Lactic Acid Bacteria and Cellulase Improve the Fermentation Characteristics, Aerobic Stability and Rumen Degradation of Mixed Silage Prepared with Amaranth and Rice Straw

被引：1

作者：

Ma, Jian ^{[1
]}

Fan, Xue ^{[2
]}

Wu, Tingting ^{[1
]}

Zhou, Jiaxin ^{[1
]}

Huang, Haozhan ^{[1
]}

Qiu, Tianzhen ^{[1
]}

Xing, Zhewei ^{[1
]}

Zhao, Zhihui ^{[1
]}

Yin, Fuquan ^{[1
]}

Gan, Shangquan ^{[1
]}

机构：

[1] Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang 524088, Peoples R China

[2] Northwest Normal Univ, Coll Life Sci, Lanzhou 730070, Peoples R China

来源：

FERMENTATION-BASEL | 2023年 / 9卷 / 09期

关键词：

aerobic stability; amaranth; rice straw; rumen degradability; silage additive; CHEMICAL-COMPOSITION; PROTEIN; DEGRADABILITY; DIGESTIBILITY; QUALITY; CORN;

D O I：

10.3390/fermentation9090853

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The aim of this experiment is to investigate the effects of lactic acid bacteria and cellulase on the fermentation quality, chemical composition, aerobic stability and ruminal degradation characteristics of mixed silage prepared with amaranth and rice straw. Lactic acid bacteria and cellulase were used as silage additives, and the four treatments were as follows: control group (CON, no additive), lactic acid bacteria group (LAB, additive amount was 5 mg/kg fresh matter), cellulase group (CEL, 2 mg/kg) and lactic acid bacteria and cellulase group (LBC, additive amount was the same as in the individual treatments). All treatments were ensiled for 60 days. The dry-matter, crude-protein, neutral-detergent-fiber and acid-detergent-fiber ruminal degradability of silage were analyzed utilizing the nylon bag method. Compared with the CON group, the inoculation of lactic acid bacteria and cellulase individually promoted the fermentation of mixed silage to a certain degree. The combined inoculation of mixed silage significantly increased (p < 0.05) the concentrations of lactic acid and dry matter, while it reduced (p < 0.05) the pH and ammonia nitrogen/total nitrogen, harmful microorganism counts and contents of acetic acid, neutral detergent fiber and acid detergent fiber. In addition, the aerobic stability time of the LBC group was lower (p < 0.05) than that of the other groups. The ruminal degradation rate of dry matter, crude protein, neutral detergent fiber and acid detergent fiber in the LBC group was significantly increased (p < 0.05) compared to the CON group. Overall, the addition of the additives mentioned earlier improved the quality of mixed silage composed of amaranth and rice straw, and the best results were obtained by combining the inoculation of lactic acid bacteria and cellulase.

引用

页数：15