Gaseous emissions from poultry litter causes production problems for producers as well as the environment, by contributing to climate change and reducing air quality. Novel methods of reducing ammonia (NH₃) and greenhouse gas (GHG) emissions in poultry facilities are needed. As such, our research evaluated GHG emissions over a 42 d period. Three separate flocks of 1000 broilers were used for this study. The first flock was used only to produce litter needed for the experiment. The second and third flocks were allocated to 20 pens in a randomized block design with four replicated of five treatments. The management practices studied included an unamended control; a conventional practice of incorporating aluminum sulfate (referred to as alum) at 98 kg/100 m²); a novel litter amendment made from alum mud, bauxite, and sulfuric acid (alum mud litter amendment, AMLA) applied at different rates (49 and 98 kg/100 m²) and methods (surface applied or incorporated). Nitrous oxide emissions were low for all treatments in flocks 2 and 3 (0.40 and 0.37 mg m² hr⁻¹, respectively). The formation of caked litter (due to excessive moisture) during day 35 and 42 caused high variability in CH₄ and CO₂ emissions. Alum mud litter amendment and alum did not significantly affect GHGs emissions from litter, regardless of the amendment rate or application method. In fact, litter amendments such as alum and AMLA typically lower GHG emissions from poultry facilities by reducing ventilation requirements to maintain air quality in cooler months due to lower NH₃ levels, resulting in less propane use and concomitant reductions in CO₂ emissions.

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新型家禽凋落物温室气体排放修正案的评估

家禽垫料产生的气体排放会导致气候变化并降低空气质量，从而给生产者和环境造成生产问题。需要减少家禽设施中的氨（NH ₃）和温室气体（GHG）排放的新方法。因此，我们的研究评估了42天的温室气体排放量。该研究使用了三个成群的1000只肉鸡。第一批鸡只用于生产实验所需的垫料。第二组和第三组以随机区组设计分配给20只钢笔，其中五个处理重复四次。研究的管理实践包括未修改的控制；在98 kg / 100 m ²下结合硫酸铝（称为明矾）的常规做法）; 一种由明矾泥，铝土矿和硫酸制成的新型垃圾改良剂（铝泥垃圾改良剂，AMLA），以不同的比例（49和98 kg / 100 m ²）和方法（表面施用或掺入）施用。所有处理组2和3中的一氧化二氮排放量均较低（分别为0.40和0.37 mg m ² hr ^-1）。在第35天和第42天形成的垫料垃圾（由于过多的水分）导致CH ₄和CO _2的高度变化排放。明矾泥垫料的修改和明矾都没有显着影响垫料产生的温室气体排放，无论修改率或施用方法如何。实际上，诸如铝矾土和AMLA之类的垃圾改良剂通常会通过降低通风要求来降低禽类设施的温室气体排放量，从而在较凉的月份保持较低的NH ₃水平，从而降低空气质量，从而减少丙烷的使用并随之减少CO ₂排放。