Comprehensive Evaluation of Silage Quality of Whole Corn Silage for Different Varieties in Northeast China Based on Principal Component Analysis and Cluster Analysis

REN Lijuan; ZHAO Liangsheng; CHEN Yakun; WANG Jianping; BU Dengpan

doi:10.3969/j.issn.1006-267x.2020.08.044

2020 , Vol. 32 >Issue 8: 3856 - 3868

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.08.044

Comprehensive Evaluation of Silage Quality of Whole Corn Silage for Different Varieties in Northeast China Based on Principal Component Analysis and Cluster Analysis

REN Lijuan ,
ZHAO Liangsheng ,
CHEN Yakun ,
WANG Jianping ,
BU Dengpan

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1. Henan University of Science and Technology, College of Animal and Technology, Luoyang 471000, China;
2. Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing 100193, China

Received date: 2020-02-14

Online published: 2020-08-13

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Abstract

The purpose of this experiment was to study the silage quality of whole corn silage for different varieties stored in large-scale pastures in Northeast China, and to provide theoretical guidance for the selection of good corn varieties for planting and production of high-quality silage. Whole corn silages of 33 corn varieties were collected from large-scale pastures in Heilongjiang, Jilin and Liaoning provinces, and the silage quality was evaluated and the good variety was screened of them using principal component analysis and cluster analysis methods through the determination of conventional nutrient contents and fermentation quality. The results showed as follows:1) there were differences in the nutrient contents and fermentation quality of different varieties of whole corn silage. The differences among dry matter, acid detergent fiber, neutral detergent fiber, starch, ash and lactic acid contents were extremely significant (P<0.01). 2) The principal component analysis extracted 4 principal components, and the cumulative contribution rate reached 83.406%, reflecting most of the information of the original index. The top 5 varieties with comprehensive quality were Yuqingchu 23, Zhengda 12, Xianyu 335, Tunyu 168 and Fangyu 36. 3) Cluster analysis gathered 33 corn varieties silage into three categories. The first category was the varieties with better effects of planting and making silage in Northeast China, which were Tunyu 168, Xinong 3, Yuqingchu 23 and Zhengda No.12; the second category was the varieties with good effects of planting and making silage in Northeast China, which were Fangyu 36, Lvdan No.2, Demeiya No.1, Jifeng 30, Jiyuan 128, Jinling 17, Jintian No.9, Jinyu 28, Nongda 108, Tiedan No.10, Woyu No.3, Xianyu 335, Zhengdan 958, Zhongxing 618, Zhongkeyu 505 and Zhongdan 5384; the third category was the varieties with general effects of planting and making silage in Northeast China, including Jinding No.10, Jingang 50, Longdan 32, Xinyu 168, Beiqing No.1, Ganyu No.23, Dongdan 60, Guiqing No.1, Chengdan 1171, Hanyu No.5, Jinling 37, Jingke 516 and Tieyan 53. In summary, planting Yuqingchu 23, Zhengda 12, Xianyu 335, Tunyu 168 and Fangyu 36 in Northeast China have a better effect on making whole corn silage.

Key words： whole corn silage; silage quality; principal component analysis; cluster analysis

Cite this article

REN Lijuan , ZHAO Liangsheng , CHEN Yakun , WANG Jianping , BU Dengpan . Comprehensive Evaluation of Silage Quality of Whole Corn Silage for Different Varieties in Northeast China Based on Principal Component Analysis and Cluster Analysis[J]. Chinese Journal of Animal Nutrition, 2020 , 32(8) : 3856 -3868 . DOI: 10.3969/j.issn.1006-267x.2020.08.044

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