The effect of white-rot basidiomycetes on chemical composition and in vitro digestibility of wheat straw.
Five white-rot basidiomycetes were evaluated for their potential to improve ruminal degradation of wheat straw. Polyorus brumalis, Lyophyllum ulmarium III, Trametes gibbosa, Pleurotus ostreatus, and a Pleurotus ostreatus mutant were incubated on wheat straw for 30 d at 28 degrees C. Detergent fiber, crude protein and in vitro dry matter digestibility (IVDMD) were determined. The results showed increasing crude protein and ash contents in fungus-treated straw. IVDMD values were increased in straws treated with P. ostreatus, P. ostreatus mutant and T. gibbosa only. Relative to untreated wheat straw the detergent fiber content-neutral detergent fiber (NDF), and acid detergent fiber (ADF) was reduced in fungus-treated straw and out of three fractions-hemicellulose, cellulose, and lignin, hemicellulose showed the largest proportionate loss whereas lignin the smallest one in all 5 samples of fungus treated straw.
Jalc
D
D
Institute of Animal Physiology, Slovak Academy of Sciences, Kosice, Slovak Republic.
Nerud
F
F
Zitnan
R
R
Siroka
P
P
D000821:Animal Feed / Q000382:microbiology*; D001487:Basidiomycota / Q000378:metabolism*; D002482:Cellulose / Q000032:analysis / Q000378:metabolism; D004043:Dietary Fiber / Q000032:analysis; D008031:Lignin / Q000032:analysis / Q000378:metabolism; D011134:Polysaccharides / Q000032:analysis / Q000378:metabolism; D011506:Proteins / Q000032:analysis; D014908:Triticum / Q000378:metabolism* / Q000382:microbiology*
D004043:Dietary Fiber; D011134:Polysaccharides; D011506:Proteins; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin