Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

The inside scoop on semen

09.03.2007
Research at the Norwegian School of Veterinary Science enables more reliable evaluation of semen quality and greater storage potential.

Some 90% of all births of cattle and pigs in Norway result from artificial insemination with frozen, or fresh and stored semen. Highly fertile semen fetches a very high price, and improved methods of evaluation of semen quality are therefore desirable for the Norwegian breeding and husbandry organisations Geno (cattle) and Norsvin (pigs).

For her Ph. D. degree, Karin Waterhouse evaluated semen quality in bulls and boars using a newly-developed method called flow cytometry. The introduction of this technology now means that Norwegian pig breeders can store semen at room temperature for up to five days prior to insemination. Previously, the recommended maximum storage time for boar semen was three days. This breakthrough has led to more effective transportation and distribution of boar semen. Less is wasted and production of semen on Sundays is not longer necessary.

The fertility of Norwegian Red (NRF) breeding bulls is very good in comparison to other cattle breeds in Europe and the USA. This good fertility makes it difficult to find a relationship between semen quality and fertility. Waterhouse has succeeded in finding a relationship between sperm DNA quality and fertilising potential of bull semen, meaning that in the future, sperm DNA quality can be used as a basis to reject semen doses and exclude bulls with inferior fertilising potential. The work that Waterhouse has carried out will help maintain the high fertility of NRF breeding bulls and means that farmers can continue to achieve a high level of pregnancy in their cows after artificial insemination.

Both Geno and Norsvin are ISO-certified semen production units, and the use of flow cytometry for evaluation of semen quality will allow for improved documentation of the semen quality of Norwegian breeding boars and bulls. Geno and Norsvin have recently increased their export of semen, and the improved documentation will be a valuable factor in competition with other international breeding and semen companies.

Hege Robberstad | alfa
Further information:
http://www.veths.no/templates/Page.aspx?id=8797

More articles from Agricultural and Forestry Science:

nachricht Energy crop production on conservation lands may not boost greenhouse gases
13.03.2017 | Penn State

nachricht How nature creates forest diversity
07.03.2017 | International Institute for Applied Systems Analysis (IIASA)

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Giant Magnetic Fields in the Universe

Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.

The results will be published on March 22 in the journal „Astronomy & Astrophysics“.

Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...

Im Focus: Tracing down linear ubiquitination

Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.

Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...

Im Focus: Perovskite edges can be tuned for optoelectronic performance

Layered 2D material improves efficiency for solar cells and LEDs

In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...

Im Focus: Polymer-coated silicon nanosheets as alternative to graphene: A perfect team for nanoelectronics

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.

Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...

Im Focus: Researchers Imitate Molecular Crowding in Cells

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.

Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International Land Use Symposium ILUS 2017: Call for Abstracts and Registration open

20.03.2017 | Event News

CONNECT 2017: International congress on connective tissue

14.03.2017 | Event News

ICTM Conference: Turbine Construction between Big Data and Additive Manufacturing

07.03.2017 | Event News

 
Latest News

Argon is not the 'dope' for metallic hydrogen

24.03.2017 | Materials Sciences

Astronomers find unexpected, dust-obscured star formation in distant galaxy

24.03.2017 | Physics and Astronomy

Gravitational wave kicks monster black hole out of galactic core

24.03.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>