首页|基于主成分和CSQS评价全国不同区域全株玉米青贮质量

基于主成分和CSQS评价全国不同区域全株玉米青贮质量

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
本试验旨在利用主成分和全株玉米青贮质量分级评分(CSQS)方法，探究全国不同区域规模化牧场窖贮的全株玉米(Zea mays)青贮品质，为评价和制作全株玉米青贮饲料提供理论依据。结果表明:1)不同地区的全株玉米青贮饲料营养成分和发酵质量差异显著(P＜0。05)。2)全株玉米青贮质量分级评分(CSQS)通过粗蛋白质含量、淀粉含量、粗脂肪含量、30h中性洗涤纤维消化率4个营养指标，以及氨态氮含量、乳酸含量2个发酵指标将17个不同省份青贮饲料分为5个等级。不同地区全株玉米青贮品质由高到低依次是黄淮海地区(CSQS=64。42)(山东、河北、河南、安徽);东北地区(CSQS=59。72)(黑龙江、吉林、辽宁及内蒙古);西北地区(CSQS=58。99)(陕西、山西、青海、甘肃、新疆及宁夏);西南地区(CSQS=52。87)(云南和贵州);华南地区(CSQS=48。41)(广西)。其中黄淮海地区制作青贮饲料质量品质较好。3)根据主成分分析前3个主成分累积贡献率83。201％，这3个主成分分别反映了全株玉米青贮的中性洗涤纤维消化率、粗纤维和有机酸方面的综合品质。
Evaluation of whole-plant maize silage quality in different regions of China based on principal component and silage quality grading score analyses
The aim of this study was to investigate the quality of whole-plant maize silage stored in cellars in different regions of China using principal component and whole-plant maize silage quality grading score(CSQS)analyses,and to provide a theoretical basis for the evaluation and production of whole-plant maize silage.The nutrient composition and fermentation quality of whole corn silage in different regions were significantly different(P＜0.05).The CSQS was used to classify 17 provinces into five grades with respect to four nutritional indicators(crude protein,starch,crude fat content,and neutral detergent fiber digestibility30h),and two fermentation indicators(ammonia and lactic acid contents).The whole-plant corn silage quality in different regions was found to descend in the following order:(CSQS=64.42)in the Yellow and Huaihai regions(Shandong,Hebei,Henan,and Anhui);(CSQS=59.72)in the northeast region(Heilongjiang,Jilin,Liaoning,and Inner Mongolia);(CSQS=58.99)in the northwest region(Shaanxi,Shanxi,Qinghai,Gansu,Xinjiang,and Ningxia);(CSQS=52.87)in southwest China(Yunnan and Guizhou);and(CSQS=48.41)in south China(Guangxi).Among these regions,the best quality silage was made in the Yellow and Huaihai regions.Principle component analysis revealed neutral detergent fiber digestibility,crude fiber,and organic acids as the three principal components,with a cumulative contribution of 83.201％,which reflected the comprehensive quality of whole-plant maize silage.

coarse feednutrient compositionfermentation indexsilage quality classification indexnear infraredcorrelationprincipal component analysis

陈延斌、陈雅坤、沈旖帆、王建平、赵连生

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中国农业科学院北京畜牧兽医研究所/动物营养学国家重点实验室,北京 100193

河南科技大学动物科技学院,河南洛阳 471000

粗饲料 营养成分 发酵指标 青贮质量分级指数 近红外 相关性 主成分分析

国家重点研发计划项目家畜产业技术体系北京市创新团队项目中国农业科学院科技创新工程项目&&新型蛋白饲草的创制与评价项目(首农食品集团自立科技项目)

2022YFD1301002BAIC05-2022ASTIP-IAS07-12024-YWF-ZX-05

2024

10.11829/j.issn.1001-0629.2023-0101

草业科学
中国草原学会 兰州大学草地农业科技学院

草业科学

CSTPCD北大核心
影响因子：0.854
ISSN：1001-0629
年,卷(期)：2024.41(6)
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