The use of digital applications holds potential for optimizing work processes across departments. The "LANDNETZ" experimental field is one of 14 nationwide funded experimental fields dedicated to the topic of communication infrastructure and the testing of marketable technologies in agricultural practice. In addition to already established systems for the management of dairy cows, an increasing range of sensors and possibilities for digital data acquisition could be identified, especially for calf husbandry. The practical testing of a selection of market-available solutions at the Saxon State Office for the Environment, Agriculture and Geology showed that these technologies are fundamentally suitable for supporting the processes of feeding and health monitoring of calves. However, consistent digitalization and networking of entire processes fails due to a lack of compatibility between products from different manufacturers, the detached consideration of individual parameters and the question of how purposeful decisions for everyday work can be derived from the data obtained.
During a piglet rearing period of 35 days, the influence of the protein source (animal or vegetable protein) on biological performance, health and animal behavior was examined with a total of 592 piglets (78% docked, 22% undocked piglets) in 4 consecutive trails. Compared to the control, the use of poultry meal led to better feed acceptance and an increased growth rate of the piglets. In fish and poultry meal test groups, fewer piglets suffering from diarrhea were observed compared to control groups feeded with plant based feeds. Animal behavior was also positively influenced by feeding animal protein, analogous to intestinal health. The animals in the test groups showed significantly more resting and normal behavior than to the control animals. At the same time, fewer tail necrosis were observed, especially in undocked piglets. By feeding animal-based protein feeds, the general occurrence of tail injuries could not be avoided, but serious tail injuries (category 3, 4) could be prevented. The use of high-quality animal protein sources can be regarded as a building block on the way to avoid tail docking of piglets.
In den Bundesländern Brandenburg, Sachsen, Sachsen-Anhalt und Thüringen wird seit mehreren Jahren eine Zunahme von herbizidresistenten Unkrautbiotypen festgestellt. Zur Überwachung der Entwicklung von Herbizidresistenz entnimmt der Pflanzenschutzdienst jährlich Samenproben von Alopecurus myosuroides, bei denen eine Minderwirkung nach der Herbizidanwendung beobachtet wurde. Regional wurden auch resistente Populationen von Apera spica-venti, Lolium spp., Echinochloa crus-galli, Bromus sterilis sowie Amaranthus retroflexus, Matricaria spp., Papaver rhoeas und Stellaria media nachgewiesen. In dem Beitrag werden die gegenwärtige Resistenzsituation bei A. myosuroides in o.g. Bundesländern vorgestellt sowie die Ursachen der Zunahme der Resistenzen erörtert. Biotests zeigten bereits, dass bei der Bekämpfung von A. myosuroides Wirkstoffe der HRAC-Gruppen 1 und 2 deutlich an Wirksamkeit verloren haben. Durch molekularbiologische Analysen konnten Mutationen nachgewiesen werden, die die Bindung zwischen den Herbiziden und den Zielproteinen ALS oder ACCase behindern.
