动物营养学报2023，Vol.35Issue(12)：8122-8132,11.DOI:10.12418/CJAN2023.735
基于主成分、隶属函数和全株玉米青贮质量评分指数综合评价我国不同规模奶牛场的全株玉米青贮质量
Whole-Plant Corn Silage Quality in Different Scale Dairy Farms was Evaluated Based on Principal Component,Subordinate Function and Whole-Plant Corn Silage Quality Score Index
摘要
Abstract
The aim of this study was to investigate the quality of whole-plant corn silage on dairy farms of dif-ferent scales in China,compare three comprehensive evaluation methods for silage quality and to provide a the-oretical basis for its use in silage quality evaluation and preparation of high-quality silage.Four hundred and seventy-four whole-plant corn silage samples were collected from different scale dairy farms in 17 provinces and regions in China,the relevant indicators of whole-plant corn silage quality were detected,and a compre-hensive analysis of whole-plant corn silage quality in different scale dairy farms was carried out using principal component analysis,subordinate function analysis and whole-plant corn silage quality score index(CSQS)a-nalysis methods,respectively.The results showed as follows:1)there were significant differences in the con-tents of dry matter,crude protein,neutral detergent fiber,starch,ether extract and lactic acid in whole-plant corn silage from different scale dairy farms(P＜0.05);2)the principal component analysis extracted five prin-cipal components,with a cumulative contribution rate of 85.01％,reflecting most of the information of the o-riginal index;3)the results of principal component analysis,subordinate function analysis and CSQS analysis,the quality of whole-plant corn silage in different scale dairy farms was more than 5 000 cows,3 000 to 5 000 cows,1 000 to 2 999 cows,500 to 999 cows,and less than 500 cows in order from high to low.In conclu-sion,the larger the dairy farm,the better the quality of whole-plant corn silage.The results of the three com-prehensive evaluation methods are consistent,but the CSQS method is easier to popularize because it involves fewer indexes.[Chinese Journal of Animal Nutrition,2023,35(12):8122-8132]关键词
全株玉米青贮/主成分/隶属函数/全株玉米青贮质量评分指数/青贮质量/综合评价Key words
whole-plant corn silage/principal component/subordinate function/whole-plant corn silage qual-ity score index/silage quality/comprehensive evaluation分类
农业科技引用本文复制引用
陈雅坤,杨鹏标,闫威明,杨嘉宇,张建勇,呼德,赵连生,卜登攀..基于主成分、隶属函数和全株玉米青贮质量评分指数综合评价我国不同规模奶牛场的全株玉米青贮质量[J].动物营养学报,2023,35(12):8122-8132,11.基金项目
国家重点研发计划(2022YFD1301002) （2022YFD1301002）
中国农业科学院科技创新工程(ASTIP-IAS07-1) （ASTIP-IAS07-1）
中国农业科学院科技创新工程协同创新任务(CAAS-XTCX2016011-01) （CAAS-XTCX2016011-01）
家畜产业技术体系北京市创新团队(BAIC05-2023) （BAIC05-2023）
