C. Protocols

Protocols for Biosecurity and Animal Movement (pdf)
8. Biosecurity Requirements: In order to minimize the risk of spread or reintroduction of MVV infection to the flock, the following biosecurity precautions must be followed or are strongly recommended as indicated: (Appendix 8.)
 

a.

Surgical and treatment equipment, (e.g. syringes, dose guns, shearing equipment) that may become contaminated with blood or saliva must not be shared between animals unless all “A” status, without first being disinfected.

Disinfection of equipment can be done with sodium hypochlorite (6% bleach) by mixing 1 part bleach to 2 parts water for a final solution of 2% sodium hypochlorite OR sodium hydroxide by mixing 80 grams of sodium hydroxide crystals with 1 litre of water to make a 2 molar solution.   These agents are effective against most viruses, bacteria and the scrapie agent.  Both can be used for disinfection of surgical equipment, docking and tattoo equipment, multi-dose syringes and work surfaces.  Minimum contact time should be 10 seconds with the product being rinsed or wiped off after disinfecting.  Chlorhexadine solution or soap is effective for disinfecting shearing blades.

 
b.
Single-Use needles
 
i.
Are strongly recommended for use in flocks with test positive animals.
 
c.
All personnel working with the flock or visiting the flock premises
 
i.
Must wear clean clothing that has not been in contact with any sheep or goats not of “A” status (including those in isolation).
 
ii.
All protective footwear must be cleaned and disinfected prior to entering the flock premise (e.g. by vigorous scrubbing with a disinfectant soap (e.g. tamed iodine or creosote based soap) and fresh water).
 
iii.
Hands must be washed with a disinfectant soap prior to handling sheep.
 
d.
Sheep leaving and returning to the flock where there may be contact with unknown or lower status sheep (e.g. from shows, demonstrations, sales barns or shared pastures),
 
i.
If from “A” status flocks, they must
 
(1)
Be housed in isolation and
 
(2)
Have two negative MV tests between 8 and 12 weeks apart prior to returning to the flock
 
ii.
It is strongly recommended that if from Status Monitored - Low Risk,“B”, Enrolled-Negative, or Enrolled that upon return that they
 
(1)
Are housed in isolation and
 
(2)
Have two negative MV tests between 8 and 12 weeks apart prior to returning to the flock.
 
iii.
On the next scheduled flock test those animals must be included in the flock test.  If an “A” status test, they must be tested in addition to the random sample.
9. Transportation of sheep:
 
a.
Livestock handlers must wear clean coveralls and boots.
 
b.
All livestock carriers must be cleaned and disinfected before sheep are loaded.
 
c.
Sheep from Status “A” flocks must be transported so that:
 
i.
There is no contact with sheep of unknown or lower status.
 
ii.
They are not unloaded at any other livestock facility with sheep of unknown or lower status en route to the new location.
 
d.
It is strongly recommended that all movement of sheep from Status Monitored - Low Risk, Status “B”, or Enrolled be done so that:
 
i.
There is no opportunity for contact with other sheep of unknown or lower status.
 
ii.
They are not unloaded at any other livestock facility with sheep of unknown or lower status en route to the new location.
10. Sheep entering flocks enrolled in the OMVFSP
 
a.
All sheep entering a flock enrolled in the OMVFSP must be accompanied by an OMVFSP Transfer form (Appendix 7).
 
b.
Only sheep from Status “A” flocks can directly enter a flock enrolled in the OMVFSP without testing and an isolation period.
 
c.
Sheep from any other flock other than “A” status must have two negative tests 8 to 12 weeks apart while in an Isolation Facility prior to entering an OMVFSP flock.
     

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