Identification of potential untapped herbaceous flora in the mid rift valley of Ethiopia and their nutritive value

Abstract

This study was conducted with the objective to identify untapped herbaceous flora that were used as livestock feed and to determine their chemical composition in wet season. Twelve peasant associations (PAs) and a total of 120 households were selected for the study. Key informants were also used for vernacular name identification and utilization. Samples were also taken from their edible parts for analysis of dry matter (DM), crude protein (CP), total ash, neutral detergent fiber (NDF), acid detergent fiber (ADF), cellulose and lignin. A total of 17 different herbs and forbs were identified which have a feed value for different livestock species. The CP values of species ranged between 10.9 to 27.86% with the highest value being recorded in Sida ovata Forssk. while the lowest value was recorded in Gutenbergia rueppellii Sch.Bip. The NDF value ranged from 26.1 to 53.16%. The highest NDF value was recorded in G. rueppellii Sch.Bip. and the lowest was recorded in Achyranthus aspera L. Generally, the differences within species and among different species in terms of chemical composition of these browses was significant. Some of them contain crude protein content of more than 190 g/kg DM, which has a capacity of supplementing poor quality roughages.