ABSTRACT
This study examined the yield and nutritional composition of oyster mushroom (Pleurotus ostreatus) grown on different substrates. The experiment consists of six treatments viz: Sawdust, Coconut-husk, Maize-cob, Maize-cob + Sawdust, Coconut-husk + Maize-cob and Sawdust + Coconut-husk. Each substrate was moistened and left over-night. Thereafter, 1 % CaCO3 and 5 % wheat bran were added into 600g of each substrate. The substrates were divided into three of 200g each. The replicates were put inside polythene bags of size 15 x 35 and steam sterilized at 121 ⁰C for 20 minutes in an autoclave. Sterilized substrates were inoculated with pleurotus spawn and then air-tight sealed. The substrates were kept in the dark room at 25 ⁰C to ramify. The ramified substrates were kept moist for mushroom to sprout. The result revealed that mushroom produce on sawdust substrate gave the highest yield on fresh weight basis (16.67 ±1.20g). While sawdust + coconut-husk performed best in terms of nutritional composition with 14.00 % ash, 2.63 % protein, 42.87 % carbohydrates, 2.70 % calcium, 1650 % phosphorus and 0.42 % nitrogen. The study recommends sawdust for commercial production of oyster mushroom and sawdust + coconut-husk for optimum nutritional benefits.
Key words: Keywords: Pleurotus ostreatus, Yield, Nutritional composition, Substrates, Ekiti State.
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