OPP update

There is a new strategy out there that no longer relies on orphaning lambs. It is now thought that ewes don’t transfer the virus through milk or colostrum. The new approach is to maintain the ewe lambs separate from the ewe flock, tested prior to 12 months of age, they are permanently segregated and retested annually to confirm continuing test-negative status. This creates a base for a negative flock. These ewes never enter flock. The original flock is culled.

The significance I find in this that is the Midwest many production systems producers routinely maintain their ewe lambs as a separate unit. Unknowingly they have reduced test positive sheep.

In the end what difference does it make, the disease has no economic significance.



About Ask-a-Vet Sheep

Veterinary services, procedures, biologicals, and drugs mentioned in this publication represent the personal opinions and clinical observations of the contributing author. They are in no way intended to be interpreted as recommendations without the consent of the producer’s own practicing Veterinarian. We strongly urge that producers establish a patient-client-veterinarian relationship that allows extra-label use when there are no drugs approved for treatment or if approved drugs are not effective. This procedure allows veterinarians to go beyond label directions when “prudent use” is necessary. The limited availability of drugs and biologics in this country is a major factor in restricting the growth of the sheep industry and allowing producers to compete in the world market place.
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