nsahlai, I.V., Basha, N.A.D., Mohammed, L.A. 2009. Nutritive evaluation of natural pasture at early and late rainfall season in Kordofan and Butana, Sudan, Australian Journal of Basic Apply Science 3: 4327- 4332.

McDowell, L.R. 1985. In: Nutrition of Grazing Ruminants in Warm Climates. Academic Press New York, pp-443.

McDowell, L.R. 1992. Minerals in Animal and Human Nutrition. Academic Press, San Diego, California.

McDowell, L.R. 1997. Minerals for Grazing Ruminants in Tropical Regions, 3rd edition. University of Florida, Gainesville, Florida, USA, 81 pp.

McDowell, L.R., Valle, G. 2000. Major Minerals in Forages CAB International 2000. Forage Evaluation in Ruminant Nutrition (eds D.I. Givens, E. Owen, R.F.E. Axford and H.M. Omed) 373-397.

McDowell, L.R., Conrad, J.H., Ellis, G.I. 1984. Mineral deficiencies and imbalances and their diagnosis. Proc. Symp. On Herbivore Nutrition in sub-tropics and tropics. Pretoria, 67-88.

McDowell, L.R., Conrad, J.H., Hembry, F.G. 1993. Minerals for Grazing Ruminants in Tropical Regions. University of Florida, Gainesville.

Mengel, K., Kirkby, E.A. 2001. Principles of Plant Nutrition. 5th ed., Kluwer Academic Publishers, Dordrecht.

Minson, D.J. 1990. Forage in ruminant nutrition. Academic Press, San Diego, CA.

Mittal, G. K., Sharma, K. M., Maheshwari, M.L., Barsaul, C.S. 2012. Chemical composition of some naturally available fodder resources in Hill area of Chakrata (Utter Pradesh). Indian Journal of Animal Nutrition. 5: 341-344.

Muia, J.M.K. 2000. Use of Napier grass to improve smallholder milk production in Kenya PhD Thesis. Wageningen Agricultural University. The Netherlands.

Ndemanisho, E.E., Mtenga, L.A., Kimambo, A.E., Mtengeti, E.J. 1998. Animal Feed Science and Technology 73(3): pp.365-374.

Shaul, O. 2002. Magnesium transport and function in plants: the tip of the iceberg Bio-metals 15, 309–323.

Statistical Analysis System Institute Inc., 1999. SAS - 24. STAT Programme, Carry, NC: SAS Institute Inc.

Subhalakshmi, B., Bhuyan, R., Sama, D.N., Sharma, K.K., Bora, A. 2011. Effect of variety and stage of harvest on yield, chemical composition and in vitro digestibility of hybrid Napier (Pennisetum purpureum x P. americanum). Indian Journal of Animal Nutrition, 28: 418-420.

Teka, H. I., Casper, M., Ayana, A., Abubeker, H. 2012. Effect of Seasonal Variation on the Nutritional Quality of Key Herbaceous Species in Semi-arid Areas of Borana, Ethiopia. Department of Plant Production and Soil Science, University of Pretoria, South Africa. Indian Journal of Animal Nutrition, 2012.29 (4): 324-332

Tilahun, A., Mengistu, S., Roothaert, R. 2005. Identification of Livestock Feed Production in Ethiopian Highlands.

Tolera, A., Berg, T., Sundstol, F. 1999. The effect of variety on maize grain and crop residue yield and nutritive value of the stover. Animal Feed Science Technology 79: 165-177.

Underwood, E.J. 1981. The mineral nutrition of livestock. 2nd edition. Commonwealth Agricultural Bureau, London.

Underwood, E.J., Suttle, N.F. 1999. The mineral nutrition of livestock. 3rd edition. CAB International, Wallingford, UK.

Van Soest, P.J. 1994. Nutritional ecology of the ruminant, 2nd edition. Ithaca, NY USA: Comstock Publishing Associates/Cornell University Press. 476pp

Van Soest, P.J., Robertson, J.B., Lewis, B.A. 1991. Methods for dietary fibre, neutral detergent and non-starch polysaccharides in relation to animal nutrition. Journal of Dairy Science 74(10):3583-3597.






Original Manuscript