Do different livestock dwellings on single grassland share similar faecal microbial communities?

The research article discusses a comparative study of the microbial communities present in the feces of three different livestock animals – sheep, cattle, and horse – raised on the Xilingol steppe grassland.

Research Methodology

• The researchers used Illumina MiSeq sequencing and quantitative real-time polymerase chain reaction (qPCR), both powerful methods for studying microbial communities.
• Taking faecal samples from sheep, cattle, and horses, they investigated the bacterial, fungal, and archaeal communities present.

Key Findings

• The bacterial communities present were mainly comprised of Firmicutes and Bacteroidetes, yet differed significantly between the three animals. However, sheep and cattle showed a more similar bacterial community compared to horses.
• Fungal communities were dominated by Sordariomycetes, Leotiomycetes, and Dothideomycetes, showing a high similarity (95.51%) across all three types of livestock.
• The archaeal populations were mostly Methanobacteria and Methanomicrobia, known as methanogens, with cattle feces demonstrating the most diverse and populous methanogens.
• Potential pathogens such as Bacteroides spp., Desulfovibrio spp., and Fusarium spp. were detected in livestock faeces. These could pose a health risk to the livestock or be an indicator of their health status.

Significance of the Study

• Through this comparison, the paper provides a deeper insight into the microbiology of livestock digestive systems, specifically how they differ between species and how they are affected by the shared grassland environment.
• Understanding these microbial communities could potentially inform management strategies for livestock grazing and grassland restoration, especially with regard to optimizing livestock health and productivity.
• The study equally helps to make a note of the presence of potential pathogens, which can be useful when formulating preventive measures against diseases.