Calf digestive issues can be a substantial hindrance to livestock health and productivity in the U.S dairy and beef industries. SARE-funded research conducted by Peixin Fan may provide insights on microbiome-guided strategies that offer beef and dairy farmers new options for improving livestock resilience and profitability.
Fan, then a PhD student at the University of Florida, examined a multi-breed Angus-Brahman beef cattle herd to better understand how the microbiomes of calves, influenced by genetic composition and diet, could reduce calf susceptibility to digestion concerns. With support from a Southern SARE Graduate Student grant, Fan studied the relationship between calf microbiomes and health, focusing on identifying beneficial bacteria that could combat harmful pathogens.
The results were promising and confirmed earlier findings that cattle with a higher Brahman genetic composition are more resistant to parasite diseases. The study also isolated bacteria strains associated with combatting diarrhea pathogens. By manipulating calf microbiomes through diet and strategic interbreeding, farmers may be able to reduce the incidence of loose stool with less reliance on costly antibiotics or other treatments.
A recent post-project evaluation of SARE projects awarded between 2016–2019 found that SARE’s unique support for graduate student research that helps farmers solve problems was key to the project’s success.
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