Different methods have been employed to detect falsified maize gluten products. Microscopic observations -numerous starch grains, seed envelopes and wheat bran fragments- clearly showed the presence of atypical maize gluten particles in samples with otherwise normal crude protein levels (≥ 60%) and the usual gold-yellow color. Chemical analyses in a few samples confirmed the presence of urea (19 to 173 g/kg), melamine (up to 20 g/kg) and cyanuric acid (up to 10 g/kg) coping for the low levels of methionine (up to 13 g/kg) in incriminated products (genuine maize gluten methionine level ≥ 16 g/kg). Furthermore, a fast technique – an electronic nose based on mass spectrometry detection- also proved to be reliable for the identification of falsified maize gluten products: 100% correct classification of model and unknown samples was achieved with principal component analysis. As a consequence of these results, the Swiss feed-inspection authority blocked the import, or restricted the use, of 2500 tons of falsified products.
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.