Study on the Quality of Mixed Silage of Rapeseed with Alfalfa or Myriophyllum

Siwei Chen; Chen Wan; Yingjun Ma; Keqiang Zhang; Feng Wang; Shizhou Shen

doi:10.3390/ijerph20053884

Study on the Quality of Mixed Silage of Rapeseed with Alfalfa or Myriophyllum

Int J Environ Res Public Health. 2023 Feb 22;20(5):3884. doi: 10.3390/ijerph20053884.

Authors

Siwei Chen^{1

2

3}, Chen Wan^{1

2

3}, Yingjun Ma^{1

3

4}, Keqiang Zhang^{1

3}, Feng Wang^{1

3}, Shizhou Shen^{1

3}

Affiliations

¹ Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs, Tianjin 300191, China.
² College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China.
³ Dali Yunnan, Agricultural Ecosystem, National Observation and Research Station, Dali 671004, China.
⁴ College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China.

Abstract

The objective of this study was to improve the comprehensive rate of utilization of rapeseed (Brassica napus subsp. napus L.), Myriophyllum (Myriophyllum spicatum L.) spicatum and alfalfa (Medicago sativa L.), reduce resource waste and environmental pollution. In this experiment, the effects of different proportions of the mixed silage of rapeseed and alfalfa or M. spicatum on the fermentation and nutritional quality were analyzed and further improved the quality of mixed silage using molasses and urea. Rapeseed was separately silaged with alfalfa and M. spicatum based on the ratios of 3:7, 5:5 and 7:3. After 60 days of mixed silage, the fermentation index and nutrient contents were measured to explore the appropriate ratio of mixed silage. The mixing ratio of rapeseed and alfalfa was better at 3:7: The contents of NH₃-N/TN (4.61%), lactic acid (96.46 g·kg^-1 dry matter [DM]) were significantly higher (p < 0.05). The crude protein content (118.20 g·kg^-1 DM) was the highest (p < 0.05), while the pH (4.56) was the lowest when the mixing ratio of rapeseed and M. spicatum was 7:3. Considering the fermentation and nutrition quality, it is suggested that rapeseed and alfalfa should be mixed as silage at a ratio of 3:7 with 3% molasses and 0.3% urea, and rapeseed and M. spicatum should be mixed as silage at a ratio of 7:3 with 3% molasses.

Keywords: alfalfa; mixed silage; myriophyllum spicatum; rapeseed.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Brassica napus*
Brassica rapa*
Fermentation
Lactic Acid
Medicago sativa / chemistry
Nutritive Value
Silage / analysis

Substances

Lactic Acid

Grants and funding

This research was funded by professor Keqiang Zhang. And this research received founding from the Academician Expert Workstation of Yunnan Province (202105AF150075), the Major Science and Technology Project of Yunnan Province (202102AE090011), the Modern Agricultural Industry Technology System-National Dairy Cow Industry Technology System (CARS-36), and the Youth Foundation for Basic Research of Yunnan Province (2019FD120).