陈桂华,姜奥宇,陈东,郭楠,唐启源,陈坤.稻秸菌糠的营养成分及其瘤胃体外发酵特性[J].湖南农业大学学报:自然科学版,2021,47(4):.
稻秸菌糠的营养成分及其瘤胃体外发酵特性
  
DOI:
中文关键词:  食用真菌  水稻秸秆菌糠  营养成分  瘤胃体外发酵特性
英文关键词:edible fungi  rice straw substrate  nutrient composition  in vitro rumen fermentation characteristics
基金项目:国家重点研发计划项目(2018YFD0501800);国家水稻产业技术体系(CARS–01);湖南省草食动物产业技术体系
作者单位
陈桂华,姜奥宇,陈东,郭楠,唐启源,陈坤 1.湖南省洞口县农业农村局湖南 洞口 4223002.湖南农业大学动物科学技术学院湖南 长沙 4101283.湖南农业大学农学院湖南 长沙 4101284.湖南艾特农牧科技发展有限公司湖南 长沙 410128 
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中文摘要:
      选取平菇六月灰(PoL)、大毛木耳(AhI)、茶树菇(Aa)共3种食用真菌接种于稻秸混合基质,进行20 d发酵培养,长满菌丝后收集稻秸菌糠(菌菇菌糠一体)进行常规营养成分测定及采集山羊瘤胃食糜液,开展为期72 h瘤胃体外发酵特性分析,探究不同食用真菌发酵处理对稻秸营养成分和瘤胃体外发酵特性的影响。结果表明:PoL和AhI组粗蛋白质(CP)质量分数显著高于Aa组的,AhI和Aa组中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)质量分数显著低于PoL组的;PoL组瘤胃体外发酵甲烷、氢气及72 h总产气量、干物质降解率和总挥发性脂肪酸浓度均显著高于其他2组的,PoL组瘤胃体外发酵液pH显著低于其他2组的。由此得出,PoL稻秸处理组的CP质量分数较高,相比发酵前栽培料NDF和ADF降解程度较低,但体外发酵特性均优于另外2种真菌处理组,实际生产中可采用PoL发酵稻秸提高其饲用价值。
英文摘要:
      Three fungi of Pleurotus ostreatus Liuyuehui(PoL), Auriuolaria hispida Iwade(AhI) and Agrocybe aegirit(Aa) were inoculated with rice straw mixed substrate and fermented for 20 days. The collected rice straw substrate after the complete growth of hyphae was subject to the analysis of conventional nutrient composition, and the rumen chyme liquid from goat was also collected for characterization in vitro rumen fermentation for 72 hours to study the effects of different fungi fermentation treatments on the nutrient composition and in vitro rumen fermentation characteristics of rice straw substrate. The results showed the crude protein(CP) contents of PoL and AhI groups were significantly higher than that of Aa group, and the contents of neutral detergent fiber(NDF) and acid detergent fiber(ADF) in AhI and Aa groups were significantly lower than those of PoL groups. The methane, hydrogen and total gas production at 72 hours, dry matter degradation rate and total volatile fatty acid content of in vitro rumen fermentation in PoL group were significantly higher than those of the other two groups. In vitro rumen fermentation broth pH of PoL group was significantly lower than that of the other two groups. It was concluded that content of CP was higher in PoL rice straw treatment group, whose degradation degree of NDF and ADF were lower than those of culture materials, and in vitro rumen fermentation was better than the other two groups. PoL fermentation could be used to treat rice straw to improve its feeding value in practice.
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