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Wang K, Sun S, Zou Y, Gao Y, Gao Z, Wang B, Hua Y, Lu Y, Hu G, Qin L. Effect of Growth Stage on Nutrition, Fermentation Quality, and Microbial Community of Semidry Silage from Forage Soybean. Plants (Basel) 2024; 13:739. [PMID: 38475585 DOI: 10.3390/plants13050739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/02/2024] [Accepted: 03/03/2024] [Indexed: 03/14/2024]
Abstract
Soybean (Glycine max (Linn.) Merr.) is highly suitable as animal feed. The silage quality and microbial characteristics of soybean silage are still unclear. Forage soybean (HN389), at six different growth stages (R2-R7), were used as experimental materials to investigate the changes in fermentation, nutritional quality, and microbial characteristics of semidry silage after 0, 7, 14, 30, and 45 d. As the growth period extended, the content of crude protein (CP) and crude fat (EE) gradually increased, while the neutral detergent fiber (NDF) and the acid detergent fiber (ADF) content decreased. The pH value also decreased gradually with fermentation time, accompanied by increases in the proportion of ammonia-N and the content of lactic acid (LA) and acetic acid (AA). In addition, competitive inhibition was observed in the microbial fermentation. With the process of ensiling, Lactobacillus became the dominant bacterial species. The results indicate that the most active stage of fermentation during ensiling occurred within the first 7 days, the fermentation and nutritional quality of the soybean forage were improved, and the optimal mowing stage was the grain stage. Comparison of the microbial abundance showed that all microorganisms entered a stable stage at 30 days of silage. After storage, the dominant bacteria were Lactobacillus, Enterobacter, and Pantoea.
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Affiliation(s)
- Kexin Wang
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Shengnan Sun
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Yilin Zou
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Yongqi Gao
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Zifeng Gao
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Bo Wang
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Yi Hua
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Yalin Lu
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Guofu Hu
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Ligang Qin
- Department of Grassland Science, College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
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