02-09-2016, 11:06 PM
· is mainly a problem in Gram-negative bacteria: E. coli, Salmonella
· resistant strains can be introduced by one-day old chicks through the hatchery. So resistance is possible in farms where no drugs have been used
· routine preventive treatments increase resistance
· low concentrations (often in preventive treatments) increase resistance
· some drugs easily create resistance: streptomycin
· some drugs create multi-resistance. Multi-resistance is the combined resistance to different groups of drugs (e.g. neomycin)
· in a healthy environment, where no antibiotics/chemotherapeutics are used, the resistance disappears rather rapidly.
· resistant strains can be introduced by one-day old chicks through the hatchery. So resistance is possible in farms where no drugs have been used
· routine preventive treatments increase resistance
· low concentrations (often in preventive treatments) increase resistance
· some drugs easily create resistance: streptomycin
· some drugs create multi-resistance. Multi-resistance is the combined resistance to different groups of drugs (e.g. neomycin)
· in a healthy environment, where no antibiotics/chemotherapeutics are used, the resistance disappears rather rapidly.