2种秸秆与全株构树混贮发酵品质及瘤胃体外产气特性  

Fermentation Quality and In Vitro Rumen Gas Production of Corn Straw Wheat Straw Mixed with Whole Conformation Tree

作　　者：孙颖超 柴雨昕 侯国庆 陈永成 郑晓凯 杨鉴琦 张凡凡[1] SUN Ying-chao;CHAI Yu-xin;HOU Guo-qing;CHEN Yong-cheng;ZHENG Xiao-kai;YANG Jian-qi;ZHANG Fan-fan(College of Animal Science&Technology,Shihezi University,Shihezi,Xinjiang 833000,China;Xinjiang Production and Construction Corps Seventh Division Institute of Agricultural Sciences,Kuiton,Xinjiang 833200,China;College of Animal Science&Technology,Sichuan Agricultural University,Chengdu,Sichuan Province 610000,China)

机构地区：[1]石河子大学动物科技学院,新疆石河子833000 [2]新疆生产建设兵团第七师农业科学研究所,新疆奎屯833200 [3]四川农业大学动物科技学院,四川成都610000

出　　处：《草地学报》2024年第10期3297-3304,共8页Acta Agrestia Sinica

基　　金：南疆重点产业创新发展支撑计划项目(2022DB017);财政部和农业农村部-国家牧草体系项目(CARS-34)资助。

摘　　要：本研究旨在探索新疆地区主要作物秸秆与全株构树(Broussonetia papyrifera L.)的混合青贮发酵特性,为提高秸秆资源利用效率、改善构树发酵品质提供理论依据。试验共设7个处理,分别为CK组(100%全株构树青贮),C_(1)组[90%全株构树+10%玉米(Zea mays L.)秸秆],C_(2)组(70%全株构树+30%玉米秸秆),C_(3)组(50%全株构树+50%玉米秸秆),W 1组[90%全株构树+10%小麦(Triticum aestivum L.)秸秆],W 2组(70%全株构树+30%小麦秸秆),W 3组(50%全株构树+50%小麦秸秆)。测定自然发酵90天发酵前后各处理组的营养成分、发酵品质、微生物数量,并进行瘤胃体外产气试验。结果表明:与CK组相比,混合发酵中的粗蛋白含量、pH值、氨态氮含量和霉菌数量均显著降低(P<0.05),乳酸菌数量、乳酸含量均显著升高(P<0.05);混合青贮的有机物消化率、代谢能均显著低于CK组(P<0.05)。综上,全株构树与玉米、小麦秸秆混合青贮(1∶1)可显著改善青贮发酵品质。The purpose of this study was to explore the fermentation characteristics of dominant straw and whole-plant Broussonetia papyrifera in Xinjiang province,and to provide a theoretical basis for improving the utilization efficiency of straw resources and the fermentation quality of B.papyrifera.A total of 7 treatments were set up in the experiment,and each treatment had 7 replicates,including CK group(whole-plant B.papyrifera silage),C_(1) group(90% whole-plant B.papyrifera and 10%corn straw),C_(2) group(70% whole-plant B.papyrifera and 30% corn straw),C_(3) group(50% whole-plant B.papyrifera and 50%corn straw),W 1 group(90% whole-plant B.papyrifera and 10% wheat straw),W 2 group(70% whole-plant B.papyrifera and 30% wheat straw),W 3 group(50% whole-plant B.papyrifera and 50% wheat straw).After 90 days of fermentation,the nutritive value,fermentation quality,microbial number and in vitro gas production of rumen were measured.The results showed as follows:1)compared with CK group,the dry matter loss rate,pH value,ammonia nitrogen content and mold number of mixed silage fermentation system decreased significantly(P<0.05)with the increase of the addition ratio of the two straws.The number of lactic acid bacteria and lactic acid content significantly increased(P<0.05).2)The organic matter digestibility and metabolic energy of mixed silage of whole plant Broussonetia papyrifera and straw were significantly lower than those of CK group(P<0.05).The mixed silage(1∶1)of whole-plant B.papyrifera with corn straw and wheat straw could significantly improve the fermentation quality of silage.

关 键 词：玉米秸秆 小麦秸秆 全株构树 发酵品质 瘤胃体外产气 

分 类 号：S816.53[农业科学—饲料科学]