Navigation Links
Dietary yeast extracts tested as alternative to antibiotics in poultry

This release is available in Spanish.

A dietary yeast extract could be an effective alternative to antibiotics for poultry producers, according to a U.S. Department of Agriculture (USDA) study.

Microbiologist Gerry Huff with USDA's Agricultural Research Service (ARS) in Fayetteville, Ark., and her colleagues have been studying the effects of yeast extract as an immune stimulant and alternative to antibiotics in conventional turkeys. Non-pharmaceutical remedies and preventatives are particularly needed for organic poultry production, according to Huff, who works in the ARS Poultry Production and Product Safety Research Unit (PPPSRU) in Fayetteville.

ARS is USDA's principal intramural scientific research agency, and this research supports the USDA goals of ensuring food safety and promoting international food security.

Initial studies suggest that dietary yeast extract has good potential as a non-antibiotic alternative for decreasing pathogens in organic turkey production. A larger study was needed to confirm its efficacy.

But it is expensive to work with turkeys because they eat more than other birds, according to Huff. So the researchers are testing yeast extract in Japanese quail to test the extract's efficacy against Salmonella and Campylobacter. The quail serve as a model system to evaluate natural treatments that will be beneficial for chicken and turkey production. Huff's current study, in collaboration with Irene Wesley at the ARS National Animal Disease Center in Ames, Iowa, involves 800 Japanese quail.

Yeast extracts help boost the immune system's ability to kill bacteria, but there is also a downside. According to Huff, yeast ramps up certain aspects of the immune response, but body weight may be decreased in some birds. That's because the energy normally used for growth is redirected toward the immune system. The researchers are looking for a balance between enhancing immune response and maintaining growth.

Organic poultry farms can only use compounds on the National List of allowed substances for organic production. Yeast extract is on that list.

Alternatives to antibiotics are also needed for conventional poultry production, since regulations for the usage of antibiotics are being tightened in response to the prevalence of antibiotic resistance in pathogens.


Contact: Sharon Durham
United States Department of Agriculture - Research, Education and Economics

Related biology news :

1. The dietary supplement genistein can undermine breast cancer treatment
2. Annual Bibliography of Significant Advances in Dietary Supplement Research 2007
3. Results of the third school nutrition dietary assessment study published
4. Desert woodrats switch one dietary poison for another
5. Desert woodrats switch one dietary poison for another
6. Following the dietary guidelines may slow heart disease in women
7. Two dietary oils, two sets of benefits for older women with diabetes
8. Dietary supplements manufacturers gain new tool to help ensure quality products
9. Even small dietary reductions in salt could mean fewer heart attacks, strokes and deaths
10. Researchers develop dietary formula that maintains youthful function into old age
11. Dietary factors influence ovarian cancer survival rates
Post Your Comments:
(Date:11/9/2015)... , Nov. 09, 2015 ... addition of the "Global Law Enforcement ... offering. --> ) has ... Law Enforcement Biometrics Market 2015-2019" report ... and Markets ( ) has announced ...
(Date:11/2/2015)... , Nov. 2, 2015  SRI International has ... to provide preclinical development services to the National Cancer ... SRI will provide scientific expertise, modern testing and support ... of preclinical pharmacology and toxicology studies to evaluate potential ... --> The PREVENT Cancer Drug Development Program is ...
(Date:10/29/2015)... RESTON, Va. , Oct. 29, 2015 ... announced today that it has released a new version ... Daon customers in North America ... gains. IdentityX v4.0 also includes a FIDO UAF ... customers are already preparing to activate FIDO features. These ...
Breaking Biology News(10 mins):
(Date:11/24/2015)... - Aeterna Zentaris Inc. (NASDAQ:  AEZS) (TSX: AEZ) (the "Company"), ... Toronto Stock Exchange, confirms that as of the date ... that would cause the recent movements in the Company,s ... About Aeterna Zentaris Inc. . ... Zentaris is a specialty biopharmaceutical company engaged in developing ...
(Date:11/24/2015)... , November 24, 2015 ... new market research report "Oligonucleotide Synthesis Market by Product ... (PCR, Gene Synthesis, Diagnostic, DNA, RNAi), End-User (Research, Pharmaceutical ... published by MarketsandMarkets, the market is expected to reach ... in 2015, at a CAGR of 10.1% during the ...
(Date:11/24/2015)... Muncie, IN (PRWEB) , ... November 24, 2015 , ... ... its newest Special Interest Group (SIG), MultiGP, also known as Multirotor Grand Prix, to ... in the last few years. Many AMA members have embraced this type of racing ...
(Date:11/24/2015)... 2015 --> ... released by Transparency Market Research, the global non-invasive prenatal ... of 17.5% during the period between 2014 and 2022. ... Industry Analysis, Size, Volume, Share, Growth, Trends and Forecast ... market to reach a valuation of US$2.38 bn by ...
Breaking Biology Technology: