articles about ammonia in Abstracts

A high dietary fiber diet improves nitrogen utilization even if sows are fed a low crude protein diet.

The funnel slurry system can lower emissions of both ammonia, odour and methane.

Physical and ambient conditions affecting pen and pig cleanliness and air quality.

A new slurry system with U-shaped slurry trays with flushing or scraping can handle slurry with a high amount of straw and can reduce the emissions of ammonia and odour from pig houses.

Lowering dietary CP reduces N excretion while maintaining pig performance and carcass composition.

Feed practices have changed and concentrations of some elements may now be lower. Phosphorus concentration decreased up to 36%, concurrent with introduction of phytase. Most trace elements also decreased, but Zn doubled in nursery manure over 20 yr.

Dietary B. licheniformis and B. subtilis supplementation may reduce noxious gas emissions in growing pigs.

The effect of aerating pig slurry during 2 min every 6 h was tested. Aeration increased slurry pH by 0.7 units and NH3 emissions by 20%. CH4 emissions decreased by 40% and no significant N2O emission was detected.

Use of coated proteases in sorghum soybean based diets for growing pigs may improve nitrogen retention and reduce nitrogen content in manure.

This trial showed the advantage, in an environmental point of view, to use 15% drainage openings on the solid part of partly slatted floors in pens for group-housed gestating sows.

Deep-litter system composed of 60% sawdust and 40% rice husk was the most suitable with regard to reduction of environmental pollution.

Orange pulp and carob meal fibre could decrease NH3 y CH4 emissions from slurry.

Keeping group-housed gestating sows on partly straw bedded floor with permanent access to the concrete feeding stalls compared to fully straw bedded floor did not significantly influence animal performance and NH3-emissions, and decreased CO2eq-emissions.

Tannins from the quebracho tree can control the production of compounds that cause manure odors, according to studies by U.S. Department of Agriculture (USDA) scientists.

Daily multiphase feeding may be a useful tool to reduce nutrient excretion in manure in growing-finishing pigs.

The aim of this study was to determine the impact of a 33% reduction in straw used for bedding on ammonia, GHG and odour emissions.