Navigation Links
Improving survival of pig sperm
Date:4/24/2013

URBANA Although U.S. cattle genetics are exported all over the world in the form of frozen semen, the same is not true for pigs because boar semen does not freeze well. In an attempt to improve semen storage and pig reproduction, animal scientists at the University of Illinois are looking at how sperm survives in the sow oviduct.

"Many mammals and birds will store sperm for some period of time," said associate professor of animal sciences David Miller. "Pigs will store sperm for 24 to 48 hours." Sperm must be stored in species in which mating and ovulation are poorly synchronized.

Miller and his team wanted to understand the adhesion system that retains the sperm. Previous research indicated that sugars in the oviduct were an important part of the process, but it was not clear which ones.

They screened hundreds of sugars, using an array on a microscope slide to which they added fluorescently labeled boar semen. When the semen bound to a sugar, fluorescence was visible on the slide. They identified two sugars: sialylated lactosamine and Lewis X.

The next step is to identify the receptor on the sperm.

"We'd like to know exactly which molecules the sugars bind," Miller said. "Then maybe we could develop a laboratory test for those molecules. If sperm have a lot of them, then maybe it would be possible to inseminate only once rather than two or three times, as is typical when inseminating sows."

He also noted that a better understanding of the storage process might also help them to determine what goes wrong when sperm are less fertile. If the problem is linked to the storage process, it might be possible to develop therapies to correct it.

Another question to explore is how the sugars lengthen sperm life span. If this could be determined, it might be possible to extend the time that semen can be stored, making it easier to ship it to other places. "If we can improve storage and transportation, we can affect pig genetics worldwide, not just within our region," he said.


'/>"/>

Contact: Susan Jongeneel
sjongene@illinois.edu
217-333-3291
University of Illinois College of Agricultural, Consumer and Environmental Sciences
Source:Eurekalert

Related biology news :

1. Genetic research develops tools for studying diseases, improving regenerative treatment
2. Interventional radiology: Mitigating symptoms, improving quality of life of MS patients
3. Improving equine health: Research studies vaccinations to protect newborn foals
4. Global Surgical Devices Market Growth Driven by Improving Standards of Living and Longer Life Expectancies, Research Shows
5. Validity CTO to Present Natural ID Solutions for Improving Mobile Risk Management and User Experience at NFC Solutions Summit 2012
6. Waste to watts: Improving microbial fuel cells
7. Improving water quality can help save coral reefs
8. GOCEs second mission improving gravity map
9. U of Minn. receives $1.8 million grant for improving efficiencies in fuel and plastics production
10. Improving the development of new cancer models using an advanced biomedical imaging method
11. Improving DNA amplification from problematic plants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/3/2017)... , Jan. 3, 2017 Onitor, provider ... introduction of Onitor Track, an innovative biometric data-driven program ... showcasing this month at the 2017 Consumer Electronics Show ... In the U.S., the World Health Organization ... than two-thirds of adults who are overweight or obese. ...
(Date:12/20/2016)... N.C. and GENEVA, Dec, 20, 2016 /PRNewswire/ ... biometric data sensor technology, and STMicroelectronics ... the spectrum of electronics applications, announced today the ... development kit for biometric wearables that includes ST,s ... with Valencell,s Benchmark™ biometric sensor system. ...
(Date:12/16/2016)... -- The global wearable medical device market, in terms of value, ... 5.31 billion in 2016, at a CAGR of 18.0% during the ... ... medical devices, launch of a growing number of smartphone-based healthcare apps ... providers, and increasing focus on physical fitness. Furthermore, ...
Breaking Biology News(10 mins):
(Date:1/12/2017)... ... 2017 , ... Each year, Crain’s Detroit Business News ranks the most innovative ... patent estate of a company, its impact and significance, and the likelihood of bringing ... in technologies that transform energy sources such as low dose X-ray and convert them ...
(Date:1/12/2017)... Colo (PRWEB) , ... January 12, 2017 , ... ... then to targeted treatments, 26-year-old Lisa Rosendahl’s doctors gave her only a few ... describes a new drug combination that has stabilized Rosendahl’s disease and increased both ...
(Date:1/12/2017)... PORTLAND, Oregon and Pune, India , January 12, 2017 ... In vitro Toxicity Testing Market by Type and End Users - Global Opportunity Analysis ... reach $7,813 million by 2022 from $2,921 million in 2015, growing at a CAGR ... ... Allied Market Research Logo ...
(Date:1/11/2017)... ... January 11, 2017 , ... Phase ... show early promise of the investigational anti-cancer agent tucatinib (formerly ONT-380) against HER2+ ... treatment regimens. Twenty-seven percent of these heavily pretreated patients saw clinical benefit from ...
Breaking Biology Technology: