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5. Economic Implications of Johne's Disease
Pages 99-103

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From page 99...
... For JD test-positive herds with 10 percent or more cull cows showing clinical signs, the economic impact was $227 per cow, and the majority of the loss was attributable to reduced milk production with additional losses from higher cow replacement costs and lower cull cow revenues (NAHMS, 1997a)
From page 100...
... Official JD tests detect the Map organism and must be completed by a laboratory approved by USDA/APHIS/VS/National Veterinary Services Laboratories. However, the rule changes refer only to animals with known test results and do not require JD testing of domesticated animals before interstate movement.
From page 101...
... with negative results during the 30 days prior to shipment. Current OIE recommendations provide only a limited protection against importation of Map-infected animals, because few affected animals show clinical signs, official reporting systems are not widely enacted or enforced, and no specific recommendations are provided for the choice of diagnostic tests or their interpretation.
From page 102...
... The implementation of a national control and assurance program that incorporates internal movement control empowers Australia to require similar assurances of JD status from its global trading partners. Similar import requirements that go beyond the OIE international standard could be implemented within the legal context of the SPS by other countries that have JD control and eradication programs in place.
From page 103...
... Furthermore, export opportunities will be lost unless larger populations of JD-free or low-risk animals can be certified by government agencies.


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