NM-1407 Land Application of Manure and Environmental Concerns [2009]
نویسنده
چکیده
منابع مشابه
Feasibility and costs of phosphorus application limits on 39 U.S. swine operations.
Concerns about manure P and water quality have prompted new regulations imposing P limits on land application of manure. Previous research established that P limits increase land needs for animal feeding operations. We evaluated the effect of N, annual P, and rotation P limits on the feasibility of manure management. A mechanistic model characterized manure management practices on 39 swine oper...
متن کاملFate and transport of antibiotic residues and antibiotic resistance genes following land application of manure waste.
Antibiotics are used in animal livestock production for therapeutic treatment of disease and at subtherapeutic levels for growth promotion and improvement of feed efficiency. It is estimated that approximately 75% of antibiotics are not absorbed by animals and are excreted in waste. Antibiotic resistance selection occurs among gastrointestinal bacteria, which are also excreted in manure and sto...
متن کاملSurvey of Salmonella populations from swine waste- treatment technologies
Swine manure is generally used as fertilizer and applied to fields for growing agricultural commodities. Salmonella and other pathogens have frequently been isolated from swine wastes.1-3 Land application of Salmonella-contaminated manure may pose an environmental risk if movement occurs to surface and groundwaters.4-6 Sustainable swine production requires the development of innovative and cost...
متن کاملReconciling the new demands for food protection with environmental needs in the management of livestock wastes.
Government policy in many countries has been to promote manure management methods to reduce the negative impacts related to water and air pollution. The central strategy of encouraging manure as a fertiliser rather than treating it as a waste, is under threat from new concerns on public health and especially food quality. Restrictions on manure applications to certain food crops and the stipula...
متن کاملDairy diet phosphorus and rainfall timing effects on runoff phosphorus from land-applied manure.
Surface-applied dairy manure can increase P concentrations in runoff, which may contribute to eutrophication of lakes and streams. The amount of dietary P fed to dairy cows (Bos taurus) and the timing of a rain event after manure application may further affect runoff P losses. The objective of this study was to examine dietary P supplementation effects on manure and runoff P concentrations from...
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