EFFECT OF DIFFERENT SAWDUST ON YIELD AND PROXIMATE ANALYSIS OF NAMDEC OYSTER MUSHROOMS

Abstract

The study was conducted at the Biochemistry laboratory and Mushroom Culture House (MCH) of the Department of Biochemistry, Sher-e-I3angla Agricultural University, Dhaka during the period from Januan' to June 2015 to study the effect ol different sawdust on yield and proximate analysis of NAMDEC oyster mushrooms. The highest mycelium running rate (0.76cmidays) was observed in '1'7. the lowest time required to complete myeelium running(16.60days) was observed in T7 tlie lowest time(5.43days) in T7 required from stimulation to primordial initiation, the lowest time (3.20days) in T, from primordial initiation to harvest .The highest average number of primordial /packet (90.21) in i'7 and the highest average number of fruiting body/packet(77.17) in T7.Avrage weight of individual fruiting body (3.2 Ig) was higher in T5.The highest length of stipe (2.96cm) in T7,the highest diameter of stipe (0.82cm) in 19, the highest diameter of pileus (8.60cm)in T7. and the highest thickness of pileus(0.72cm) in 'I',. NAMDUC Oyster-3 mushroom grown on Chambol sawdust gave the best result with the highest biological yield (187.70gm), economic yield (181.0gm), dry yield (18.84gm), biological efficiency (93.85%) and benefit cost ratio (4.25).The highest moisture content (89.86%) was observed in 1 1,thc highest dry matter content(10.55%) was observed in T2, the highest lipid content(3.87%) was observed in Ti. the highest crude fiber content(24.83%) was observed in Ts. the highest carbohydrate content( 1.18%) was observed in Ti the highest ash content(8.23%) was observed in T8 The highest phosphorus content(0.906%) was observed in T7 the highest potassium content(1.312%) was observed in T7. the highest calcium content (22.11mg/I OOg)was observed in T9.the highest magnesium contcnt(18.40mgJI00g) was observed in T1.thc highest iron content(42.27mgi100g)was observed in T7 T3 and T9 and the highest zinc content(l5.12mg/100g) was observed in 1 7.NA.MIDEC Oyster-3 mushroom with Chambol sawdust performed bcst in terms of percent protein (26.71%) and >1(4.27%) content.