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添加不同发酵菌剂对巨菌草青贮饲料营养品质的影响

2022-07-09王国栋贺春贵顾娴郝生燕董俊

甘肃农业科技 2022年6期
关键词:营养品质青贮饲料

王国栋 贺春贵 顾娴 郝生燕 董俊

摘要:为探索发酵菌剂在巨菌草青贮中的效果,以不添加任何菌剂为对照,研究了3种发酵菌剂(EM菌液、聚能发酵剂、酶菌复合剂)对巨菌草青贮发酵品质的影响。结果表明,在巨菌草中添加微生物发酵菌剂后,一定程度上改善了青贮饲料的品质,使巨菌草青贮饲料pH降低,中性洗涤纤维减少,营养成分得到较好的保存。其中以每1 t 巨菌草揉丝原料添加2 L EM菌液处理组效果最好,不仅降低了巨菌草青贮饲料的pH,而且提高了粗蛋白含量,是3种供试发酵菌剂中的最优菌剂。

关键词:巨菌草;发酵菌剂;青贮饲料;营养品质

中图分类号:S816.5              文献标志码:A              文章编号:1001-1463(2022)06-0054-05

doi:10.3969/j.issn.1001-1463.2022.06.013

Effects of Different Silage Inoculants on Nutritional Quality of

Pennisetum giganteum

WANG Guodong 1, HE Chungui 1, GU Xian 2, HAO Shengyan 2, DONG Jun 2

(1. Gansu Agricultural University, Lanzhou Gansu 730070; 2. Institute of Animal Husbandry, Pasture and Green Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou Gansu 730070, China)

Abstract: To study the effects of different silage additives on the quality of Pennisetum giganteum Z. X. Linensiling, this study, with no inoculant as the control, studied the effects of 3 fermentation inoculants(EM bacteria liquid, energy-accumulating fermentation innoculant, enzyme and bacteria compound inoculant) on the fermentation quality of Pennisetum giganteum Z. X. Linsilage. Results showed that the quality of Pennisetum giganteum Z. X. Linsilage was improved to some extent with the adding of microbial inoculants, i.e., reduced pH value, reduced NDF content and more nutrients preserved, among which 2L of EM bacteria liquid added in every 1t of kneaded Pennisetum giganteum Z. X. Lin showed optimum output, this would not only reduce the pH value of ensiling but also increase the CP content, and EM bacteria liquid was the best inoculant among the 3 additives.

Key words: Pennisetum giganteum  Z. X. Lin; Fermentation inoculant; Silage; Nutritional quality

收稿日期:2022 - 04 - 07

基金項目:嘉峪关市科技重点研发计划“嘉峪关市紫花苜蓿品种引进及高产栽培模式研究与示范”(20-18);兰州市科技发展计划院地合作项目“低秋眠级紫花苜蓿抗蚜高产优质选育及应用推广”(2018-4-73)。

作者简介:王国栋(1982— ),男,甘肃兰州人,助理研究员,主要从事牧草育种栽培研究工作。Email:93053048@qq.com。

通信作者:贺春贵(1961— ),男,甘肃庆阳人,教授,博士,博士生导师,主要从事牧草栽培育种及饲草饲料研究工作。 Email:hechungui008@qq.com。

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