Programme Overview
Joining the Programme The AHWNI JDCP is a voluntary programme. Herd owners can enrol most easily at their first on farm Veterinary Risk Assessment and Management Plan ((VRAMP (see below)). AHWNI has designed an online system to allow authorised veterinary practitioners (AVPs) to carry out the VRAMP on farm using a web portal which is […]
Principles of Control
Measures to control infection focus on two areas; Preventing the introduction of infection onto the farm Limiting the transmission of infection within the farm Infection is usually introduced onto a farm through the purchase of an infected animal or bringing material onto the farm that contains the bacteria that cause infection. Wherever possible, animal movements […]
Diagnosis of Johne’s
In most cases, infection can only be detected using a diagnostic test. The performance of the currently available tests varies as the infection progresses. As animals progress towards clinical disease the performance of all the tests improves. In practical terms this means that one herd screen will be inadequate to identify all infected cattle. Similarly […]
Importance of Johne’s Control
The direct economic impact on farms will vary between farms and depends upon the proportion of cattle infected and the extent to which infection has progressed in infected cattle. Infection can contribute to reduced milk yield and increased susceptibility to other conditions such as infertility even before the more obvious signs of disease appear. Infected […]
What is Johne’s Disease?
Johne’s disease is an infectious bacterial gut disease of cattle and other ruminants. Cattle usually become infected during the early weeks of life following the consumption of milk or food contaminated with the bacteria, which are shed in the dung or milk of infected adult cattle. Infection develops slowly and the signs of disease vary […]
Johne’s Disease
Johne’s disease (JD) in cattle is caused by a bacterial infection. The name of the bacterium is ‘Mycobacterium avium sub-species paratuberculosis’ which is more commonly referred to as ‘Map’. Initially the bacteria live in the gut of infected cattle where they grow and slowly cause damage. Once the disease progresses, the bacteria spread to other […]