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ARS Home » Midwest Area » Lexington, Kentucky » Forage-animal Production Research » Research » Publications at this Location » Publication #293065
Title: Antimicrobial effects of hops (Humulus lupulus) beta-acid on the growth and ammonia production of caprine ruminal hyper-ammonia-producing bacteria

Author
item Flythe, Michael
item Klotz, James
item Gellin, Gloria
item Aiken, Glen

Submitted to: American Society for Microbiology General Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 3/21/2013
Publication Date: 5/20/2013
Citation: Flythe, M.D., Klotz, J.L., Gellin, G.L., Aiken, G.E. 2013. Antimicrobial effects of hops (Humulus lupulus) beta-acid on the growth and ammonia production of caprine ruminal hyper-ammonia-producing bacteria. American Society for Microbiology General Meeting. Pg. 22.

Interpretive Summary:

Technical Abstract: Goats and other ruminants require the symbiotic microbes that live in the rumen to digest fiberous plant tissues. However, some rumen microbes impede animal health and performance. The hyper-ammonia-producing bacteria (HAB) catabolize nutitionally important amino acids, and produce ammonia (NH3). Much of the NH3 is converted to urea and lost. The well-studied HAB in the bovine rumen can be inhibited with antibiotics or botanical antimicrobials, like hops beta-acid (i.e. lupulone). Less is known about HAB from goats. Our goal was to determine if beta-acid could inhibit caprine HAB and NH3 production from uncultivated goat rumen microbes.