Results showing the estimated economic impact of Johne's disease.
Knowledge and control of Johne's
- Address production (and therefore income) losses that inevitably result from the disease.
- Optimise cull cow price by timely removal from the herd
- Potentially reduce the number of forced culls
- Address the negative animal welfare implications associated with the disease.
- Potentially increase the value of breeding stock for sale
Impact on a suckler herd
Annual cost of Johne's disease in a 100 cow suckler herd - spring calving with an average calf weaning weight of 270 kg.
|Two fewer weaned calves at forecast sale value of £540 (£2/kg). Production costs are assumed to be £54 / head.||2 calves x £486||£3972|
|5 lighter calves at weaning||5 calves x (36kg x £2)||£360|
|5 additional female replacements @ £1000 / head less 3 culls @ £600 / head||(5 x £1000) - (3 x £600)||£3200|
Typical total annual cost for 100 cow suckler herd infected with Johne's disease
Source: Economic Impact of Health and welfare Issues in Beef Cattle and Sheep in England. EBLEX_Final Report_170413
Impact on a dairy herd
A US study found that Johne's infected animals:
- Gave on average 4,000 kg less milk in their lifetime
- Were 5 times more likely to be lame
- Were 2 times more likely to develop mastitis / SCC problems
- Were 1.8 x more likely to develop digestive problems
Source: Villarano M.A. and Jordan E.R. (2005). Production effects of MAP in dairy cows. Proceedings of International Johne's conference.
Testing for Johne's
Identify infected animals in the herd as soon as possible so that management decisions may be taken to prevent the spread of infection.
Accreditation Programme & health schemes
Risk Level Accreditation programme enables herds to maintain or move towards clear herd tests.
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