AHI Newsletter Q2 2018 FINAL

Programme Update BVD

AnimalHealthIreland.ie BVDFree

Dr Maria Guelbenzu, Programme Manager

Results By the end of Q2 of 2018 just over 1.92 million calves had been tested, representing approximately 82% of the anticipated calf crop for the year. The prevalence of PI births in 2018 continues to decline, with only 0.05% of calves tested to the end of Q2 being found to be persistently infected (PI) with BVDV (as compared to 0.10% in 2017, Figure 1), with these being located in 0.9% of 83,000 breeding herds (compared to 2.01% in 2017, Figure 2). This represents a decrease in PI prevalence of 50% from that seen in 2017, from 0.10% to 0.05%, and is a reduction of more than twelve-fold when compared to the prevalence at the start of the compulsory phase of the programme in 2013, when 0.66% of the calves born were PI. Updated programme results are available on a weekly basis online click here .

0.66

% PI ANIMALS

0.46

0.33

0.16

Figure 1. Animal- level prevalence of PI calves born during each year of the programme (YTD; year to date)

2017 2018 0.10 0.05

2013

2014

2015

2016

(YTD)

11.3

% PI HERDS

7.6

5.9

3.2

Figure 2. Prevalence of herds with PI calves born during each year of the programme (YTD; year to date)

2.0 0.9

2013

2014

2015

2016

2017

2018 (YTD)

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AHI STAKEHOLDER NEWSLETTER | SUMMER EDITION

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