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Feeding microbials to chickens leads to mysterious immune response
Date:9/12/2012

ifference between the two treatments in any of the response criteria.

But Koci believes there may have been something going on behind the scenes. He theorizes that the interaction between direct fed microbial species and intestinal cells results in a change in the energy consumption in the small intestine. This leads to an increase in the amount of energy available to the immune system. The results of the present experiment are the first to indicate that direct fed microbials leads to increased energy expenditures by the immune system.

Through some unknown mechanism, broilers fed the microbial diet may have a faster, not better, response in their immune system. The DFMD was not promoting growth, but under disease stress, the bird would be able to get back to optimal growth in fewer days than birds not fed microbials.

Koci cautioned that individual producers may see different results from microbial use in the diet depending on the production system. He also said that not all body tissues were studied, so there could be energy directed toward other tissues that were not accounted for.

In the future, the researchers are looking to study which mechanism or microbial is directly responsible for immune responses.

"We hope to look at the physiological effects and trace them back to the signaling pathway," said Koci.


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Contact: Madeline McCurry-Schmidt
madelinems@asas.org
217-689-2435
American Society of Animal Science
Source:Eurekalert

Page: 1 2

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