Phillip R. Myer

The nutritional status of beef cattle and other ruminants reflects a complex interplay of diet, management, host genetics, and the symbiotic microbiota of the gastrointestinal tract. Host genetics can shape microbial diversity, influencing feed efficiency, while feed type and intake affect microbial activity and nutrient supply. Together, these factors determine animal performance and have broad implications for livestock production, resource use, and resilience. Dr. Myer’s research explores 1) the microbial and molecular drivers of feed efficiency, enteric emissions, and nutrition in grazing beef cattle, and 2) rumen microbiome development and its role in growth. This work links gastrointestinal microbial communities with diet, management, and host genetics.