Feeding Value Ealuation of Mixed Silage of Whole Plant Green Quinoa and Green Corn by Using an In Vitro Gas Production Technique

doi:10.11733/j.issn.1007-0435.2021.11.002

Acta Agrestia Sinica ›› 2021, Vol. 29 ›› Issue (11): 2391-2398.DOI: 10.11733/j.issn.1007-0435.2021.11.002

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Feeding Value Ealuation of Mixed Silage of Whole Plant Green Quinoa and Green Corn by Using an In Vitro Gas Production Technique

LU Ping-le¹, WEI Yu-ming², YANG Fa-rong², JIANG Xiao-fan¹, LI Qian¹, ZHAO Sheng-guo¹, CAI Yuan¹, JIAO Ting³

1. College of Animal Science and Technology, Gansu Agricultural University Lanzhou 730070, China;
2. Institute of Pasture and Green Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China;
3. College of Pratacultural Science, Gansu Agricultural University/Key Laboratory for Grassland Ecosystem of Ministry of EduCartion, Sino-U. S. Centers for Grazingland Ecosystem Sustainability, Lanzhou 730070, China

Received:2021-06-10 Revised:2021-08-11 Online:2021-11-15 Published:2021-12-06

体外产气法评价全株藜麦与全株玉米混合青贮饲料饲用价值

路平乐¹, 魏玉明², 杨发荣², 江小帆¹, 李倩¹, 赵生国¹, 蔡原¹, 焦婷³

1. 甘肃农业大学动物科学技术学院, 甘肃兰州 730070;
2. 甘肃省农业科学院畜草与绿色农业研究所, 甘肃兰州 730070;
3. 甘肃农业大学草业学院, 草业生态系统教育部重点实验室, 中-美草地畜牧业可持续发展研究中心, 甘肃兰州 730070

通讯作者: 蔡原,E-mail:caiyuan@gsau.edu.cn;焦婷,E-mail:jiaoti@gsau.edu.cn
作者简介:路平乐(1997-),男,汉族,甘肃庆阳人,硕士研究生,主要从事畜牧领域E-mail:Gsau_lupingle@163.com
基金资助:
中央引导地方科技发展专项（特色藜麦产业培育及科技扶贫模式推广）；甘肃省现代农业科技支撑体系区域创新中心重点科技项目-高寒区饲草品种筛选与种养结合技术集成示范（2019GAAS51）；国家自然科学基金项目-不同海拔对藜麦产量和品质的影响及生理生态机制（30660357）

Abstract

Abstract: To improve feed utilization ratio of whole quinoa and find the best silage ratio with whole corn. A total of 11 combinations of whole quinoa and whole corn were set for silage fermentation,such as 100:0,90:10,80:20. The fermentation indexes of each silage were determined to screen the optimal silage ratio using grey correlation analysis after fermenting for 60 days.The results showed that GP tended was stable,in vitro fermentation was weakened and nearly stopped at 36 h in each treatment group. The contents of crude protein (CP) and ether extract (EE) in silage combination were significantly higher than those in other groups (P<0.05),meanwhile,the contents of acetic acid (AA),total volatile fatty acid (TVFA) and ammonia nitrogen (NH₃-N) in the combination were also significantly higher than those in other treatments (P<0.05),when the ratio of whole quinoa to whole corn was 90:10. The experiment results indicated that the nutritional quality and silage fermentation characteristics of mixed silage is the best in the ratio of whole quinoa to whole corn was 90:10,which could be used as high-quality mixed silage for livestock breeding.

Key words: Mixed silage, Quinoa, In vitro gas production, Grey correlation analysis

摘要： 为提高全株藜麦的饲料化利用率，寻找其与全株玉米的最佳青贮比，试验共设全株藜麦与全株玉米比为100：0，90：10，80：20等11个组合进行青贮发酵，发酵60 d后测定各组青贮料的体外产气发酵指标，使用灰色关联度分析筛选出最佳青贮比例。结果表明，体外发酵至36 h时，各处理组GP趋于稳定，体外发酵减弱接近停止；全株藜麦与全株玉米比例为90：10时，该青贮饲料组合的粗蛋白（CP）和粗脂肪（EE）含量显著高于其他各组（P<0.05），乙酸（AA）、总挥发性脂肪酸（TVFA）含量以及氨态氮（NH₃-N）浓度显著高于其他各处理（P<0.05）。分析表明，全株藜麦与全株玉米比例为90：10时，混合青贮饲料的营养品质和产气发酵特性综合表现最好，可作为优质混合青贮饲料在家畜养殖中推广使用。

关键词: 混合青贮, 藜麦, 体外产气法, 灰色关联度分析

CLC Number:

S816.5+3

LU Ping-le, WEI Yu-ming, YANG Fa-rong, JIANG Xiao-fan, LI Qian, ZHAO Sheng-guo, CAI Yuan, JIAO Ting. Feeding Value Ealuation of Mixed Silage of Whole Plant Green Quinoa and Green Corn by Using an In Vitro Gas Production Technique[J]. Acta Agrestia Sinica, 2021, 29(11): 2391-2398.

路平乐, 魏玉明, 杨发荣, 江小帆, 李倩, 赵生国, 蔡原, 焦婷. 体外产气法评价全株藜麦与全株玉米混合青贮饲料饲用价值[J]. 草地学报, 2021, 29(11): 2391-2398.

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Feeding Value Ealuation of Mixed Silage of Whole Plant Green Quinoa and Green Corn by Using an In Vitro Gas Production Technique

体外产气法评价全株藜麦与全株玉米混合青贮饲料饲用价值

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