棉花秸秆分别与全株玉米、甜菜渣混合青贮的营养价值研究  

Nutritional value study of cotton straws combined with whole maize and beet residue in mixed silage

作　　者：李龙龙 路顺萍 陈雪文 方雷[1,2] 伊敏江·阿卜杜热伊木 卢冬 张苏江[1,2] LI Long-long;LU Shun-ping;CHEN Xue-wen;FANG Lei;IMINJAN Abduljeim;LU Dong;ZHANG Su-jiang

机构地区：[1]新疆生产建设兵团塔里木畜牧科技重点实验室,新疆阿拉尔843300 [2]塔里木大学动物科学与技术学院,新疆阿拉尔843300

出　　处：《饲料研究》2024年第2期106-110,共5页Feed Research

基　　金：塔里木大学校长基金自然科学项目(项目编号:TDZKCX202307);塔里木大学研究生科研创新项目(项目编号:TDGRI202235)。

摘　　要：试验旨在探究棉花秸秆分别与全株玉米、甜菜渣混合青贮的营养特性及饲用价值。试验分为3组,对照组(CK组)使用全株玉米青贮,A组、B组棉花秸秆分别与全株玉米、甜菜渣按1∶1混合青贮,每组3个重复,发酵90 d后取样,分析青贮饲料的发酵品质、营养特性及饲用价值等指标。结果显示,与CK组相比,A组和B组青贮饲料的pH值升高(P<0.05),费氏评分降低(P<0.05);A组和B组的粗蛋白(CP)、中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)含量升高(P<0.05),非纤维性碳水化合物(NFC)含量降低(P<0.05)。A组饲料相对饲喂价值(RFV)和粗饲料相对质量(RFQ)高于B组(P<0.05)。与CK组相比,A组和B组的体外产气量降低,其中A组的体外产气量高于B组。A组和B组的干物质降解率(IVDMD)低于CK组(P<0.05)。研究表明,棉花秸秆分别与全株玉米、甜菜渣混合青贮饲料的饲用价值仍低于全株玉米青贮饲料,但A组与CK组的饲用价值较接近,应用潜力较高。The experiment aimed to explore the nutritional characteristics and feeding value of a mixed silage containing cotton stalks,whole corn plants,and sugar beet residue.The experiment was divided into three groups:The control group(CK group)used whole corn plant silage,while Group A and Group B used a 1∶1 mixture of cotton stalks with whole corn plants and sugar beet pulp for silage,with three replicates in each group.After 90 days of fermentation,samples were taken for analysis of silage fermentation quality,nutritional characteristics,and feeding value indicators.The results indicated that compared to the CK group,the pH values increased(P<0.05)and the Fisher's score decreased(P<0.05)in Group A and Group B.The CP,NDF,and ADF contentration increased(P<0.05),while the NFC content decreased in Group A and Group B(P<0.05).The RFV and RFQ of Group A were higher than those of Group B(P<0.05).Compared to the CK group,the in vitro gas production decreased in Group A and Group B,with Group A having higher gas production than Group B.The IVDMD of Group A and Group B was lower than that of the CK group(P<0.05).The study suggests that the feeding value of the mixed silage with cotton stalks,whole corn plants,and sugar beet residue is still lower than that of the whole corn plant silage.However,Group A exhibits a feeding value closer to that of the CK group,indicating higher application potential.

关 键 词：棉花秸秆 全株玉米 甜菜渣 混合青贮 发酵品质 营养特性 饲用价值 

分 类 号：S816.53[农业科学—饲料科学]