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http://dx.doi.org/10.5713/ajas.19.0420

Effects of additives on the fermentation quality, in vitro digestibility and aerobic stability of mulberry (Morus alba L.) leaves silage  

Dong, Zhihao (Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University)
Wang, Siran (Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University)
Zhao, Jie (Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University)
Li, Junfeng (Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University)
Shao, Tao (Institute of Ensiling and Processing of Grass, College of Agro-grassland Science, Nanjing Agricultural University)
Publication Information
Asian-Australasian Journal of Animal Sciences / v.33, no.8, 2020 , pp. 1292-1300 More about this Journal
Abstract
Objective: To explore feed resources capable of replacing regular poor-quality fodder, this study was conducted to evaluate the effects of additives on the fermentation quality, in vitro digestibility and aerobic stability of mulberry leaves silage. Methods: The mulberry leaves were ensiled either untreated (control) or treated with 1×106 cfu/g fresh matter Lactobacillus plantarum (L), 1% glucose (G), 3% molasses (M), a combination of 1% glucose and Lactobacillus plantarum (L+G), and a combination of 3% molasses and Lactobacillus plantarum (L+M). The fermentation quality and chemical composition were analyzed after 7, 14, 30, and 60 d, respectively. The 60-d silages were subjected to an aerobic stability test and fermented with buffered rumen fluid to measure the digestibility. Results: Inoculating lactic acid bacteria (LAB) resulted in more rapid increase in lactic acid concentrations and decline in pH of mulberry leaves silage as compared control. Higher acetic acid and lower ethanol and ammonia nitrogen concentrations (p<0.05) were observed in the LAB-inoculated silages as opposed to control during ensiling. The LAB-inoculated silages contained lower water-soluble carbohydrates compared with control during the first 14 d of ensiling, and lower neutral detergent fibre (p<0.05) concentrations as compared with non-LAB inoculated silages. Adding molasses alone increased (p<0.05) the digestibility of dry matter (DM). The aerobic stability of mulberry leaves silage was increased by LAB inoculation, whereas decreased by adding glucose or molasses. Conclusion: The LAB inoculation improved fermentation quality and aerobic stability of mulberry leaves silage, while adding glucose or molasses failed to affect the fermentation and impaired the aerobic stability. Inoculating LAB alone is recommended for mulberry leaves especially when ensiled at a relatively high DM.
Keywords
Mulberry Leaves; Additives; Fermentation Quality; Aerobic Stability; In vitro Digestibility;
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Times Cited By KSCI : 2  (Citation Analysis)
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