Early research results at Virginia Tech's College of Agriculture
and Life Sciences indicate that pasture-fed beef has less
fat and higher conjugated linoleic acid (CLA), indicating
that it may be a healthier choice. CLA is a combination
of different types of fatty acids.. Animals change the chemical
structure of these acids that are found in plants, in their
digestive system. Studies are continuing on the value of
CLA in human health.
Research into pasture- vs. grain-fed beef is in preliminary
stages. The goal is to develop innovative concepts and practices
to enhance the efficiency, profitability, and sustainability
of grassland-based beef production systems in the Appalachian
Region, said Joseph P. Fontenot, the emeritus John W. Hancock
Jr. Professor of animal science at Virginia Tech. The project,
which includes eight Virginia Tech faculty members among
25 scientists, is in its fourth year of a 10-year study.
It is partially supported by the U.S. Department of Agriculture
Research Service along with funding from the universities
involved, West Virginia University, the University of Georgia,
and Virginia Tech.
This project is the first to include a health aspect, Fontenot
said. "Virginia Tech is a participant in this study
because it hopes the findings will benefit not only consumers,
but also cattle producers so that they can provide a better
and more efficiently raised animal for the market,"
he said.
Each of the project's phases takes place at a specific
organization. Virginia Tech is responsible for the spring
calving, weaning, and backgrounding stages of the animals.
The cattle are then transported to West Virginia University
where the steers are held for the stocker stage. Heifers
are used for heifer development work. Steers move onto either
a pasture-finishing or a feedlot situation at Virginia Tech's
Shenandoah Valley Agriculture Research and Extension Center
at Steeles Tavern. The animals are sent to slaughter in
the fall and their meat is evaluated at the University of
Georgia.
The meat evaluation stage takes one rib from each steer
and tests it for cooking qualities, taste, and fat and bone
content. The meat is analyzed for minerals, vitamins, and
fatty acids, especially those that are beneficial to human
health such as conjugated linoleic acid. The results have
been positive in all fields. Specific findings indicate
that there is no taste difference between pasture finished
and grain fed steers.