CAJ | 학술논문

【目的】提高稻草的利用效率。【方法】对贵州和四川栽培的6个水稻品种的适宜性进行了对比研究。水稻收割完后将秸秆样品切成约2～5 cm长，然后按鲜重比50 g/kg添加玉米粉，并对稻草鲜样和青贮饲料的主要营养成分（TBN、WSC、CP、NDF、ADF）进行测定，经过40 d的青贮然后对其 pH 值和感官特征分别进行测定和评估。【结果】稻草的营养成分受基因和生长环境的影响而发生变化，基因比生长环境对稻草的影响更大，说明育种方法能提高其使用价值。ZY-238、CXY-6和GY系列（P＞0?05）等6个品种之间的ADF和NDF含量没有明显的差异，但却显著高于Ⅱ-Y系列（P＜0?05，P＜0?01）中ADF和NDF的含量。Ⅱ-Y系列的 WSC和CP 含量比其他品种高，GY系列的 WSC含量处于中间水平，在同一系列中还有类似的特征。Ⅱ-Y系列和GY系列中的DM、WSC、CP含量随种植区域和品种的变化而变化。【结论】即使不是优质稻草，在人工添加玉米粉的条件下也能成功青贮，WSC 含量增加，p H 值和 TBN 含量减少。稻草鲜样青贮之后添加玉米粉和乳酸菌，p H 值降到4?2以下，TBN 含量小于0?12％，WSC和CP增加到2?5 g/kg和6?89 g/kg ，ADF和NDF含量明显降低。从整体上来说，Ⅱ-Y 系列和GY-257稻草青贮适宜性更好，青贮饲料在添加了玉米粉和乳酸菌之后质量显著提高。
【목적】제고도초적이용효솔。【방법】대귀주화사천재배적6개수도품충적괄의성진행료대비연구。수도수할완후장갈간양품절성약2～5 cm장，연후안선중비50 g/kg첨가옥미분，병대도초선양화청저사료적주요영양성분（TBN、WSC、CP、NDF、ADF）진행측정，경과40 d적청저연후대기 pH 치화감관특정분별진행측정화평고。【결과】도초적영양성분수기인화생장배경적영향이발생변화，기인비생장배경대도초적영향경대，설명육충방법능제고기사용개치。ZY-238、CXY-6화GY계렬（P＞0?05）등6개품충지간적ADF화NDF함량몰유명현적차이，단각현저고우Ⅱ-Y계렬（P＜0?05，P＜0?01）중ADF화NDF적함량。Ⅱ-Y계렬적 WSC화CP 함량비기타품충고，GY계렬적 WSC함량처우중간수평，재동일계렬중환유유사적특정。Ⅱ-Y계렬화GY계렬중적DM、WSC、CP함량수충식구역화품충적변화이변화。【결론】즉사불시우질도초，재인공첨가옥미분적조건하야능성공청저，WSC 함량증가，p H 치화 TBN 함량감소。도초선양청저지후첨가옥미분화유산균，p H 치강도4?2이하，TBN 함량소우0?12％，WSC화CP증가도2?5 g/kg화6?89 g/kg ，ADF화NDF함량명현강저。종정체상래설，Ⅱ-Y 계렬화GY-257도초청저괄의성경호，청저사료재첨가료옥미분화유산균지후질량현저제고。
Obj ective The aim of this study was to enhance use efficiency of rice straw?[Method]In this paper,the suitability of rice straw was compared among six typical rice varieties in Sichuan and Guizhou?The straw was collected j ust after harvesting and cut into chip (2-5 cm )?Corn flower was added based on 50 g/kg (fresh weight)?The main nutrient components,such as TBN (ammoniacal nitrogen),WSC (water-soluble carbohydrate),CP (crude protein),NDF (neutral detergent fiber)and ADF (acid detergent fiber)were determined in both fresh straw and silage?The pH value and sensory characteristics were assessed after 40 days?[Results]Nutrition compo-nents of RS were different among genes and growing environments and the former was more im-portant than the latter,which suggested that breeding method may enhance usage value?There was no significant differences in ADF and NDF among six varieties within ZY-238,CXY-6 and GY series (P>0? 05)but they were significantly higher than those of Ⅱ-Y series (P<0? 05,P<0? 01)?The WSC and CP contents of Ⅱ-Y series were richer than those of other varieties?The WSC value of GY series was in the middle level and there were similar in a same series?The DM, WSC and CP values of Ⅱ-Y and GY series varied with planting area and variety (P<0? 05 )?[Conclusion]The unsuitable rice straw can ensilage by adding corn flower?WSC content was in-creased and pH and TBN were decreased?The straw was ensilaged with corn flower and LAB?The pH value was less than 4? 2 and TBN value was less than 0? 12%?WSC and CP were in-creased to 2? 5 g/kg and 6? 89 g/kg,respectively?However,ADF and NDF contents were also significantly decreased?As a whole,the ensilage suitability of Ⅱ-Y series and GY-257 RS was better and silage quality was improved significantly by adding corn flower and LAB.