Featured Research

from universities, journals, and other organizations

Minimal Composting Of Beef Cattle Manure Greatly Reduces Antibiotic Levels

Date:
October 14, 2008
Source:
USDA/Agricultural Research Service
Summary:
Composting beef cattle manure, even with minimal management, can significantly reduce the concentrations of antibiotics in the manure. Scientists found that composting manure from beef cattle could reduce concentrations of antibiotics by more than 99 percent.

ARS scientists have found composting beef manure can significantly reduce antibiotics and pathogens.
Credit: Photo courtesy of Natural Resources Conservation Service

Composting beef cattle manure, even with minimal management, can significantly reduce the concentrations of antibiotics in the manure, according to an Agricultural Research Service (ARS) pilot study. The scientists found that composting manure from beef cattle could reduce concentrations of antibiotics by more than 99 percent.

Osman Arikan, a visiting scientist from Istanbul Technical University, and ARS microbiologists Patricia Millner and Walter Mulbry at the Henry A. Wallace Beltsville Agricultural Research Center, in Beltsville, Md., looked at varying levels of manure management, including plain manure piles, and manure piles with straw added. They found that adding straw to manure piles tends to result in higher temperatures that speed up the process of degrading antibiotics as well as pathogens.

The use of antibiotics as therapeutic agents is widespread in the animal production industry. Scientific studies have shown that, depending on the antibiotic and type of animal, between 20 to 75 percent of antibiotics administered to animals is excreted via urine and feces. So it's important that these residues are broken down during composting to prevent their release into the environment.

Arikan, Millner, and Mulbry evaluated the efficacy of a series of minimal-management options for on-farm manure composting to reduce concentrations of the antibiotics oxytetracycline and chlorotetracycline. The treatments were designed to span a range of management options from simply piling up the manure to mixing it with an equal volume of straw (to increase aeration within the compost pile) and adding insulating layers of straw.

Results show that manure-only pile temperatures and the concentrations of antibiotics were significantly influenced by treatment over a 28-day period. Concentrations of oxytetracycline and chlorotetracycline incubated at ambient temperature decreased 75 percent and 90 percent, respectively.

Oxytetracycline and chlorotetracycline concentrations in samples incubated for 28 days within an amended manure pile decreased 91 percent and 99 percent, respectively. Although manure piles amended with straw attained higher temperatures and more rapid decreases in antibiotic concentrations, there is currently no compelling justification for producers to expend additional resources needed to achieve the more rapid rates of antibiotic removal. Pathogen reduction in manure piles requires careful and consistent management to ensure all parts of the pile are treated.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Minimal Composting Of Beef Cattle Manure Greatly Reduces Antibiotic Levels." ScienceDaily. ScienceDaily, 14 October 2008. <www.sciencedaily.com/releases/2008/10/081013200632.htm>.
USDA/Agricultural Research Service. (2008, October 14). Minimal Composting Of Beef Cattle Manure Greatly Reduces Antibiotic Levels. ScienceDaily. Retrieved July 29, 2014 from www.sciencedaily.com/releases/2008/10/081013200632.htm
USDA/Agricultural Research Service. "Minimal Composting Of Beef Cattle Manure Greatly Reduces Antibiotic Levels." ScienceDaily. www.sciencedaily.com/releases/2008/10/081013200632.htm (accessed July 29, 2014).

Share This




More Plants & Animals News

Tuesday, July 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Rodents Rampant in Gardens Around Louvre

Rodents Rampant in Gardens Around Louvre

AP (July 29, 2014) Food scraps and other items left on the grounds by picnickers brings unwelcome visitors to the grounds of the world famous and popular Louvre Museum in Paris. (July 29) Video provided by AP
Powered by NewsLook.com
Jane Goodall Warns Great Apes Face Extinction

Jane Goodall Warns Great Apes Face Extinction

AFP (July 29, 2014) The world's great apes face extinction within decades, renowned chimpanzee expert Jane Goodall warned Tuesday in a call to arms to ensure man's closest relatives are not wiped out. Duration: 00:58 Video provided by AFP
Powered by NewsLook.com
How Your Face Can Leave A Good Or Bad First Impression

How Your Face Can Leave A Good Or Bad First Impression

Newsy (July 29, 2014) Researchers have found certain facial features can make us seem more attractive or trustworthy. Video provided by Newsy
Powered by NewsLook.com
Rat Infestation at Paris' Tuileries Garden

Rat Infestation at Paris' Tuileries Garden

AFP (July 29, 2014) An infestation of rats is causing concern among tourists at Paris' most famous park -- the Tuileries garden next to the Louvre Museum. Duration: 00:54 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins