USDA-ARS, Animal Waste Management Research Unit, 230 Bennett Lane, Bowling Green, KY 42104, USA.
J Environ Manage. 2011 Jul;92(7):1760-6. doi: 10.1016/j.jenvman.2011.02.005. Epub 2011 Mar 2.
Poultry litter is a valuable nutrient source for crop production. Successful management to reduce ammonia and its harmful side-effects on poultry and the environment can be aided by the use of litter amendments. In this study, three acidifiers, two biological treatments, one chemical urease inhibitor and two adsorber amendments were added to poultry litter. Chemical, physical and microbiological properties of the litters were assessed at the beginning and the end of the experiment. Application of litter amendments consistently reduced organic N loss (0-15%) as compared to unamended litter (20%). Acidifiers reduced nitrogen loss through both chemical and microbiological processes. Adsorbent amendments (water treatment residuals and chitosan) reduced nitrogen loss and concentrations of ammonia-producing bacteria and fungi. The use of efficient, cost-effective litter amendments to maximum agronomic, environmental and financial benefits is essential for the future of sustainable poultry production.
家禽粪便垫料是作物生产的一种有价值的营养来源。通过使用垫料改良剂，可以成功地管理减少氨及其对家禽和环境的有害副作用。在这项研究中，向家禽粪便垫料中添加了三种酸化剂、两种生物处理剂、一种化学脲酶抑制剂和两种吸附剂改良剂。在实验开始和结束时，评估了垫料的化学、物理和微生物特性。与未改良的垫料（20%）相比，垫料改良剂的应用一致减少了有机氮损失（0-15%）。酸化剂通过化学和微生物过程减少了氮的损失。吸附剂改良剂（水处理残渣和壳聚糖）减少了氮的损失以及产生氨的细菌和真菌的浓度。为了可持续家禽生产的未来，必须有效地使用高效、具有成本效益的垫料改良剂，以最大限度地提高农业、环境和经济效益。
