C. Protocols

14. Removing Offspring from Test POSITIVE Ewes (pdf)
a.
Weaned lambs < 180 days of age and born from and/or raised by POSITIVE ewes (natural or recipient or foster dams),
i.
It is strongly recommended to market these animals immediately so as to reduce risk of MVV infection to NEGATIVE flock.
ii.
However, they may be marketed at a date greater than within 30 days of the test date in order to assure proper finish and access to optimal market opportunities.
iii.
If this delayed marketing option is selected,
(1)
The lambs must be managed separately from the breeding flock, and
(2)
Must be marketed at < 180 days of age.
b.
Nursing lambs < 180 days of age born from and/or nursing POSITIVE ewes.
i.
POSITIVE ewes with nursing lambs, may be held in isolation until the lambs are old enough to be weaned
ii.
Once the lambs are weaned
(1)
The POSITIVE ewes must be removed.
(2)
The weaned lambs can then be kept until market age as outlined in Section C.14.a.