Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Scientists Identify Bovine Gene Regulating Milk Production

20.02.2003


MTT Agrifood Research Finland and the University of Liège, Belgium, have worked together successfully in locating a gene that regulates total yield and protein and fat content of milk. The scientists found a variation in the growth hormone receptor gene in the bovine chromosome 20. The variation in the receptor gene is associated with a major effect on milk yield and composition in Ayrshire, Holstein and Jersey cows.



Dr Johanna Vilkki of MTT says that developing associated markers for genes that affect milk traits is not highly prioritised in breeding since it is relatively easy to improve these traits by conventional selection.

The value of the finding is scientific. This is the second time that a clear quantified association has been demonstrated between a single gene and bovine milk production. The MTT group is currently fine-mapping the genes that affect cows’ susceptibility to mastitis. This is of interest to cattle breeders, since traits sensitive to environmental effects, such as disease resistance, are difficult to improve by conventional methods, and for economic and welfare reasons the eradication of mastitis is an important goal for dairy cattle breeders.


Milk Genes Diagnosed From The Embryo

The present discovery will help breeders select bulls siring daughters with more economical milk production.

The ‘water’ version of the gene results in a 200 kg increase in annual production per cow, respectively decreasing the fat and protein content. The more cost-effective version of the gene will increase the average protein content in milk by 0.06 percentage units and the fat content by 0.15 percentage units, albeit at the expense of total milk yield. In 2002 the annual yield of the Finnish Ayrshire cow was 7,381 kg of milk with fat % of 4.36 and protein % of 3.36. According to Dr Vilkki, the vast majority of Finnish Ayrshire cattle are already carrying the more advantageous form of the gene.

The study, launched in 1999, was part of the EU biotechnology programme project EURIBDIS, in which altogether six European research groups cooperated. The sparse mapping of the entire genome of the Finnish Ayrshire, completed by MTT about two years ago, provided the basis for the present study.

MTT is a co-applicant in an international application for a patent for the use of the variation in the sequence of the growth hormone receptor gene in selection for milk-composition. There is only one comparable patent anywhere in the world, and that is also a result of work by the same international research group.

Simultaneously with the milk gene discovery, MTT’s researchers have developed a method allowing diagnosis of the gene variants from a bovine embryo biopsy. This allows the results to be immediately applied in the ASMO breeding programme, where selection is enhanced by extensive use of embryo transfer.

Johanna Vilkki | alfa

More articles from Agricultural and Forestry Science:

nachricht Alkaline soil, sensible sensor
03.08.2017 | American Society of Agronomy

nachricht 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

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: Fizzy soda water could be key to clean manufacture of flat wonder material: Graphene

Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.

As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

Nagoya physicists resolve long-standing mystery of structure-less transition

21.08.2017 | Materials Sciences

Chronic stress induces fatal organ dysfunctions via a new neural circuit

21.08.2017 | Health and Medicine

Scientists from the MSU studied new liquid-crystalline photochrom

21.08.2017 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>