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Aboud et al., 2005. Livest. Res. Rural Dev., 17 (8)

Document reference 
Aboud, A. A. O. ; Kidunda, R. S. ; Osarya, J., 2005. Potential of water hyacinth (Eichhornia crassipes) in ruminant nutrition in Tanzania. Livest. Res. Rural Dev., 17 (8)

Two experiments were conducted to investigate the potential of water hyacinth (Eichhornia crassipes) in ruminant nutrition in Tanzania. In the first experiment , biomass yield, chemical composition, in vitro dry matter (IVDMD) and organic matter digestibility (IVOMD) and in-sacco degradability of water hyacinth were investigated. In the second experiment water hyacinth was ensiled using 0, 10 and 20% molasses levels as an additive, and subsequently analysed for dry matter (DM), water soluble carbohydrates (WSC), IVDMD and IVOMD. Biomass yield (ton/ha/year) of water hyacinth was estimated as 322.2 tons (approx. 30.45 tons DM/ha/year at 9%-10% DM content) . Sun drying for 8 hours was adequate to wilt the fresh water hyacinth to a product of 15.35% DM, the chemical composition of which was 18%CP in leaves and in shoots. The whole plant showed significantly (P<0.001) lower DM digestibility (42.32%) compared to leaves and shoots (58.15 and 57.03%). No significant difference in dry matter digestibility was observed between leaves and shoots. Potential degradability was 68.09%, 60.82% and 52.91% for leaves, shoots and whole plant respectively. The rumen degradable fraction was 44.2%± 3.11 in the whole plant, 58.71%± 6.29 and 52.41%±1.38 in the leaves and shoots respectively. Addition of 10% or 20% molasses to WH silage significantly (P<0.001) improved IVOMD from 42.15% in untreated silage to respectively 54.6 and 52.76% .Likewise the in-sacco DM degradability was improved from 48.53% in untreated silage to 54.76% and 54.55%. The Crude Protein (CP) content was significantly (P<0.001) lower for 10 and 20 % molasses treated silage (80.75 and 77.68 gkg-1DM respectively) compared to untreated silage (97.61 gkg-1DM.). It was concluded that water hyacinth could provide large quantities of nutritious feed to ruminants in the Lake zone.

Citation key 
Aboud et al., 2005