The results of this fine study should be expected, antibiotics attack bacteria by design, so the fact that cattle dung from antibiotic treated cows disrupts the bacterial growth and population is not unexpected or should not be unexpected, along with an increase in fungal growth and spread.
This is simply another way the "few feed all" misconception of food supply has created a dire situation both for the breakdown of the fecal matter and the cows getting sick with no recourse but to either let the illness run its course or destroy the animals.
Ranchers have to decide, do they want to let their cows live life as nature intended or are they going to insist on continuing the Nature disruptive practice of feed lots.
If we don't at least restructure the current beef market methods, it will come to a time when we have no healthy cattle, at that point, feeding the world from a few countries will cease because the cattle are dying and we can't do anything about it because we have created the ultimate super "bug".
Cow dung is now at the point where if you don't fully
compost it in a fungal setting, the antibacterial compounds will end up persisting in the soil and plant growth and development will slow or cease.
Once again humans have gotten in the way of their own survival by setting up a situation primed for food shortages (famine) to occur and from the past we can determine that when it comes along, wars will break out, with food being the objective of the invaders.
Redhawk