The Swiss Agency for the Environment, Forests and Landscape (SAEFL) commissioned the Swiss Federal Research Station for Agricultural Economics and Engineering (FAT) in Tänikon to revise the FAT report no. 476 on minimal distances of animal housing systems (Richner, Schmidlin, 1995). In general, the existing guideline proved to be useful for closed houses with forced ventilation. Municipalities and cantonal environmental agencies consider it to be a good working tool and apply it consistently. However, the guideline does not sufficiently take into account open housing systems and houses with an exercise yard, particularly in pig keeping. Therefore, housing systems which present a certain potential for odour nuisance are examined and assessed, with special emphasis on topographic influences on odour diffusion. As opposed to systems with forced ventilation, the new housing systems present diffuse odour sources near the ground. People living near pig houses with an exercise yard mainly complain about odour nuisances when cold air flows off. Complaints are more often made in summer, when people spend more time outside or leave the windows open at night. In autumn 2001, measurements were carried out near pig houses at two different sites. The local meteorological parameters (temperature, wind speed and wind direction) presented significant differences in situations with and without cold air flowing off.
Herholz C., Siegwart J., Bruckmaier R.M., Rytz E., Lamon I., Muhr M. und Stirnimann R.
In both sport and alternative agriculture, horses are once again being used as draught animals. Efficient power transmission plays an important role in the wellbeing of draught horses.
A study by Vetsuisse shows that the outdoor veal calf concept reduces antibiotic consumption in calf fattening by 80%. AGRIDEA has examined the economic viability of outdoor veal calf production and concludes that it cannot compete with conventional veal calf fattening.
In contrast to pigs, dairy cattle are as yet rarely fed protein-reduced diets. Studies show that there is also potential for protein savings in cattle, and thus for reducing ammonia emissions.