Fermented foods have good nutritional and health benefits, and are produced via solidstate fermentation (SSF) technology. This study was carried out to produce a feed variety;mycomeat through the solid state fermentation using various agricultural by products forlivestock feeding. Pleurotus sajor caju was cultured on different agricultural substrates at 27 ± 2?C. The mutant strain was produced using random mutagenesis by exposing the wildstrain to ultra violet radiation for 30 min. The moisture content of the different agriculturalby products was maintained at 60 mg/g and apportioned into three sets: Treatment 1 con-tained agricultural substrate by product alone. Treatment: 2, in addition to agricultural byproduct, contained mutant strain of mushroom exposed to ultra violet radiation for 30 min.Treatment: 3, in addition to agricultural by product, contained wild strain of the mush-room. The set-up was incubated in the dark and monitored daily until full ramificationwas obtained. Strain improvement enhanced dry matter content of mycomeat producedfrom palm kernel meal (82.81 mg/g), the protein content and fat content followed a sim-ilar pattern. Strain improvement significantly (P = 0.1) reduced the NDF and ADF contentsof mycomeat produced from palm kernel meal, while fungal treatment reduced the crudefiber content of mycomeat produced from palm kernel meal. Mycomeat produced by cornbran and palm kernel meal were adjudged the best.