Advanced SearchSearch Tips
The Intake and Palatability of Four Different Types of Napier Grass (Pennisetum purpureum) Silage Fed to Sheep
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
The Intake and Palatability of Four Different Types of Napier Grass (Pennisetum purpureum) Silage Fed to Sheep
Manyawu, G.J.; Sibanda, S.; Chakoma, I.C.; Mutisi, C.; Ndiweni, P.;
  PDF(new window)
Four different types of silage from new cultivars of Napier grass (Pennisetum purpureum), cv. NG 1 and NG 2, were fed to eight wethers in order to evaluate their preference and intake by sheep. The silages were prepared from direct-cut NG 1 herbage; pre-wilted NG 1 herbage; NG 1 herbage with maize meal (5% inclusion) and NG 2 herbage with maize meal (5% inclusion). All silages were palatable to sheep. Maize-treated silage had high quality fermentation, characterized by high Fleig scores and low pH, volatile fatty acids (VFA) and ammoniacal nitrogen contents. The pH, Fleig score, in vitro digestible organic matter (IVDOMD) and ammoniacal-N contents for maize-treated cv. NG 1 silage were 3.7, 78, dry matter (DM ) and DM whereas, in maize-treated cv. NG 2 they were 3.6, 59, DM and DM, respectively. The superior quality of maize-treated silages made them more preferable to sheep. Among the maize-fortified silages, palatability and intake were significantly (p<0.001) greater with cv. NG 1. Although direct-cut silage had better fermentation quality compared to wilted silage, wilted silage was significantly (p<0.001) more preferable to sheep. However, there were no significant differences (p<0.05) in the levels of preference and intake of wilted silage compared to maize-treated cv. NG 2 silage, even though the latter tended to be more palatable. There were indications that high pH (4.6 vs 3.5) and IVDOMD content (476 vs DM) of wilted silage contributed to higher intake, compared to direct-cut silage. It was generally concluded that pre-wilting and treatment of Napier grass with maize meal at ensiling enhances intake and palatability.
Napier Grass;Penisetum Purpureum;Silage;Pre-wilting;Maize Meal;Additives;
 Cited by
Allen, S. E. 1989. Chemical Analysis of Ecological Materials. 2nd Edition. Blackwell Scientific Publications, London, United Kingdom. pp. 164-175

Butris, G. Y. and C. J. C. Phillips, 1987. The effect of herbage surface water and the provision of supplementary forage on the intake and feeding behaviour of cattle. Grass and Forage Science. 42:259-264 crossref(new window)

Baumont, R., A. Grasland, and A. Detour, Short-term preferences in sheep fed ryegrass as a fresh forage, silage and hay. In: van der D. Hiede, E. A. Huisman, E. Kanis, J. W. M. Osse, and Verstegen, M. W. A. (Ed.). Regulation of feed intake. Proceedings of the 5th Zodiac Symposium 22-24 April 1998, Wageningen, The Netherlands pp.123-138

Carpintero, M. C., A. J. Holding, and P. Mcdonald. 1969. Fermentation studies on lucerne. Journal of the Science of Food and Agriculture. 20:677-681 crossref(new window)

Catchpoole, V. R. and E. F. Henzell. 1971. Silage and silage-making from Tropical Herbage species. Herbage Abstracts. 41(3):213-221

Cushnahan, A., F. J. Gordon, and C. P. Ferris. 1994. An examination of the role of silage juice on the intake of silage. Irish Journal of Agriculture and Food Research. 33:141-148

Dawson, L. E. R., C. P. Ferris, R. W. J. Steen, F. J. Gordon, and D. J. Kilpatrick. 1999. The effect of wilting grass before ensilage on silage intake. Grass and forage Science. 54:237-247 crossref(new window)

Dulphy, J. P. and C. Dermaquilly. 1991. Digestibility and voluntary intake of conserved forage. In: G. Pahhlow and H. Honig, (Ed.). Forage conservation towards 2000, proceedings of European Grassland federation. Landbauforschug Volkenrode, Sonderheft123, pp.140-160

Dulphy, J. P. and M. van Os. 1996. Control of voluntary intake of precision chopped silages by ruminants: a review. Reproduction, Nutrition, Development 36:113-135

Elsden, S. R. and Q. H. Gibson. 1954. The estimation of lactic acid using ceric sulphate. Biochemistry Journal. 58:154-158

Haigh, P.. and J. W. G. Parker. 1985. Effect of silage additives and wilting on silage fermentation, digestibility and intake, and on liveweight change of young cattle. Grass and Forage Science. 40: 429-436 crossref(new window)

Harrison. J. H., R. L. Kincaid, K. A. Loney, R. E. Riley and J. Cronrath. 1994. Fermentation and nutritive value of Zea mays and lucerne forage ensiled with added rolled barley. Grass and Forage Science. 49:130-137 crossref(new window)

Jones, D. I. H. 1988. The effect of cereal incorporation on the fermentation of spring-and autumn cut silage in laboratory silos. Grass and Forage Science. 43:167-172 crossref(new window)

Jones, D. I. H., R. Jones and G. Moseley. 1990. Effect of incorporating rolled barley in autumn-cut ryegrass on effluent production, silage fermentation and cattle performance. Journal of Agricultural Science (Cambridge). 115:399-408 crossref(new window)

Manyawu, G. J., L. Lungu, C. Chakoma and S. Sibanda. 1996. Limitations in the supply of forage resources and ensilage of Pennisetums grown to feed dairy cattle in two small-holder farming areas of Zimbabwe. DR&SS: Division of Livestock and Pastures Annual Report

Manyawu, G. J., S. Sibanda, I. Chakoma and B. Dzowela. 1998. Screening napier grass (Pennisetum purpureum) and interspecific hybrids between Napier grass and Pearl millet (P. americanum) for fodder production in different agro-ecological environments of Zimbabwe. Project Review on Intergrated Livestock/crop production systems in the smallholder farming systems in Zimbabwe. Proceedings of a Workshop held at the University of Zimbabwe, Dept. of Animal Science, Zimbabwe, on 13-26 January 1998. pp.81-109

Manyawu, G. J., S. Sibanda, C. Mtisi and I. Chakoma. 2000. The effect of cereal malt and graded levels of maize meal on the fermentation of Napier grass (Pennisetum purpureum) silage. Proceedings of a review workshop held in Harare, Zimbabwe, 10-13 January 2000. UZ/RVAU/DIAS/DANIDA/-ENRECA publcation. pp.167-179.

Proceedings of a review workshop held in Harare, Zimbabwe, 10-13 January 2000. UZ/RVAU/DIAS/DANIDA/-ENRECA publcation. pp.167-179

Manyawu, G. J. 2001. Forage production and ensilage potential of Napier grass (Pennisetum purpureum) and Napier${\times}$Pearl millet (P. purpureum x P. americanum) interspecific hybrids in smallholder dairy feeding systems. A PhD thesis submitted to the University of Zimbabwe, Animal Science Department: p.207

McDonald, P. 1981. The Biochemistry of Silage. John Wiley and Sons, New York

Mead, R and R. N. Curnow. 1987. Statistical Methods in Agriculture and Experimental Biology. Chapter 6. London, Chapman and Hall. on the nutritive value of silage. Grass and Forage Science. 44:391-397

O'Keily, P. and R. E. Muck. 1998. Grass silage. In: J. H. Cherney and D. J. R. Cherney (Ed.). Grass for dairy Cattle. CABI Publishing, UK, pp.223-251

Pettersson, K. L. and S. Lindgren. 1990. The influence of the carbohydrate fraction and additives on silage quality. Grass and Forage Science. 45:223-233 crossref(new window)

Ruxton, I. B., B. J. Clack and P. McDonald. 1975. A review of the effects of oxygen on silage. Journal of the British Grassland Society. 30:23-29 crossref(new window)

Steen, R. W. J., J. F. Gordon, L. E. R. Dawson, R. S. Park, C. S. Mayne, D. J. Agnew, D. J. Kilpatrick and M. G. Porter. 1998. Factors affecting the intake of grass silage by cattle and prediction of silage intake. Animal Science, (Br). 66:115-127

Thomas, J. W., L. A. Moore, M. Okamoto and J. F. Sykes. 1961. A study of factors affecting rate of intake of heifers fed silage. Journal of Dairy Science. 44:1471-1483

Tilley, J. M. A. and R. A. Terry. 1963. A two stage technique for the in vitro digestion of forage crops. Journal of the British Grassland Society 33:13-18 crossref(new window)

Van Soest, J. M. Bremnar and D. R. Keeney. 1965. Journal of Analytical Chemistry ACTA. 32:4835

Van Soest, P. J. and J. B. Robertson. 1985. An analysis of forage and fibrous foods. A laboratory manual 613. Cornell University, N.Y.

Wilkins, R. J. 1984. A review of the effects of wilting on the composition and feeding values of silage. In: E. Zimmer and R. J. Wilkins (Ed.). Efficiency of silage systems: a Comparison Between Wilted and Unwilted Silages. Landbauforschung Volkenrode, Sonderheft 69:71-72.

Woodard, C. A. R, G. M. Prine and D. T. Bates. 1991. Silages characteristics of Elephant grass as affected by harvesting frequency and genotype. Agronomy Journal 83:547-551.

Woolford, M. K. 1984. The silage fermentation. Marcel Dekker, Inc. New York and Basel.

Yokota, H., J. H. Kim, T. Okajima, and M. Ohshima. 1992. Nutritional quality of wilted Napier grass (Pennisetum purpureum Schum.) ensiled with or without molasses. Asian-Aust. Association of Animal Science. 5(4):673-679.