In the years 2008 and 2010, the two maize varieties Amadeo and LG 32.52 were harvested in the milk ripeness, in the early and late dough stage and ensiled in 700 l containers. After opening the container, samples were taken to determine the fermentation quality and the aerobic stability with temperature measurements. With increasing development stage of the two varieties, the ash contents and fiber fractions in the silages decreased while the starch increased. The sugar content was relatively low in both varieties and in all three stages of development. In the maize silage, harvested in the milk stage, a more intensive lactic acid fermentation took place in both varieties than it did in the early and late dough stage. Furthermore, this is where the highest dry matter losses were observed. Regarding the aerobic stability, both varieties were very similar. Despite the same management conditions, big differences between the two years could be made out. The environmental conditions therefore have a greater impact on the aerobic stability than the choice of the variety.
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.