By National Research Council, Division on Earth and Life Studies, Board on Environmental Studies and Toxicology, Board on Agriculture and Natural Resources, Committee on Animal Nutrition, Ad Hoc Committee on Air Emissions from Animal Feeding Operations
Air Emissions from Animal Feeding Operations: present wisdom, destiny wishes discusses the necessity for the U.S. Environmental safeguard organisation to enforce a brand new approach for estimating the volume of ammonia, nitrous oxide, methane, and different pollution emitted from cattle and fowl farms, and for choosing how those emissions are dispersed within the surroundings. The committee demands the EPA and the U.S. division of Agriculture to set up a joint council to coordinate and oversee brief - and long term learn to estimate emissions from animal feeding operations correctly and to improve mitigation recommendations. Their suggestion used to be for the joint council to concentration its efforts first on these pollution that pose the best hazard to the surroundings and public future health.
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Extra resources for Air Emissions from Animal Feeding Operations Current Knowledge, Future Needs
A systems approach, which integrates animal and crop production systems both on and off (imported feeds and exported manure) the AFO, is necessary to evaluate air emissions from the total animal production system. , water quality) and economic considerations to optimize public benefits. Nitrogen Emissions Because of its potential environmental impacts at regional, national, and global scales, instituting control strategies for nitrogen emissions should be assigned high priority. Sufficient information is currently available to do this at all geographic scales.
The process-based modeling approach can be used to estimate the flows of elements (nitrogen, sulfur, carbon) and of compounds containing these elements. The committee believes, with some reservations, that this approach might be used for estimating odor emissions. The only substance of direct concern to the committee for which this approach may not be well suited is particulate matter. This approach involves the specification of mathematical models that describe the movement of various substances of interest at each major stage of the process of producing livestock products: movement into the next stage, movement in various forms to the environment, and ultimately movement into products used by humans.
0 pound (lb) live broiler as a 1957 genetic strain chicken fed a diet used in 1957. Since modern broilers are grown to heavier weights, the actual efficiency gains are altered. 9 lbs in six weeks requires about 27 percent of the time and 42 percent of the feed per pound of live bird that the 1957 strain required. 0-pound bird. These productivity gains are consistent with those cited by Martinez (2002, Table 3). Note that reduced feed consumption per pound of product results in a proportionally larger reduction in the quantity of excreta on a dry weight basis.
Air Emissions from Animal Feeding Operations Current Knowledge, Future Needs by National Research Council, Division on Earth and Life Studies, Board on Environmental Studies and Toxicology, Board on Agriculture and Natural Resources, Committee on Animal Nutrition, Ad Hoc Committee on Air Emissions from Animal Feeding Operations