WOOD ASH

Maize cobs are an abundant agricultural by-product with limited feeding value due to their low protein content and high fiber composition. Ensiling is a preservation method that can enhance the quality of crop residues, while additives such as wood ash extract may further improve fermentation and nutrient retention. Freshly harvested maize cobs were divided into three groups: one treated with wood ash extract, another soaked in water for 30 mins and the other ordinary maize cobs. The first treatment was ensiled for seven days under anaerobic conditions. At the end of the ensiling period, samples were analyzed for chemical composition (crude protein, crude fiber, ash content, and moisture) and physical properties (color, odor, and texture). Results showed that the wood ash extract treatment (Trt3) was highly effective. It significantly reduced Crude Fiber (from 30.42% to 24.72%), indicating successful alkaline delignification, and lowered Carbohydrates (from 55.44% to 31.26%) through chemical breakdown and fermentation. This treatment also acted as a mineral supplement, significantly increasing the total Ash content (from 1.55% to 3.98%) and fortifying the cobs with Calcium (105.6 mg/100mg) and Sodium (44.75 mg/100mg).