Farms.com Home   Ag Industry News

Bacteria-fed livestock could lead to less antibiotic use

Iowa State University is conducting research on the subject

By Diego Flammini
Assitant Editor, North American Content
Farms.com

Researchers at Iowa State University are trying to determine if feeding livestock the same bacteria found in some grocery store products can reduce the need for antibiotics in feed.

"There are alternatives to antibiotics in feed," Stephanie Hansen, professor at ISU said in an interview Monday with Iowa Public Radio. "And that's going to be a broad area of research here in the next 10 to 15 years."

As antibiotics are introduced into livestock’s diet and eventually the human diet, some bacteria can become resistant, spread and can leave doctors puzzled when trying to assess some patients.

Cattle eating

Researchers are testing different formulas and have zeroed in on Lactobacillus acidophilus, which is commonly found in dairy products and can help rid the body of harmful bacteria.

“Acidophilus would have the same impact in a production livestock animal as it would in humans,” Hansen said. “Maybe it’s able to outcompete a bad bacteria for attachment in the gastrointestinal tract in the intestine, so that would be a good thing.”

Essentially, if the bacteria can help keep the livestock healthy, there may be less of a need for antibiotics.

Diamond V, an Iowa-based manufacturer of animal nutrition products, said it has developed a pig feed supplement from Lactobacillus acidophilus and improvements in weight gain, feed conversion and overall health have been seen.


Trending Video

Environmental Effects on Sow Fertility - Dr. Isabela Bez

Video: Environmental Effects on Sow Fertility - Dr. Isabela Bez

In this special episode celebrating International Women's Day of The Swine it Podcast Show Canada, we bring Dr. Isabela Bez, a veterinarian and PhD student in Brazil, who explains how temperature and light regimes influence sow reproductive performance. She discusses seasonal infertility, climate adaptation, and why environmental monitoring inside barns is critical for herd efficiency. The episode highlights practical management strategies to reduce reproductive losses and improve outcomes. Listen now on all major platforms. "Environmental factors are actually very important on sow reproduction, and sometimes these are the factors that producers tend to not pay attention." Meet the guest: Dr. Isabela Bez / isabela-cristina-cola%c3%a7o-bez-1753381b0 is a veterinarian and PhD student in Animal Science at Pontifical Catholic University of Paraná (PUCPR), Brazil. Her work focuses on swine reproduction, nutrition, and animal welfare, with strong expertise in environmental effects on sow performance. She collaborates with international farms and research groups to improve reproductive efficiency through applied science.