However, pig semen must be diluted and stored liquid, and the storage capacity is only a few days. The window of opportunity for insemination is also limited. Striking the period when the sow is receptive is difficult and farmers need to inspect the animals regularly.
“The timeframe from when a sperm dose for pigs is extracted until it must be utilised is five days,” says reproduction research scientist Ann Helen Gaustad at Norsvin. “Extending this by one to two days would be extremely significant.”
The two organisations contacted SINTEF in 2003 and with the assistance of funding from the Research Council of Norway a research project was commenced. Research scientists wanted to influence sperm cells to become capable of fertilising over a longer period. In 2008, the status is that the research scientists have developed a technique that moulds the sperm cells into an alginate gel. The cells can then be stored until the gel is inseminated into the animal.
“We have been trying to confirm a hypothesis that restricted tail movements of sperm cells, as is the case when they are in the animal’s testicles, provides longer lasting qualities,” says Geir Klinkenberg at SINTEF. “We achieve the restrictions by using the gel and the results to date are good. By achieving longer storage ability, it prolongs the lifespan of the sperm population in the uterus.”High values
“This is production on an industrial scale where the sperm can be utilised on a large number of animals, and where each sperm and each piglet represents high values,” says Klinkenberg.
The next step will take place in the spring with insemination trials on larger animals. Around 1000 animals will be inseminated using the new method to see if better results are achieved than with today’s conventional methods.
“This is a completely new and revolutionary approach where the focus has been on controlling the processes that occur both before and after the insemination,” says Geno Research & Development Manager Elisabeth Kommisrud.
Aase Dragland | alfa
Forest Management Yields Higher Productivity through Biodiversity
14.10.2016 | Technische Universität München
Farming with forests
23.09.2016 | University of Illinois College of Agricultural, Consumer and Environmental Sciences (ACES)
Physicists from the University of Würzburg have designed a light source that emits photon pairs. Two-photon sources are particularly well suited for tap-proof data encryption. The experiment's key ingredients: a semiconductor crystal and some sticky tape.
So-called monolayers are at the heart of the research activities. These "super materials" (as the prestigious science magazine "Nature" puts it) have been...
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
28.10.2016 | Power and Electrical Engineering
28.10.2016 | Physics and Astronomy
28.10.2016 | Life Sciences