Determination of Nutrients and Anti-Nutrients Composition of Four Varieties of Yam Peel Meal

Abstract

The nutrients and anti-nutrients of four varieties of yam peel meals were investigated using the following parameters: proximate composition, mineral composition and some anti-nutrients (saponin, oxalate, trypsin inhibitor and tannin). The proximate result revealed significant differences (P<0.05) for all parameters considered. The crude protein ranged fromT1 (Dioscorea dumentorum) (11.43%) to T4 (Dioscorea rotundata) (12.44), making T4 the highest value for crude protein. Among the treatment means T4 had the highest values of all macro-minerals considered with Na 0.10%, K 0.89%, Ca 0.94%, P 0.27% and Mg 0.24%. Also for micro minerals T4 had significantly higher values of Mn 2.50%, Fe 75.40%, Zn 34.57 mg/kg and Cu 5.30 mg/kg. The least values for microminerals occurred in T3.T4 had the highest values of nutrients and T1 had the least except Trypsin inhibitors. Considering the appreciable values of crude protein (11.43%), least values of anti-nutrients and appreciable values of both micro and macro minerals, T1 (Dioscorea dumentoruim peel meal) is recommended among other yam peel meal varieties as a potential alternative feedstuff especially for monogastric animals.