Agroscope Liebefeld-Posieux, the Swiss Federal Research Station for Animal Production and Dairy Products (ALP), analyses animal feeds for their content of genetically modified organisms (GMO). Since the introduction in 1999 of the declaration limits for GMO (3 % for raw materials and 2 % for mixed feeds), more than 1600 samples were drawn by the official feed inspection. The results of the analyses are pleasant, because few mixed feeds or raw materials have been contested due to their GMO content. The detection techniques have also evolved these last years. Today they are more rapid and accurate, and now a quantification of the transgenic elements is carried out routinely.
Pontiggia A., Münger A., Ammer S., Philipona C., Bruckmaier R. M., Keil N.M., Dohme-Meier F.
Even in temperate climate zones, an increase in the ambient temperature and solar radiation can cause heat stress in grazing dairy cows. Agroscope studied the physiological changes in cows caused by increasing heat load.
Lazzari G., Münger A., Heimo D., Seifert S., Camarinha-Silva A., Borda-Molina D., Zähner M., Schrade S., Kreuzer M., Dohme-Meier F.
In dairy cows, herbage-based diets often lead to increased nitrogen excretion. Tanniferous sainfoin and extract of acacia can reduce nitrogen excretion from urine and thus ammonia volatilization from slurry.
Excessive nitrogen inputs from the air lead to over-fertilisation of sensitive ecosystems. Continuous feeding optimisation can make an important contribution to reducing ammonia losses and thus nitrogen inputs.