AHI Newsletter Q2 2018 FINAL

Programme update BVD

Enhancements to the programme introduced over the last couple of years have had a significant impact in the prevalence of the disease and the retention of PI calves. At the end of Q2 2018, there were only 113 PIs born during the year still alive. This corresponds to a reduction of 20% when compared to the 141 PIs alive at the same point last year. Only 20 herds were actually retaining PIs detected in 2018 at the end of Q2 (no registered date of death within 5 weeks of the date of initial test), compared to 27 herds at the same point in 2017. While this clearly demonstrates good progress, it is critical that the incidence of retention is reduced to zero. Negative herd status (NHS) The status of almost all animals in the 83,000 breeding herds in Ireland is now known, including a decreasing number of animals born before the start of the compulsory programme in 2013 that have neither been tested nor produced a calf. At the end of Q2 the number of these animals was approximately 9,500. The majority of these animals are in beef herds, and the majority are also male or have not have a calf registered to them. These animals are not required to be tested under the legislation and may currently be sold untested. It is important that these animals are tested in the coming months. In addition, there are some 31,000 animals born since January 2013 that do not have a valid test result and are therefore not compliant with the requirements of the legislation. The majority of these have never been tested, while a small number have had an initial empty result and not been retested. Around three quarters of these animals are 2018-born, with smaller numbers from preceding years. DAFMwill be writing to these non-compliant herds over the coming weeks, while AHI will contact herds containing only pre-2013-born animals by SMS to encourage their testing. Reflecting the reduction in both PI births and the number of animals with an unknown status, the number of herds acquiring negative herd status (NHS) has increased. Herds qualify for negative herd status (NHS) by meeting the following requirements: 1. existence of a negative BVD status for every animal currently in the herd (on the basis of either ‘direct’ or ‘indirect’ results); 2. absence of any animal(s) deemed to be persistently infected with BVD virus from the herd in the 12 months preceding the acquisition of NHS By the end of Q2 2018, over 85% of herds had acquired NHS, with a further 11,000 only being ineligible due to the presence of a small number of untested animals. While an important programme milestone for any herd, NHS also brings with it an economic benefit, with the number of laboratories that use the RTPCR test method offering testing at reduced costs to herds with NHS click here .



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