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Ruminant Nutrition and Forage Utilization
Asian-Australasian Journal of Animal Sciences 2006;19(3): 381-385.
https://doi.org/10.5713/ajas.2006.381    Published online February 1, 2006.
Influence of Re-growth Interval on Chemical Composition, Herbage Yield, Digestibility and Digestion Kinetics of Setaria sphacelata and Cenchrus ciliaris in Buffaloes
Mahr-un- Nisa, M.Ajmal Khan, M. Sarwar*, M. Mushtaque, G. Murtaza, W. S. Lee, H. S. Kim
Correspondence:  M. Sarwar,
This study examined the influence of re-growth periods on chemical composition, biomass production, nutritive value and digestion kinetics of Setaria sphacelata (SS) and Cenchrus ciliaris (CC) in ruminally cannulated buffalo bulls. Two re-growth intervals i.e. clipping every month (CI1) and clipping after every two months (CI2) were compared with the control (clipped after 4 months). Mean values of leaf to stem ratio in SS and CC grasses were decreased (p<0.05) with increasing re-growth interval. The lowest leaf to stem ratio was recorded in control plots of both grasses. In both grasses, increasing growth period increased the concentrations of dry matter (DM), neutral detergent fiber (NDF) and organic matter (OM) and decreased crude protein (CP). Mean dry herbage, OM and CP yields of SS and CC were increased (p<0.05) with increasing re-growth interval. Ruminal DM and NDF digestibilities of SS and CC were decreased (p<0.05) with increasing interval. Ruminal rate of DM and NDF disappearance was higher while the ruminal lag time of these nutrients was lower with monthly than with bi-monthly clipping interval. The results from present study imply that SS and CC clipped after every two months is more beneficial than when clipped every month or every four months in terms of optimal biomass with adequate nutritional value for buffaloes.
Keywords: Stapf. Grass; Buffel Grass; Grass Maturity; Grass Sustainability; Clipping Interval

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