Nutritive Evaluation of Some Fodder Tree Species during the Dry Season in Central Sudan

  • Fadel Elseed, A.M.A. (United Graduate School of Veterinary Science, Yamaguchi University) ;
  • Amin, A.E. (Faculty of Veterinary Science, University of Khartoum) ;
  • Khadiga, (United Graduate School of Veterinary Science, Yamaguchi University) ;
  • Abdel Ati, A. (Faculty of Animal Production, University of Khartoum) ;
  • Sekine, J. (Faculty of Agriculture, Tottori University) ;
  • Hishinuma, M. (Faculty of Agriculture, Tottori University) ;
  • Hamana, K. (Faculty of Agriculture, Kagoshima University)
  • Received : 2001.10.16
  • Accepted : 2002.01.28
  • Published : 2002.06.01


The potential nutritive value was studied on leaves of seven fodder trees in Central Sudan during dry season at two distinct periods, the early dry and the late. The chemical composition, mineral concentration, in vitro organic matter digestibility (IVOMD), in situ OM or nitrogen degradability and estimated metabolizable energy showed a wide variation among fodder tree species and between different periods of the dry season. Crude protein (CP) ranged from 285 to 197 g/kg DM at early dry season, with a significant reduction in late dry season. Ziziphus spina-christi and Balanites aegyptiaca showed the least reduction in CP content. The NDF, ADF and lignin were about 200, 160 and 19 g/kg DM, respectively at the early period, and significantly increased at the late period of the dry season, except for lignin of Z. spina-christi. For mineral concentration, all fodder tree leaves were rich in calcium but poor in phosphorus. In situ OM degradability significantly decreased at the late period of dry season, but values remained as high as over 600 g/kg OM. At both periods, Z. spina-christi showed the highest value, while the lowest was recorded in Acacia seyal. The IVOMD showed a similar trend to those of in situ OM degradability, except for A. seyal. The nitrogen degradability was highest in B. aegyptiaca and lowest in Z. spina-christi at both periods. A significant and positive correlation had existed between CP and IVOMD or in situ OM degradability (r=0.68, p<0.05; r=0.77, p<0.05, respectively). Also, a significant but negative correlation was found between condensed tannins and nitrogen degradability (r=-0.87, p<0.01). Results demonstrated that Z. spina-christi potentially has a good nutritive value as dry season feed or supplement, while A. seyal tends to be less promising. A. nubica and B. aegyptiaca may be a useful source for degradable protein, even though it may have a limited supply of energy to animals. A. tortilis, A. mellifera and A. ehrenbergiana may have potential value for a supplementation of energy or protein, if they were harvested in the early dry season or in wet season as preserved feed. It is highly recommended to supplement with an appropriate amount of phosphorus when these fodder trees were used.


  1. FAO. 1998. Statistical database. Internet.
  2. Mohammed, T. A. and F. E. Salih. 1991. Effects of stage of maturity on the nutritive value of low rain woodland Savannah pasture. Sudan J. Anim. Prod. 4(1):23-36.
  3. Orskov, E. R., F. D. Hovell and F. Mould. 1980. The use of nylon bag technique for the evaluation of feedstuff. Trop. Anim. Prod. 5:195-213.
  4. SAS. 1993. User's guide. 6th Ed., SAS Inc. Cary NC.
  5. AOAC. 1984. Association of Official Analytical Chemists. Official Methods of Analysis. Washington, DC.
  6. NRC. 1985. National Research Council. Nutrient Requirements of Sheep (6th Ed.). National Academy Press. Washington, DC.
  7. Mtimuni, J. P. 1982. Identification of mineral deficiencies in soil, plant and animal tissues as constraints to cattle production in Malawi. Ph. D. Dissertation. University of Florida, Gainesville. Florida.
  8. Menke, K. H. and H. Steingass.1988. Estimation of the energetic feed value obtained from chemical analysis and in vitro gas production using ruminant fluid. Anim Res. Dev. 28:7-55.
  9. Dougal, H. W., V. M. Drysdale and P. E. Golver. 1964. The chemical composition of Kenya browse and pasture herbage. E. Afr. Wildl. J. 2:86-121.
  10. Walker, B. H. 1980. A review of browse and its role in livestock production in Southern Africa. In: Browse in Africa. (Ed. H. N. Le Houerou). The Current State of Knowledge. Addis Ababa, Ethiopia. ILCA. p. 355.
  11. Abdulrazak, S. A., T. Fujihara, J. K. Ondiek and R. E. Orskov. 2000. Nutritive evaluation of some Acacia tree leaves from Kenya. Anim. Feed Sci. Technol. 85:89-98.
  12. Elginaid, E. M. 1997. Feeding potential of important natural pastures and crop residues in Butana, Estern Sudan. Ph. D. Dissertation. University of Goethingen. Germany.
  13. Skarpe, C. and R. Bergstrom. 1986. Nutrient content and digestibility of forage plants in relation to plant phenology and rainfall in the Kalahari, Botswana. J. Arid Environ. 11:147-164.
  14. Aiple, K. P., H. Steingass and K. H. Menke. 1992. Suitability of a buffered fecal suspension as the inoculum in the Hohenheim gas test. J. Physiol. Anim. Nutr. 67:57-66.
  15. El-Hag, M. G. 1985. Animal Feed Resources in the Sudan, Potential, Supply and Problems, a paper presented at a Workshop on, Livestock Policy, Range and Feed Utilization Guideline for Drought-prone, African countries. Khartoum, Sudan.
  16. Rittner, U. and J. D. Reed. 1992. Phenolics and in vitro degradability of protein and fiber in West African browse. J. Sci. Food Agric. 58:21-28.
  17. Goering, H. K. and P. J. Van Soest. 1970. Forage fiber analysis (Apparatus, Reagent, Procedures and some Application). Agricultural HandBook No. 379. Agricultural Research Service. USDA, Washington, DC.
  18. Larbi, A., J. W. Smith, I. O. Kurdi, I. O. Adekunle, M. J. Raji and D. O. Ladipo. 1998. Chemical composition, rumen degradation and gas production characteristics of some multipurpose fodder trees and shrubs during wet and dry seasons in the humid tropics. Anim. Feed Sci. Technol. 72:81-96.
  19. Aganga, A. A., T. Adogla-Bessa, U. J. Omphile and K. Tshireletso. 2000. Significance of browse in the nutrition of Tswana goats. Arch. Zootec. 49:469-480.
  20. Price, M. L., V. S. Scoyoc and L. G. A. Butler. 1978. A critical evaluation for the vanillin reaction as an assay for tannins in sorghum grain. J. Agric. Food Chem. 26:1214-1218.
  21. Abu Sin, M. E. 1990. Literature survey. Baseline information and a profile of Central Butana. UNDP, Areas Development Program, Khartoum, Sudan.

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