The Rural Voice, 2003-01, Page 39Advice
Make your vaccination program work
Continued from page 34
dose of the primary series at all or gave
it within two days of delivering the
calves to the feedlot. Thus the calves
did not have a completed primary
series on board for protection when
they entered the feedlot and antibody
titres were low or non-existent.
The three herds with the healthiest
calves used the following vaccination
programs: one vaccinated the calves
with MLV vaccine with the same four
antigens seven and three weeks before
entry: the second used MLV with the
four antigens seven weeks before
entry; and the third used killed vaccine
given six and four weeks before entry.
Proper vaccination programs were
associated with protection from
disease. One measure of this protection
is antibody levels and, in this study,
antibody attributed to vaccination on
the cow -calf farm, affected disease
incidence and calf value in the feedlot.
Done correctly, killed vaccine and
MLV vaccine programs appear to
decrease disease.
Common failures of cow -calf
vaccination programs documented in
this study and in Ontario include:
• Failure to complete a primary series
of killed vaccine consisting of 2
vaccinations given 4 to 8 weeks apart:
• Failure to use the same antigens in
initial and subsequent vaccinations:
• Vaccinating calves with either killed
or live vaccines before maternal
antibody (antibody from colostrum) for
the particular antigen has expired. For
IBR this is around four months: for
BVD it is around six to eight months
after ingestion, and
• Vaccinating calves within one or two
days of entry into the feedlot.
Vaccinating baby calves on the cow
or vaccinating calves as they enter or
leave a truck for a sale or feedlot is
very convenient for the person but very
ineffective for the calf.0
Bruce landowners
offered help with
water, nutrient
projects
If you have a stream or wetland on
your property or have nutrient
management concerns a workshop in
Elmwood Januaryl6 can offer help.
The workshop at the Elmwood
Community Centre from 7:30-10:00
p.m. is an opportunity for landowners
to find out what options and resources
are available to help manage water and
nutrients on their propert.. They can
learn what other landowners have done
and where they received ad\ ice and
financial help. Landowners w ill have
an opportunity to meet with the finance
granting agencies.
The workshop is sponsored by the
Bruce Resource Stewardship Network.
Those who wish to attend can contact
Craig Todd at 519-371-8465.0
Please Note: In our last issue a Grey Bruce Farmers' Week ad incorrectly listed
Goat Day as January 12, 2003. The correct date for Goat Day is January 11th.
January 3rd - Crops Day and Ecological Evening
January 4th - Sheep Day
January 5th - Horse Day
January 6th — Dairy Day and Swine Evening
January 7th - Beef Day
Elmwood Community Centre, Elmwood Ontario
January 11th - Goat Day (at Grey County Agricultural Services in Markdale)
Crops, Dairy, Beef and Sheep Days — $20 registration (includes hot beef/lamb dinner)
Ecological Evening, Swine Evening, Horse Day & Goat Day - $ 10 registration ,+‘
An excellent line-up of speakers and trade show exhibits
For more information call 519-986-3756 or visit our website at www.greyagservices.c.i