The aim of this study was to examine the excrement load in outdoor ranges due to the outdoor run use of free-range laying hens (organic farming system) to quantify the accumulation of nutrients in the soil. The number of hens using the run (flock of 4,500 hens) were recorded (digital photographs; scan sampling interval 10 min, 5 hours/d, 23 d; 7 to 10/2003) and sward protection grids, positioned at different distances (2 , 6, 17 m) from the barn were used to get the amount of excreta (number and weight of droppings).udOn average 9.8 % of the hens used the range out of which 69 % preferred the area close to the barn (0-17 m). Excretion rates per hen amounted to 12,4 g*hour, thus accounting for a share of 5 % of the total excrements of the flock. The calculated amount of nitrogen in the soil reached a very high level in the area close to the barn, but with regard to the entire outdoor area only usual fertilisation level. Preventive measures to protect the soil close to the barn are recommended.ud
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机译：这项研究的目的是检查由于户外活动使用自由放养的母鸡（有机耕作系统）来量化土壤中养分的积累而在室外产生的排泄物负荷。记录使用运行的母鸡数量（每组4,500头母鸡）（数码照片；扫描采样间隔10分钟，5小时/天，23天； 7至10/2003）和位于不同距离的草皮防护网（2 ，从谷仓中取出6、17 m）来获取粪便的排泄量（粪便的数量和重量）。 ud平均，有9.8％的母鸡使用了该范围，其中有69％的母鸡更喜欢靠近谷仓的区域（0 -17 m）。每只母鸡的排泄量为12.4克*小时，因此占羊群总排泄量的5％。在靠近谷仓的区域中，土壤中的氮的计算量达到了很高的水平，但是对于整个室外区域，只有常规的施肥水平。建议采取预防措施保护靠近谷仓的土壤。 ud
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