Sanon et al., 2005. Livest. Res. Rural Dev., 17 (12): 147
The amount of fallen leaves and fruits (litter), which is available and accessible to animals, was evaluated for three browse species in Sahelian area of Burkina Faso: A. raddiana, B. aegyptiaca and Z. mauritiana. The amount of leaves and fruits collected on the ground varied with the height and the species of trees. The available amount of leaves and fruits was 1373 and 4107 g for A. raddiana, 569 and 70 g for B. aegyptiaca and 248 and 1743 g for Z. mauritiana, respectively. The availability of browse fodder components lasted 4 months and was higher in January, mainly due to the highest contribution of A. raddiana pods. A significant positive relationship (R2>0.90) was found between the available forage of A. raddiana and physical parameters of the trees. For B. aegyptiaca and Z. mauritiana, this relationship was weak. The contribution of the available browse fodder to the potential production of pastures was important in glacis and sandy soil pasture with regards to the importance of species investigated in the woody flora composition of these pastures. Chemical analysis of samples from these species showed high contents of crude protein (5-20.6% of DM) and minerals (3.31-18.18% of DM), while the contents in cell wall was low (13.63-33.86% of DM for ADF and 20.20 to 39.56% of DM for NDF). However, the amount of lignin (5.13-15.87% of DM) and cell wall degree of lignification (25-54%) was also high.