Have say on vac­cine for fa­tal OJD

Countryman - - LIVESTOCK -

Sheep pro­duc­ers are be­ing en­cour­aged to par­tic­i­pate in a new survey to help re­searchers in­ves­ti­gat­ing why the ef­fec­tive­ness of the Gu­dair vac­cine for Ovine Johne’s Dis­ease ap­pears to vary on dif­fer­ent prop­er­ties.

The one-page survey is be­ing launched this week as part of a project be­ing funded by Meat & Live­stock Aus­tralia and led by re­searchers at The Univer­sity of Syd­ney.

Gu­dair is Aus­tralia’s only vac­cine for the con­trol of the fa­tal, wast­ing dis­ease OJD.

MLA project man­ager — an­i­mal health, wel­fare & biose­cu­rity Dr Jo­hann Schroder said the survey was in­tended to in­ves­ti­gate vari­able re­sponses in flocks to the vac­cine on some prop­er­ties.

“One of the dis­cov­er­ies from MLA’s Johne’s Dis­ease re­search program was that de­spite reg­u­lar Gu­dair vac­ci­na­tion over many years, there are still sheep on some prop­er­ties that get in­fected and ill from OJD,” Dr Schroder said.

“Re­search con­ducted in the past 15 years has shown that vac­ci­na­tion with Gu­dair sub­stan­tially re­duces clin­i­cal dis­ease, mor­tal­i­ties, and the shed­ding of bac­te­ria in the fae­ces, but sheep in some flocks con­tinue to shed and suc­cumb to Johne’s Dis­ease.”

Pro­duc­ers can also par­tic­i­pate in the survey at https://www. sur­vey­mon­key.com/r/GGZSBJD.

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