Summary of bvd decision making-dairy

G p 1 /2R e pe a t te st

B le ed you n g s to ck F irs t lac ta tio n sc re en

S e ro -veR e pe a t te st

H e rd te st

S e ro + ve

G p 3 /4

B T M te stA n tib o dy

(R T -P C R )

BVDV detected

Ear notch testing- bottom up approach?

Summary of bvd decision making-beef

G p 1 /2R e pe a t te st

B le ed you n g s to ck

S e ro -veR e pe a t te st

H e rd te st

S e ro + ve

G p 3 /4

B T M te stA n tib o dy

(R T -P C R )

BVDV detected

Short cut- determine individual calf status for virus, exclude dams of non-PI calvesAccurate recording of parentage critical!

JD-Herd level investigation

Herd level investigation- jd positive

NB if transmission routes effectively closed may be 4-5 years before prevalence starts to drop

Herd level investigation-JD positive

NB if transmission routes effectively closed may be 4-5 years before prevalence starts to drop

Herd investigation-JD negative