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Metagenomic Analysis of Silage
Published on: January 13, 2017
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Effect of Garlic Straw with Silage Corn Stalks on Hu Sheep Rumen Fermentation and Microbial Community In Vitro
Yangyang Shen1,2,3, Jianli Zhang1,2,3, Hongbing Gui1,2,4
1Institute of Animal Science, Jiangsu Academy of Agriculture Sciences, Nanjing 210014, China.
Metabolites
|December 22, 2023
Summary
Garlic straw and silage corn stalks improve Hu sheep digestion and rumen microbes, with optimal benefits seen at a 60% garlic straw ratio. This blend offers a valuable feed resource for ruminants.
Area of Science:
- Animal Science
- Rumen Microbiology
- Nutritional Biochemistry
Background:
- Garlic straw is a nutrient-rich byproduct with potential as a forage resource for livestock.
- Limited research exists on the effects of combining garlic straw with silage corn stalks on Hu sheep digestion and rumen microbiota.
- Understanding these interactions is crucial for optimizing feed strategies and animal health.
Purpose of the Study:
- To investigate the impact of varying ratios of garlic straw and silage corn stalks on the digestive metabolism of Hu sheep.
- To analyze the alterations in rumen microbiota composition and function in response to this feed mixture.
- To determine the optimal ratio of garlic straw to silage corn stalks for enhancing feed utilization and potentially reducing greenhouse gas emissions.
Main Methods:
- In vitro fermentation experiments were conducted using six different ratios of garlic straw to silage corn stalks.
- Nutrient composition, dry matter digestibility, and in vitro gas production were measured.
- Rumen microbiota was analyzed using 16S rRNA sequencing to identify dominant bacterial groups and assess community structure.
Main Results:
- Garlic straw exhibited a comparable relative feeding value (RFV) to silage corn stalks.
- Optimal dry matter digestibility and in vitro gas production were achieved at a 60% garlic straw inclusion ratio.
- Volatile fatty acid (VFA) production, including acetic, propionic, and butyric acids, was highest at 60% garlic straw.
- Prevotella, Rikenellaceae RC9 gut group, and Succiniclasticum were dominant genera; higher Prevotella abundance in the G80 group suggests implications for greenhouse gas mitigation.
Conclusions:
- Garlic straw can be effectively utilized as a component of Hu sheep feed when combined with silage corn stalks.
- A 60% inclusion ratio of garlic straw appears optimal for enhancing digestive metabolism and VFA production.
- The study provides insights into rumen microbial shifts and potential strategies for reducing ruminant greenhouse gas emissions.
