利用尼龙袋法比较象草和麦秸在奶水牛瘤胃中的降解特性  

Rumen Degradation Characteristics of Elephant Grass and Wheat Straw in Dairy Buffaloes by Nylon Bag Method

作　　者：彭丽娟 罗鲜青 曾繁泉 王克耀 杨承剑 PENG Lijuan;LUO Xianqing;ZENG Fanquan;WANG Keyao;YANG Chengjian(Guangxi Key Laboratory of Buffalo Genetics,Reproduction and Breeding,Guangxi Buffalo Research Institute,Nanning 530001,China)

机构地区：[1]广西壮族自治区水牛研究所,农业农村部(广西)水牛遗传繁育重点实验室,南宁530001

出　　处：《动物营养学报》2024年第6期3693-3701,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：广西科技重大专项(桂科AA22068099-8);广西自然科学基金项目(2023GXNSFAA026424);国家现代农业产业技术体系广西创新团队建设项目(nycytxgxcxtd-2021-21-03)。

摘　　要：本试验旨在研究台湾甜象草、桂牧1号杂交象草和小麦秸秆各营养成分及其在奶水牛瘤胃中的降解特性。试验采用尼龙袋法测定3种粗饲料的干物质(DM)、粗蛋白质(CP)、中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)的瘤胃降解参数,并对其常规营养成分进行分析。结果表明:3种粗饲料中桂牧1号杂交象草的CP含量最高,显著高于其他2种粗饲料(P<0.05),CP含量由高到低的顺序依次是桂牧1号杂交象草>台湾甜象草>小麦秸秆。3种粗饲料的NDF含量差异不显著(P>0.05),台湾甜象草的ADF含量显著低于桂牧1号杂交象草和小麦秸秆(P<0.05)。3种粗饲料的DM、CP、NDF、ADF有效降解率由高到低依次均为台湾甜象草>桂牧1号杂交象草>小麦秸秆。综上所述,台湾甜象草和桂牧1号杂交象草饲用价值较高,可作为奶水牛的优质粗饲料来源;小麦秸秆可做进一步加工或搭配其他优质粗饲料加以利用。This experiment was conducted to study the nutritional components and degradation characteristics of Taiwan sweet elephant grass,Guimu No.1 hybrid elephant grass and wheat straw in dairy buffalo rumen.The rumen conventional nutritional components and degradation parameters of dry matter(DM),crude protein(CP),neutral detergent fiber(NDF)and acid detergent fiber(ADF)of the three roughages were determined by nylon bag technology.The results showed that the CP content of Guimu No.1 hybrid elephant grass was the highest among the three roughages,which was significantly higher than that of the other two roughages(P<0.05).The CP content of Guimu No.1 hybrid elephant grass>Taiwan sweet elephant grass>wheat straw was in the order from high to low.There was no significant difference in NDF content among the three roughage(P>0.05),and the ADF content of Taiwan sweet elephant grass was significantly lower than that of Guimu No.1 hybrid elephant grass and wheat straw(P<0.05).The effective degradation rates of DM,CP,NDF and ADF of the three roughages were Taiwan sweet elephant grass>Guimu No.1 hybrid elephant grass>wheat straw from high to low.In conclusion,Taiwan sweet elephant grass and Guimu No.1 hybrid elephant grass have high feeding value and can be used as high-quality roughage source for milk buffalo,and wheat straw can be further processed or used with other high-quality roughage.

关 键 词：尼龙袋法 台湾甜象草 桂牧1号杂交象草 小麦秸秆 奶水牛 瘤胃降解 

分 类 号：S816[农业科学—饲料科学]