Application of straw as bedding increases welfare of pigs, but requires a slurry system that can handle slurry with a straw content. A new slurry system has been developed for slurry with straw content, where U-shaped slurry trays were scraped mechanically or flushed. The aim of the present study was to investigate the effect of the slurry system on the emission of ammonia and odorants in pig houses for growing-finishing pigs (30–110 kg). Experimental pig houses with two pens of 15 pigs each and with flooring that was 2/3 slatted and 1/3 solid were used. Ammonia was measured during the whole production period (76 days), and odorants were measured over nine days in the middle of the period. The results showed that during the first 2/3 of the production period, the ammonia emission from the pig houses with U-shaped slurry trays with scraping or flushing was ca. 50% lower than that from the control pig houses. During the last 1/3 of the production period, the effect on ammonia emission was less. The overall effect of U-shaped slurry trays with scraping or flushing was ammonia reduction of ca. 35–40%. The odour emission (as odour activity values based on threshold values for individual odorants) from pig houses with U-shaped trays with scraping or flushing was ca. 40% lower than that for the control pig houses. In conclusion, U-shaped slurry trays with flushing or scraping can handle slurry with a high amount of straw and their use can reduce the emissions of ammonia and odour from pig houses.

中文翻译：

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秸秆还田猪舍低排放泥浆坑

使用秸秆作为垫料可以提高猪的福利，但需要一种可以处理含有秸秆的泥浆的泥浆系统。一种新的泥浆系统已开发用于含有秸秆的泥浆，其中 U 形泥浆托盘被机械刮擦或冲洗。本研究的目的是研究泥浆系统对生长育肥猪（30-110 公斤）猪舍中氨和气味排放物的影响。实验猪舍有两个猪圈，每个猪圈 15 头，地板为 2/3 板条和 1/3 实心。在整个生产期间（76 天）测量氨气，在中间的 9 天内测量气味。结果表明，在生产的前 2/3 期间，带有 U 形泥浆盘并带有刮擦或冲洗功能的猪舍的氨排放量约为。比对照猪舍低50%。在生产的最后 1/3 期间，对氨排放的影响较小。带有刮擦或冲洗的 U 形浆料托盘的总体效果是氨减少约 35–40%。带有 U 形托盘、刮擦或冲洗的猪舍的气味排放（作为基于单个气味剂阈值的气味活性值）约为 比对照猪舍低40%。综上所述，采用冲刷或刮刷的U形泥浆盘可以处理大量秸秆的泥浆，使用它们可以减少猪舍氨气和异味的排放。对氨排放的影响较小。带有刮擦或冲洗的 U 形浆料托盘的总体效果是氨减少约 35–40%。带有 U 形托盘、刮擦或冲洗的猪舍的气味排放（作为基于单个气味剂阈值的气味活性值）约为 比对照猪舍低40%。综上所述，采用冲刷或刮刷的U形泥浆盘可以处理大量秸秆的泥浆，使用它们可以减少猪舍氨气和异味的排放。对氨排放的影响较小。带有刮擦或冲洗的 U 形浆料托盘的总体效果是氨减少约 35–40%。带有 U 形托盘、刮擦或冲洗的猪舍的气味排放（作为基于单个气味剂阈值的气味活性值）约为 比对照猪舍低40%。综上所述，采用冲刷或刮刷的U形泥浆盘可以处理大量秸秆的泥浆，使用它们可以减少猪舍氨气和异味的排放。比对照猪舍低40%。综上所述，采用冲刷或刮刷的U形泥浆盘可以处理大量秸秆的泥浆，使用它们可以减少猪舍氨气和异味的排放。比对照猪舍低40%。综上所述，采用冲刷或刮刷的U形泥浆盘可以处理大量秸秆的泥浆，使用它们可以减少猪舍氨气和异味的排放。