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BVD
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BVD Myths & Frequently
Asked Questions
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Myth
# 1: A
PI calf will be thin, have a rough haircoat, and be a
poor-doer.
Fact: While many PI's
are unthrifty, reports have indicated that up to 50% will
appear normal and may enter the stocker operation in excellent
condition. PI calves cannot be visually identified.
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Myth
# 2:
Calves are PI because their dam is PI.
Fact: Recent
research has shown that 7% of PI calves' dams were PI; the
other 93% of calves have dams with a normal immune response to
BVDV and are not persistently infected.
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Myth
# 3:
The greatest cost associated with a PI calf is the death of
the calf.
Fact: The reproductive
loss associated with lower pregnancy proportions, more
abortions, and higher calf mortality is the greatest economic
cost of exposure to PI animals.
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Myth
# 4:
BVD won't affect my cattle because I vaccinate.
Fact: The tremendous
amount of virus secreted by a PI calf can overwhelm a level of
immunity that is protective under less severe exposure.
Vaccination alone will not solve BVD problems.
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