Institute of Technology and Life Sciences, Branch in Warsaw, Warsaw, Poland.
Institute of Wood Sciences and Furniture, Warsaw University of Life Sciences, Warsaw, Poland.
Environ Monit Assess. 2021 May 17;193(6):341. doi: 10.1007/s10661-021-09118-7.
The aim of the study was to present the scale of greenhouse gas emissions from animal production, and to provide test results from different housing systems. In three free stall buildings, two with slurry in deep channels and one with cattle in cubicles staying on shallow litter concentration of ammonia and carbon dioxide were measured in summer season by using dedicated equipment from Industrial Scientific Research. Air exchange was calculated on the base of balance carbon dioxide method. This method was used in order to estimate the air flow rate. Concentrations of ammonia and CO were measured as the base for air exchange and ammonia emission rates. Ammonia emissions were product of ammonia concentration and air exchange rate. Temperature and relative humidity were measured to establish microclimate conditions in buildings tested to show the overall microclimatic situation in buildings. Differences between ammonia emission rates were observed in both housing systems. The highest ammonia emission rate was equal to 2.75 g·h·LU in well-ventilated cattle barn with the largest herd size.
本研究旨在展示动物生产过程中的温室气体排放规模，并提供来自不同饲养系统的测试结果。在三个自由卧床畜舍中，两个畜舍的深沟中有粪浆，一个畜舍的牛只待在浅垫料上的牛栏中，在夏季使用来自工业科学研究的专用设备测量了氨气和二氧化碳的浓度。空气交换量是基于二氧化碳平衡法计算的。该方法用于估计气流速率。氨气和 CO 的浓度是空气交换率和氨气排放率的基础。氨气排放量是氨气浓度与空气交换率的乘积。测量了温度和相对湿度，以建立测试建筑物的微气候条件，以展示建筑物的整体微气候情况。在两种饲养系统中都观察到了氨气排放率的差异。通风良好的畜舍中氨气排放率最高，每头动物每小时 2.75 克。该畜舍的畜群规模最大。
