草地学报 ›› 2022, Vol. 30 ›› Issue (7): 1909-1917.DOI: 10.11733/j.issn.1007-0435.2022.07.034

• 技术研发 • 上一篇    

基于主成分分析的精料、构树和全株玉米青贮的组合效应评价

张丹丹1, 张元庆1, 梁圆2, 程景1, 王栋才1, 李博1, 孙锐锋1, 靳光1, 徐芳1   

  1. 1. 山西农业大学动物科学学院, 山西 太原 030032;
    2. 山西农业大学动物医学学院, 山西 太原 030031
  • 收稿日期:2021-12-27 修回日期:2022-03-07 发布日期:2022-08-02
  • 通讯作者: 张元庆,E-mail:yuanqing_zhang@163.com
  • 作者简介:张丹丹(1991-),女,汉族,山西阳城人,研究实习员,硕士,主要从事动物营养与饲料科学研究,E-mail:zhusha1991520@126.com
  • 基金资助:
    谷子高粱产业技术体系(CARS-06-13.5-A30);山西省农业科学院畜牧兽医研究所所项目(Xms202001)资助

Evaluation of the Associative Effects of Concentrate、Broussonetia papyrifera and Whole Plant Corn Silage based on Principal Component Analysis

ZHANG Dan-dan1, ZHANG Yuan-qing1, LIANG Yuan2, CHENG Jing1, WANG Dong-cai1, LI Bo1, SUN Rui-feng1, JIN Guang1, XU Fang1   

  1. 1. College of Animal Science, Shanxi agricultural university, Taiyuan, Shanxi Province 030032, China;
    2. College of Veterinary Medicine, Shanxi agricultural university, Taiyuan, Shanxi Province 030031, China
  • Received:2021-12-27 Revised:2022-03-07 Published:2022-08-02

摘要: 本试验旨在利用主成分分析评价精料、构树和全株玉米青贮以不同比例组合后的组合效应,筛选最佳组合比例。试验设计3个精粗比(40∶60,50∶50,60∶40),15种日粮组合比例,利用体外模拟瘤胃发酵测定15个组合的瘤胃发酵指标,通过主成分分析法对其进行综合评价。精粗比40∶60时,40∶60∶0和40∶45∶15组的氨态氮(NH3-N)含量较高;精粗比50∶50时,50∶0∶50,50∶12.5∶37.5和50∶25∶25组的72 h产气量(GP72)较高(P>0.05),50∶25∶25组的NH3-N含量最高;精粗比60∶40时,60∶10∶30组的乙酸(AA)、丙酸(PA)和总挥发性脂肪酸(TVFA)浓度显著高于其他各组(P<0.05)。精料∶构树∶全株玉米青贮比例为60∶10∶30,综合主成分值最大。在本试验条件下,日粮中添加构树可以改善肉牛体外瘤胃发酵性能,当精料∶构树∶全株玉米青贮比例为60∶10∶30时,组合效果最佳。

关键词: 构树, 精粗比, 体外产气法, 主成分分析

Abstract: The objective of this experiment was to evaluate the associative effects of different feed combinations based on principal component analysis. The experiment set 3 concentrate to forage ratios (40:60,50:50 and 60:40) and a total of 15 feed combinations with concentrate,Broussonetia papyrifera and whole plant corn silage. Rumen fermentation characteristics were measured using in vitro gas production method and comprehensively evaluated by principal component analysis. The NH3-N in 40:60:0 and 40:45:15 groups were higher (P>0.05) when the ratio of concentrate to forage was 40:60. When the ratio of concentrate to forage was 50:50,the GP72 in the groups 50:0:50,50:12.5:37.5 and 50:25:25 were higher (P>0.05),and the NH3-N in 50:25:25 group was the highest. When the ratio of concentrate to forage was 60:40,the concentrations of acetic acid,propionic acid and TVFA in the 60:10:30 group were significantly higher than the other groups (P<0.05). The comprehensive combination effect value is the largest when the concentrate:Broussonetia papyrifera:whole plant corn silage was 60:10:30. In conclusion,the supplemental of Broussonetia papyrifera can improve the in vitro rumen fermentation characteristics of cattles. It was the best combination effect when the concentrate:Broussonetia papyrifera:whole plant corn silage was 60:10:30 based on principal component analysis.

Key words: Broussonetia papyrifera, The concentrate to forage ratio, In vitro rumen fermentation, Principal component analysis

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