Abstract
Abstract. The aim of the study was to determine the dose of a nanotechnological-mineral preparation based on nanosilver and vermiculite for an effective ammonia reduction, and the influence of the preparation on physical properties of litter and air. The preparation used was obtained by spreading water nanosilver suspension on vermiculite with an addition of 5 % of humodetrynite. Research animals were broiler chickens divided into three groups. The particular groups were differentiated regarding the prepared application. The measurements of ammonia concentrations were conducted in upper litter layer and about 30 cm above the litter. Litter temperature, humidity and pH, and air humidity and temperature were monitored. The measurements were conducted at day 5, 10, 15, 20 and 25 of the experiment. Ammonia content above the litter was reduced in group I and II. The highest ammonia concentration was observed in the control group at sampling four while the lowest one was noted in group II at sampling two. In all groups an influence of the preparation on ammonia content above the litter was visible. Decrease in ammonia concentration in experimental groups compared to the control group was more distinct than in the case of ammonia concentration above the litter. Based on the results it is difficult to determine unequivocally an influence of the preparation on litter temperature, pH and humidity, and also on air temperature and humidity. Taking into account the level of ammonia reduction, the results may be a premise for further studies in the range of nanosilver application for the sanitization of animal buildings.
Highlights
Issues connected to the limitation of the emission of harmful substances of agricultural origin, including animal production, into the environment are still one of the most significant problems related to environment protection
No distinct influence of preparation based on vermiculite and water nanosilver suspension on presented rearing results was observed
There are numerous papers in the literature available concerning the problem of ammonia emission and physical parameters of litter and air in livestock buildings
Summary
Issues connected to the limitation of the emission of harmful substances of agricultural origin, including animal production, into the environment are still one of the most significant problems related to environment protection. Increasing number of complaints from people exposed to emissions of odours from animal production is observed. Odours, including ammonia which is one of the most harmful and concurrently most common odorants, have a significant influence on the life of people inhabiting areas in the vicinity of animal production farms, since these compounds may cause nausea, stress, irritation or allergy (Hayes et al 2006, Mills 1995, Nimmermark 2004, Schiffman & Williams 2005, Witkowska et al 2006). An unprofitable influence of odours of agricultural origin on human health may be caused by cognitive and emotional factors (Radon et al 2004)
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