A lower cost method of preparing corn stover for Irpex lacteus treatment by ensiling with lactic acid bacteria.

IF 2.2 2区农林科学

Asian-Australasian Journal of Animal Sciences Pub Date : 2020-08-01 Epub Date: 2019-10-21 DOI:10.5713/ajas.19.0344

Sasa Zuo, Di Jiang, Dongze Niu, Mingli Zheng, Ya Tao, Chuncheng Xu

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引用次数: 5

Abstract

Objective: This study investigated a method of preparing corn stover for Irpex lacteus (I. lacteus) treatment to improve its in vitro rumen degradability under non-sterile conditions.

Methods: Corn stover was inoculated with Lactobacillus plantarum (L. plantarum), Lactobacillus buchneri (L. buchneri), and an equal mixture of these strains, and ensiled for 0, 3, 7, 14, and 28 days. After each period, a portion of the silage was sampled to assess the silage quality, and another portion of the silage was further treated with I. lacteus at 28°C for 28 d. All the samples were analyzed for fermentation quality, chemical composition, and in vitro gas production (IVGP) as a measure of rumen fermentation capacity.

Results: Lactic acid bacteria (LAB) was found to improve the silage quality of the corn stover, and the corn stover silage inoculated with L. plantarum produced more lactic acid and higher IVGP than other silage groups. The I. lacteus colonies flourished in the early stage of corn stover silage, especially on the 3-d corn stover silage inoculated with both L. plantarum and L. buchneri. This led to an 18% decrease in the acid detergent lignin content, and a 49.6% increase in IVGP compared with the raw stover.

Conclusion: The combination of ensiling with the mixed LAB inoculation and I. lacteus treatment provided a cost-effective method for the improvement of the IVGP of corn stover from 164.8 mL/g organic matter (OM) to 246.6 mL/g OM.

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一种成本较低的乳酸菌青贮玉米秸秆制备方法。

目的:研究在非无菌条件下制备玉米秸秆以提高乳糜泻体外瘤胃降解率的方法。方法:将玉米秸秆分别接种植物乳杆菌(L. plantarum)、布氏乳杆菌(L. buchneri)及其等量混合物，分别青贮0、3、7、14、28 d。每期结束后，取一部分青贮饲料进行青贮品质评价，另一部分青贮饲料在28℃条件下用乳酸乳杆菌处理28 d。分析所有样品的发酵品质、化学成分和体外产气量(IVGP)，以衡量瘤胃发酵能力。结果:乳酸菌能提高玉米秸秆青贮品质，且接种L. plantarum的玉米秸秆青贮产生的乳酸和IVGP均高于其他青贮组。乳酸菌菌落在玉米秸秆青贮初期繁盛，特别是在同时接种了植物乳杆菌和布氏乳杆菌的三维玉米秸秆青贮上。这导致酸性洗涤剂木质素含量下降18%，IVGP与原料秸秆相比增加49.6%。结论:青贮与乳酸菌混合接种和乳杆菌处理相结合，可将玉米秸秆的IVGP从164.8 mL/g有机质(OM)提高到246.6 mL/g OM，是一种经济有效的方法。

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来源期刊

Asian-Australasian Journal of Animal Sciences AGRICULTURE, DAIRY & ANIMAL SCIENCE-

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Asian-Australasian Journal of Animal Sciences (AJAS) aims to publish original and cutting-edge research results and reviews on animal-related aspects of the life sciences. Emphasis will be placed on studies involving farm animals such as cattle, buffaloes, sheep, goats, pigs, horses, and poultry. Studies for the improvement of human health using animal models may also be publishable. AJAS will encompass all areas of animal production and fundamental aspects of animal sciences: breeding and genetics, reproduction and physiology, nutrition, meat and milk science, biotechnology, behavior, welfare, health, and livestock farming systems.