Chemical Composition and In Vitro Digestibility of Pleurotus ostreatus Spent Rice Straw
Gado, Hany; HM Khattab; AZM Salem; LM Camacho; MM El-Sayed; AM Kholif; AA El-Shewy; AE Kholif;
Abstract
The nutritive value of rice straw (RS) and Pleurotus ostreatus spent rice straw (SRS) was studied
by analyzing its proximate composition, fiber fractions, in vitro digestibility, amino acids content and
scanning electron microscopy (SEM). The possibility of replacing berseem clover (BC; Trifolium
alexandrinum) with SRS at different levels also was studied. Results showed higher protein content for
SRS compared to RS (3.4 to 11.7%) while, DM, OM, NFE, CF, NDF, ADF, ADL, hemicellulose and
cellulose were less for SRS than for RS. Highest concentration of amino acids (mg/100 g) was in SRS
compared to RS. The SEM showed an extensive damage of SRS when compared to RS. Data also
showed that SRS had higher in vitro dry matter disappearance (DMD) and in vitro organic matter
disappearance (OMD) compared to RS. Results of in vitro study also, indicated that the levels of 50 and
90% replacement had the highest values of DMD and OMD compared to the other levels. It could be
concluded from this study that treatment of RS with Pleurotus ostreatus improved the potential feeding
value of the resultant substrates (i.e. SRS) as feed resources for ruminants and possibility of replacing
BC with SRS at high levels of up to 50 or 90% from diets.
by analyzing its proximate composition, fiber fractions, in vitro digestibility, amino acids content and
scanning electron microscopy (SEM). The possibility of replacing berseem clover (BC; Trifolium
alexandrinum) with SRS at different levels also was studied. Results showed higher protein content for
SRS compared to RS (3.4 to 11.7%) while, DM, OM, NFE, CF, NDF, ADF, ADL, hemicellulose and
cellulose were less for SRS than for RS. Highest concentration of amino acids (mg/100 g) was in SRS
compared to RS. The SEM showed an extensive damage of SRS when compared to RS. Data also
showed that SRS had higher in vitro dry matter disappearance (DMD) and in vitro organic matter
disappearance (OMD) compared to RS. Results of in vitro study also, indicated that the levels of 50 and
90% replacement had the highest values of DMD and OMD compared to the other levels. It could be
concluded from this study that treatment of RS with Pleurotus ostreatus improved the potential feeding
value of the resultant substrates (i.e. SRS) as feed resources for ruminants and possibility of replacing
BC with SRS at high levels of up to 50 or 90% from diets.
Other data
Title | Chemical Composition and In Vitro Digestibility of Pleurotus ostreatus Spent Rice Straw | Authors | Gado, Hany ; HM Khattab ; AZM Salem ; LM Camacho ; MM El-Sayed ; AM Kholif ; AA El-Shewy ; AE Kholif | Keywords | Chemical composition;Straw;Pleurotus ostreatus;Biodegradation;Spent rice straw | Issue Date | 1-Sep-2013 | Publisher | Animal Nutrition and Feed Technology |
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