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饲用苎麻与饲用玉米不同比例混合青贮的研究

Mixed Silage of Forage Ramie and Maize Silage with Different Proportions
作者
郑霞(中国农业科学院麻类研究所)
侯振平(中国农业科学院麻类研究所)
戴求仲(中国农业科学院麻类研究所)
陈青(中国农业科学院麻类研究所)
吴端钦(中国农业科学院麻类研究所)
中文关键词
饲用玉米;饲用苎麻;混合青贮;饲用价值
英文关键词
Forage maize; forage ramie; mixed silage; feeding value
中文摘要
将鲜饲用苎麻与全株饲用玉米按质量比分别为100:0(CON)、90:10(R10)、80:20(R20)和60:40 (R40)贮存45 d后,进行感官评价及青贮饲料品质分析,旨在考察调制青贮饲料时二者适宜的混合比例。结果表明:混合青贮随着苎麻比例的增加,气味打分下降,但是各处理的综合感官评价均为1级优等;苎麻添加组的pH值、粗蛋白质(CP)及粗灰分(Ash)含量显著高于对照组(P<0.05),但是显著降低了其总能值(GE)(P<0.05);R20和R40组的干物质采食量高于CON组,但未达到显著水平(P>0.05),而且混合处理对相对饲用价值(RFV)、有机物质消化率(OMD)、总可吸收营养物质(TDN)及净能(NE1)等也无显著影响(P>0.05)。在本试验条件下,建议鲜饲用苎麻与全株玉米混合青贮时适宜占比为20%~40%。
英文摘要
The paper aims to investigate the suitable mixing ratio of forage maize and forage ramie in silage production. We made the mixed silage of forage maize and ramie with ratio of 100:0 (CON), 90:10 (R10), 80: 20 (R20) and 60:40 (R40) for 45 days, and then measured the sensory evaluation and quality analysis of the samples. The results showed that: the odor rating of the mixed silage decreased, but the comprehensive sensory evaluation of all treatments was excellent with the increasing proportion of forage ramie; the pH value, crude protein (CP) and ash contents of the ramie additive groups were significantly higher than that of CON (P<0.05), but the gross energy (GE) significantly decreased (P<0.05); the dry matter intake of R20 and R40 was higher than that of CON (P>0.05); and the mixed treatment had no significant effect on relative forage value (RFV), organic matter digestibility (OMD), total digestible nutrient (TDN) and net energy (NE1) (P>0.05). Under the condition of the experiment, we suggest that the suitable proportion of forage ramie should be 20%- 40%.
DOI10.11924/j.issn.1000-6850.casb18050151