Research carried out in the Netherlands has revealed that the genetic background of cattle apparently determines how quickly and effectively they acquire immunity to infections from gastrointestinal worms. Such infections cause considerable economic losses in the beef farming industry. During her doctoral research, Kirezi Kanobana investigated how cattle rid themselves of worms and prevent new infections.
Kanobana used an infection model in which, based on their genetic background, animals exhibited varying degrees of resistance to gastrointestinal worms. Broadly speaking there are three groups of animals. Two percent of the animals are naturally immune to a first infection. Another group reacts to the first infection with an effective immune response. In the event of a second infection these animals are protected. A third group is highly sensitive for infection and scarcely acquires any immunity even after repeated infections.
The researcher distinguished the three groups of animals by using two types of measurement. Three-month-old calves were infected with 100,000 larvae of a small-intestinal worm. After the infection an initial distinction was made on the basis of parasitological variables such as worm counts and the detection of eggs in the animals’ excreta. Secondly, immunological parameters were used to confirm the three groups of animals.
Sonja Jacobs | alfa
New 3-D model predicts best planting practices for farmers
26.06.2017 | Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign
Fighting a destructive crop disease with mathematics
21.06.2017 | University of Cambridge
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....
A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...
Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision
Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...
21.07.2017 | Event News
19.07.2017 | Event News
12.07.2017 | Event News
21.07.2017 | Earth Sciences
21.07.2017 | Power and Electrical Engineering
21.07.2017 | Physics and Astronomy