Clemson Finds Natural Way To Raise Chickens Without Antibiotics

Clemson University researchers are advancing poultry farming by studying natural alternatives to antibiotics, aiming to meet rising consumer demand for antibiotic-free chicken while keeping flocks healthy. The poultry industry contributes $2.5 billion to South Carolina’s economy, but diseases like necrotic enteritis (NE) remain costly. Traditionally treated with antibiotics, NE may now be managed using natural products such as black cumin, kefir, and bacteriophages.

Doctoral researcher Vishal Manjunatha found that black cumin oil protects chickens’ intestines, kefir strengthens immunity and gut bacteria, and bacteriophages target harmful microbes. Combining black cumin with bacteriophages showed the best results in preventing NE deaths. This research supports a growing shift in consumer behavior, with a USDA study showing increased spending on antibiotic-free poultry. Supported by Clemson’s ACRE program, the study offers practical steps for antibiotic-free farming, beneficial for both large-scale producers and backyard flocks. Researchers emphasize that science-backed natural feed additives can help farmers meet consumer expectations responsibly.