化学处理提高甘蔗渣营养价值的研究

THE EFFECT OF UREA,Ca(OH)_2 AND NaOH TREATMENT ON COMPOSITION AND IN VITRO ORGANIC MATTER DIGESTIBILITY OF BAGASSE

甘蔗渣细胞壁物质含量高达90 % ,木质素含量为13.5 % ,粗蛋白含量为2.3 %。通过尿素、Ca(OH)2和NaOH处理后 ,中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和木质素均有不同程度的下降 ,而体外有机物消化率(IVOMD)明显提高。其中 ,尿素的作用较小 ,Ca(OH)2 作用次之 ,尿素和Ca(OH)2 处理后IVOMD只能达到麦秸的水平 ,只有加入NaOH才能获得较满意的效果。甘蔗渣通过30g 尿素 +70gCa(OH) 2 g/kgDM、30g尿素 +70gCa(OH)2+20gNaOHg/kgDM、30g 尿素 +40gNaOHg/kgDM、30g尿素 +80NaOHg/kgDM处理后 ,体外有机物消化率从原来的21.82 %分别提高到33.93 %、40.05 %、35.38 %和58.32 %。

Bagasse has 90% cell-wall substance,13.5% lignin and 2.3% crude protein.The cell-wall substance and lignin of bagassed decreased and the crude protein increased by the treatment with urea,Ca(OH)2 and NaOH.IVOMD of the sugar cane residue was markedly increased from 21.82% to 33.93%,40.05%,35.38% and 58.32% by treatment with 30g urea+70g Ca(OH)2 g/kgDM,30g urea+70gCa(OH)2+20g NaOH g/kgDM,30g urea+40g NaOH and 30g urea+80g NaOH g/kgDM, respectively.