The aim of this paper was to study the mineral contents of a predefined herbage according to its origin, and to compare them with reference values. The fresh herbage from the first seasonal harvest consisted of mixed a populations with, at least, 50% gramineae, without ryegrass dominance and their growth stage was at begin of heading of orchard grass. Various semi intensively managed sites were selected in western Switzerland and in Ticino and classified into four regions (Jura, Central Plateau, Northern Alps and Southern Alps) as well as into three altitude classes (<700, 700–1000, >1000 m a. s. l.). Concentrations of P, K and Se were comparable between regions and all mineral concentrations except Fe were similar between Jura and Central Plateau. Herbage from the Alps presented the highest Mg, S, Co and Zn concentrations and the herbage from the northern Alps was characterised by higher Ca and Cu and lower Zn concentrations than from the southern Alps. The class of altitude had less impact on mineral contents than the region. Only concentrations of Mg and Na increased with altitude, whilst those of K decreased in parallel. Whereas the mineral contents obtained on the Central Plateau and in Jura were compatible with the reference values, those in the Alps differed, mainly for Ca, Mg, S, Cu and Zn.
Which stakeholders in the dairy sector have an influence on the productive life of dairy cows? Research results from FiBL and Agroscope suggest that broad-based cooperation is needed to create structures for a longer productive life.
Agriculture is aiming to reduce greenhouse gas and ammonia emissions. Agroscope showed that for dairy cattle housing, feed composition plays a role in these emissions as well as wind and temperature.
Lazzari G., Münger A., Eggerschwiler L., Borda-Molina D., Seifert J., Camarinha-Silva A., Schrade S., Zähner M., Zeyer K., Kreuzer M., Dohme-Meier F.
Tannin-containing feedstuffs like Acacia mearnsii and sainfoin (Onobrychis viciifolia) have a measurable impact in reducing methane emissions from dairy cows. However, since these feedstuffs in some cases lead to productivity losses, careful consideration must be given to their use.