Comparison of silage and hay of dwarf Napier grass (Pennisetum purpureum) fed to Thai native beef bulls
- 58 Downloads
Both quantity and quality of forages are important in dry season feeding. Eight Thai native beef bulls were arranged in a Completely randomized design to evaluate dwarf Napier namely Sweet grass (Pennisetum purpureum cv. Mahasarakham) preserved as silage or hay on feed intake, digestibility, and rumen fermentation. The animals were fed with forage ad libitum supplemented with concentrate mixture at 1.0% of BW for 21 days; data were collected during the last 7 days. The results showed that there were differences (P < 0.05) between treatments in dry matter (DM) intake, DM digestibility, and ruminal pH, in which hay feeding gave enhanced feed intake and more favorable ruminal pH. Nevertheless, mean ruminal ammonia nitrogen, total volatile fatty acids (TVFAs), proportion of VFAs, bacterial and protozoal population, and blood urea nitrogen were similar (P > 0.05) in animals fed silage and hay. Sweet grass is better preserved as hay rather than silage.
KeywordsGrass Digestibility Feed utilization Ruminants
The authors would like to express our sincere thanks to the Tropical Feed Resources Research and Development Center (TROFREC), Department of Animal Science, Faculty of Agriculture, Khon Kaen University, Thailand, Thailand Research Fund (TRF) through the Royal Golden Jubilee Ph.D. Scholarship, TRF-IRG5980010, and TRF-IRN57W0002, for providing financial support for the research and the use of the research facilities.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- AOAC. 2012. Official methods of Analysis, 19th Animal Feed: Association of Official Analytical Chemists, VA.Google Scholar
- Forbes, M.J. 2007. Voluntary food intake and diet selection in farm animal. 2nd Biddles Ltd, King’s Lynn. UK.Google Scholar
- Galyen, M. 1989. Laboratory procedures in animal nutrition research. New Mexico State University.Google Scholar
- Halim, R.A., Shampazurini, S., and Idris, A.B. 2013. Yield and nutritive quality of nine Napier grass varieties in Malaysia. Malaysian Journal of Animal Science 16, 37–44.Google Scholar
- Kabirizi, J., Muyekho, F., Mulaa, M., Msangi, R., Pallangyo, B., Kawube, G., Zziwa, E., Mugerwa, S., Ajanga, S., and Lukwago, G. 2015. Napier grass feed resource: production, constraints and implications for smallholder farmers in eastern and central africa; the eastern african agricultural productivity project: Naivasha, Kenya.Google Scholar
- Roth, G.W., Ishler, V.A., and Jones, C.M. 2017. From Harvest to Feed: Understanding Silage Management. Penn State Extension. https://extension.psu.edu/from-harvest-to-feed-understanding-silage-management.
- Samuel, M., Sagathewan, S., Thomus, J., and Mathen, G. 1997. An HPLC method for estimation of volatile fatty acids of rumen fluid. Indian Journal of Animal Science 67, 805–807.Google Scholar
- SAS. 2004. What’s New in SAS® 90, 91, 912, and 913 Cary, NC: SAS Institute Inc.Google Scholar
- Steel, R.G.D., and Torrie, J.H. 1980. Principles and procedures of statistics: a biometrical approach. 2nd ed McGraw-Hill Book Co; New York, NY.Google Scholar