How Phage Therapy Is Transforming Livestock Health

Across the globe, livestock producers are being asked to do more with less: raise healthier animals, reduce antibiotic use, and meet growing demand for meat and dairy from an expanding, urbanised population.

This balancing act has led the agricultural sector to explore new technologies that improve animal health sustainably. One of the most promising of these innovations is bacteriophage therapy, a science that is both old and new—rooted in nature but revitalised by modern biotechnology.

Bacteriophages, or “phages” for short, are naturally occurring viruses that infect and destroy specific bacteria. They exist everywhere bacteria do, from soil to water to the gut microbiome. Unlike antibiotics, which act broadly and can disrupt beneficial bacteria, phages are highly targeted, leaving the rest of the microbial community untouched. This precision makes them an ideal tool for modern livestock management, especially in feedlot and intensive farming systems where bacterial infections can spread quickly.

For livestock producers, phage therapy offers clear advantages. It can help prevent and manage bacterial diseases such as Bovine Respiratory Disease in cattle, E. coli infections in pigs, and Salmonella in poultry, all without the drawbacks of antibiotic residues or resistance buildup. By supporting the animal’s natural microbiome, phages also promote better feed efficiency and weight gain, improving overall productivity.

As consumer and export markets increasingly value antibiotic stewardship and transparent production, phage therapy positions producers ahead of the curve. What once seemed like futuristic science is now a practical pathway to sustainable, high-performance farming—one where nature and innovation work hand in hand.