Featured Research

from universities, journals, and other organizations

Purdue's Low-Cost Hog Feed Lowers Manure Pollutants, Odors

Date:
March 15, 2000
Source:
Purdue University
Summary:
Purdue University researchers have developed a cost-effective, nutritional diet for pigs that produces manure with less troublesome nitrogen and less odor than typical pig excrement, addressing two problems that threaten the survival of the pork industry in Indiana and throughout the United States.

Purdue University researchers have developed a cost-effective, nutritional diet for pigs that produces manure with less troublesome nitrogen and less odor than typical pig excrement, addressing two problems that threaten the survival of the pork industry in Indiana and throughout the United States.

Nitrogen and phosphorus in pig manure have been associated with ground water and surface water contamination, and the increasingly close proximity of neighborhoods to hog farms has brought a rise in public complaints about odors from confined-feeding hog facilities.

Purdue animal scientists Alan Sutton and Brian Richert worked with Purdue agricultural engineer Al Heber and others to develop the new diet.

"By reducing the crude protein of a standard hog diet and supplementing with synthetic amino acids and 5 percent cellulose, we were able to cut nitrogen excretion nearly in half," Sutton says. "The exact reduction of nitrogen in the manure was 48 percent."

By lowering crude protein to 10 percent and supplementing with synthetic amino acids alone, nitrogen in the manure was reduced by 33 percent, compared to excrement produced by hogs on a standard 13 percent crude protein diet. Ammonia emission -- another key odor-causer in manure -- also was reduced by 33 percent with this diet.

Adding 10 percent soybean hulls to such a diet resulted in a 40 percent ammonia reduction, and another odor-causing agent, hydrogen sulfide, was reduced by 26 percent. Total odors were diminished by 30 percent compared to that from pigs fed a standard diet.

In addition, the low-protein, soy-hull diet cost $3.86 less per ton than the standard diet.

Pigs had less backfat when fed the reduced-protein, soy-hull diet, but average daily weight gains dropped a little.

Richert and Sutton say a variety of management practices can reduce the chance of polluting the environment with excess nitrogen. They advise producers to carefully limit amounts of dietary protein by feeding high-quality, low-protein, amino-acid-supplemented diets to reduce nitrogen in manure.

The article about these dietary recommendations, "Nutritional Strategies for Reducing Manure DM, N, and P Concentrations," is written by Richert and Sutton.


Story Source:

The above story is based on materials provided by Purdue University. Note: Materials may be edited for content and length.


Cite This Page:

Purdue University. "Purdue's Low-Cost Hog Feed Lowers Manure Pollutants, Odors." ScienceDaily. ScienceDaily, 15 March 2000. <www.sciencedaily.com/releases/2000/03/000315075657.htm>.
Purdue University. (2000, March 15). Purdue's Low-Cost Hog Feed Lowers Manure Pollutants, Odors. ScienceDaily. Retrieved September 17, 2014 from www.sciencedaily.com/releases/2000/03/000315075657.htm
Purdue University. "Purdue's Low-Cost Hog Feed Lowers Manure Pollutants, Odors." ScienceDaily. www.sciencedaily.com/releases/2000/03/000315075657.htm (accessed September 17, 2014).

Share This



More Plants & Animals News

Wednesday, September 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Some Tobacco Farmers Thrive Amid Challenges

Some Tobacco Farmers Thrive Amid Challenges

AP (Sep. 16, 2014) The South's tobacco country is surviving, and even thriving in some cases, as demand overseas keeps growers in the fields of one of America's oldest cash crops. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

AFP (Sep. 16, 2014) Scientists say a female colossal squid weighing an estimated 350 kilograms (770 lbs) and thought to be only the second intact specimen ever found was carrying eggs when discovered in the Antarctic. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com
Raw: Scientists Examine Colossal Squid

Raw: Scientists Examine Colossal Squid

AP (Sep. 16, 2014) Squid experts in New Zealand thawed and examined an unusual catch on Tuesday: a colossal squid. It was captured in Antarctica's remote Ross Sea in December last year and has been frozen for eight months. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Ivorians Abandon Monkey Pets in Fear Over Ebola Virus

Ivorians Abandon Monkey Pets in Fear Over Ebola Virus

AFP (Sep. 16, 2014) Since the arrival of Ebola in Ivory Coast, Ivorians have been abandoning their pets, particularly monkeys, in the fear that they may transmit the virus. Duration: 00:47 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