@Article{, title={Effect of physical form and washing of treated and untreated rice straw with sodium hydroxide upon chemical composition and in vitro digestibility تاثير الشكل الفيزيائي وعملية الغسل لتبن الرز المعامل وغير المعامل بهيدروكسيد الصوديوم في تركيبه الكيميائي ومعامل هضمه المختبري}, author={S.H.Irhaif سندس هادي ارهيف and S.A.Hassan شاكر عبد الامير حسن and A.A. Hassan اشواق عبد علي}, journal={Baghdad Science Journal مجلة بغداد للعلوم}, volume={5}, number={2}, pages={182-187}, year={2008}, abstract={Hydroxide upon the chemical composition and dry matter(DM) and organic matter(OM) digestibility .Rice straw was treated with 4% sodium hydroxide using 30% of DM basis moisture, and incubated at 40 ºC for 40 days., DM digestibility (DMD) was significantly affected (P<0.01) by the treatment , where DMD increased The objective of this experiment was to study the effect of physical form (long ,chopped and ground ) and washing rice straw treated with sodium from 42.32 to 45.41% , OM digestibility (OMD) and total digestible nutrient (TDN) increased(P<0.05) from 47.38 and 49.33 to 49.67 and 52.83% ,respectively. While hemicellulose content increased (P<0.05 ) from 261.71 to 268.17 gm/kg DM ,and metabolizable energy (ME) from 7.11 to 7.48 MJ/ Kg DM. The NDF and lignin contents decreased (P<0.01) from 742.73 and 141.21 to 703.01 and 96.36 gm/ kg DM respectively . While dry matter (DM) ,organic matter (OM) and ADF contents decreased (P<0.05) from 987.99,854.18 and 481.02 to 962.45 ,852.35 and 434.83 gm /Kg DM, respectively. OM ,DMD and GE were affected significantly (P<0.05 ) by treating ground rice straw with sodium hydroxide compared with chopped and long rice straw, and in hemicellulose with ground and as it is compared with chopped . While NDF content decreased (P<0.05 ) in ground rice straw treated with sodium hydroxide .OMD and ME increased (P<0.05 ) in washed rice straw treated with sodium hydroxide .While DM,OM,NDF ,hemicellulose and cellulose content were decreased (P<0.05) .Furthermore, the best treatment which improved the nutritive value and in vitro digestibility of DM and OM was associated with washed and ground rice straw treated with sodium hydroxide.

تمت دراسة تاثير الشكل الفيزيائي(طويل أو مقطع أو مجروش) وعملية الغسل لتبن الرز المجفف المعامل بالصودا الكاوية بنسبة 4% على اساس المادة الجافة في التركيب الكيميائي ومعامل الهضم المختبري للمادة الجافة والمادة العضوية. تم رش تبن الرز بمحلول الصودا الكاوية بنسبة 1:1 محلول الى مادة جافة وباستخدام مستوى رطوبة 30% ودرجة حرارة حضن 40م ولمدة حضن 40 يوم وبواقع مكررين لكل معاملة. دلت نتائج المعاملة بهيدروكسيد الصوديوم على وجود زيادة عالية المعنوية المعنوية(p