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Effects of various levels of cassava hay on rumen ecology and digestibility in swamp buffaloes

Lookup NU author(s): Dr Peter Rowlinson


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Four, mature rumen fistulated male swamp buffaloes with an average initial weight of 426±25 kg were randomly allocated to receive dietary treatments according to a 4x4 Latin square design. Four dietary treatments with varying proportions of urea-treated rice straw (UTRS) and cassava hay (CH) were offered (100:0, 75:25, 50:50, 0:100). Each feeding period lasted 21 days, the first 14 days for feed adjustment and intake measurement and the final 7 days for rumen fluid and faecal collections. The results demonstrated the potential use of both UTRS and CH as roughage sources. As levels of CH increased in the diets pH values were maintained (6.5-7.0). Ruminal NH3-N concentrations were significantly (p<0.05) raised as higher levels of CH were incorporated into the diets. Moreover, cellulolytic and proteolytic bacterial populations were enhanced while total protozoal counts were decreased (p<0.05). In addition, DM, OM and CP digestibilities and their digestible intakes as well as estimated energy increased with increasing levels of CH in the diets. The results suggest a favorable effect of CH substituting for UTRS.

Publication metadata

Author(s): Chanjula P, Wanapat M, Wachirapakorn C, Rowlinson P

Publication type: Article

Publication status: Published

Journal: Asian-Australasian Journal of Animal Sciences

Year: 2004

Volume: 17

Issue: 5

Pages: 663-669

Print publication date: 01/05/2004

ISSN (print): 1011-2367

ISSN (electronic):

Publisher: Asian - Australasian Association of Animal Production Societies