Anthrax, a bacterial infection, is rare in people but common in farm animals like sheep, cattle and goats.
The other method, more common in farming country, involves anhydrous ammonia, a liquid fertilizer, cooked with pseudoephedrine and lithium, taken from car batteries.
The rabbits' MRSA was also resistant to tetracycline, which Smith says is common in farm animals.
Intensive breeding was the most common system in farms from southern (100%) or eastern (90.2%) areas, whereas only 55.8% or 50% of farms from western or northern areas, respectively, had this type of farming.
However, closer to Addis Ababa, in the centre of Ethiopia, farming is more diverse and exotic breeds - such as Holstein-Frisian - are common in dairy farms.
Marcia I. Endres, a professor in the department of animal science at the University of Minnesota, sees big data becoming more common in dairy farms in the future.
Despite the lack of available reports, this infection is very common in Mexican farms (Gottschalk M, unpublished data, 2014).
Predator encounters are much more common in traditional farming with forest pasturing than in conventional farming.
One important agri-environmental scheme is organic farming, where synthetic fertilisation and pesticide treatments are not applied, while both are common in conventional farming systems.
There is some evidence that pathogens, including E. coli, become much more common in factory farming operations.
