Navigation Links
Researchers study selenium's effects on horses
Date:8/14/2013

For a new study in the Journal of Animal Science, researchers evaluated how different levels of selenium affect the immune system of adult horses. According to the researchers, the effects of selenium supplementation on the immune system have been evaluated in other species but not extensively in horses.

Dr. Laurie Lawrence, animal science professor at the University of Kentucky, said the amount of selenium in soil and forages varies across the United States. She said that they wanted to know whether horses grazing pasture that was marginal in selenium would react differently to vaccines, compared with horses that were supplemented with additional dietary selenium.

Mieke Brummer, PhD student working with the University of Kentucky and Alltech, said she was interested in the effects of selenium on the immune system, specifically the cell-mediated component of the immune system. The cell-mediated component is responsible for the activation of immune cells. These immune cells can directly attack foreign antigens.

In this experiment, twenty-eight adult horses were divided by age and sex. The horses were then randomly assigned to a dietary selenium treatment. Brummer said the first phase lasted 35-weeks. During the first phase, the researchers were aiming to deplete the selenium in the horses that were assigned to the low diet.

In the next 29-weeks, some the horses that were assigned to low treatments were given additional dietary selenium supplements. Brummer said the horses were either given organic or inorganic selenium supplements. During the last 7 weeks, the horses were given vaccinations. The researchers collected blood samples to evaluate immune response during this time.

Brummer said that the evaluation of vaccination response was not effective. She said other measures of cell-mediated immunity suggested that cell-mediated immune function was suppressed in the horses with low selenium consumption. She said antibody production was unaffected.

"It is important for horse owners to read feed labels so they can avoid both over-supplementation and under-supplementation of all classes of horses," Lawrence said.

Lawrence said the horses were not performing strenuous exercises in this study. She said the results could have been different if the horses were under performance stress. She said additional research would need to be conducted to study the interaction between selenium, antioxidant and immune response in exercising horses.

Brummer said this study was funded by the Alltech-University of Kentucky Nutrigenomics Alliance.


'/>"/>

Contact: Madeline McCurry-Schmidt
madelinems@asas.org
217-898-4777
American Society of Animal Science
Source:Eurekalert

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. UC Santa Barbara researchers discover genetic link between visual pathways of hydras and humans
3. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
4. UNH researchers find African farmers need better climate change data to improve farming practices
5. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
6. Researchers uncover molecular pathway through which common yeast becomes fungal pathogen
7. Researchers print live cells with a standard inkjet printer
8. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
9. Researchers reveal how a single gene mutation leads to uncontrolled obesity
10. Researchers discover novel therapy for Crohns disease
11. New paper by Notre Dame researchers describes method for cleaning up nuclear waste
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/16/2017)... March 16, 2017 CeBIT 2017 - Against identity fraud with DERMALOG ... ... Used combined in one project, multi-biometric solutions provide a crucial contribution ... Used combined in one ... ...
(Date:3/9/2017)... FRANCISCO and MOUNTAIN VIEW, Calif. ... , "Eating Well Made Simple," and 23andMe , ... help guide better food choices.  Zipongo can now provide ... their food preferences, health goals and biometrics, but also ... certain food choices. Zipongo,s personalized food decision ...
(Date:3/6/2017)... SAN MATEO, Calif. , March 6, 2017 ... predictive marketing and sales technology, today announced Predictive ... (AI) solution for infusing actionable sales intelligence into ... customers to automatically enable their sales organizations with ... contextual messages that allow for intelligent engagement. Predictive ...
Breaking Biology News(10 mins):
(Date:4/26/2017)... ... April 25, 2017 , ... LABS, Inc. (LABS) announced in December 2016 ... extensive test menu: Nucleic Acid Testing (NAT) for ZIKV; and Enzyme Immunoassays (EIAs) specific ... offer NAT screening for blood donors under an Investigational New Drug (IND) study protocol. ...
(Date:4/25/2017)... ... , ... As part of the Stago EdVantage Virtual University Virtual ... in order to illuminate this clinical problem for people unfamiliar with the topic. , ... a high degree of morbidity and mortality. DIC is a confusing disorder from both ...
(Date:4/25/2017)... (PRWEB) , ... April 25, 2017 , ... ... Services and Metrology Partners.     , Covalent’s Analytical Services unit provides high-quality ... can be measured within 24 hours of receipt. There are no price premiums, ...
(Date:4/21/2017)... ... April 21, 2017 , ... Having worked on the ... Formaspace is pleased to introduce it to top lab design architects from around the ... Turk and VP of Industrial Design and Engineering Greg Casey will be at the ...
Breaking Biology Technology: