Put your deworming program in writing
Wednesday, March 14, 2012
Posted by: Dairy Calf & Heifer Association
to you by the Dairy Calf & Heifer Association and the beef checkoff-funded Beef Quality Assurance program
Control of internal and external parasites is important for
optimal growth, disease prevention and well-being of dairy replacements.
According to the Gold Standards III,
having parasite-control protocols in place helps keep parasite populations from
being a detriment to animal health, performance and well-being. They also can
help prevent development of parasite resistance.
Eugene Myatt, 2011-2012 Dairy Calf & Heifer Association
president, uses manure sampling to verify worm counts or infestations in the
heifers that he raises with his two sons Adam and Justin. They raise heifers
from four months of age until two months prior to calving.
During this time, heifers are dewormed about five times
according to the farm’s written protocol.
"We have gone to a rotation using drenches and then
injectables so that we don’t develop any resistance,” Myatt says.
To control flies, they use a feed-through insecticide to
control fly larvae in the manure. They start feeding this before flies emerge
in the spring. They also use fly tags, beginning in early June.
"The larger cattle all have access to headlocks, so it’s
very easy to use some pour-on fly control on those cattle,” Myatt adds.
Guidelines in the Gold Standards III
recommend that you develop a parasite-control protocol in consultation with
your herd veterinarian and pest-management specialists. Pest-control strategies
to include in your protocol will depend on your geographic location, climate
and time of year.
Also be careful to avoid the use of products that
are not labeled for parasite control in dairy heifers. Using products
"off-label” may cause injury to livestock and people, as well as parasite resistance
development and meat residue issues. This ‘Gold Standard’ advice is supported
by the best management practices outlined in section IV-A of the Dairy Animal Care &
Quality Assurance Certification manual.
For more information
on integrated pest management strategies for heifers, please see section IX in