People who buy local farm-raised chicken do so for many reasons. A big reason is that most small farmers raise chickens on antibiotic free feed. There is enough suspicion and caution to be had regarding the constant feeding of antibiotics to broiler chickens as a growth stimulant and not as a disease treatment.
Here is some research that suggests that antibiotic in commercial, mass-produced chicken is responsible for antiobitic-resistant urinary tract infections.
Read more: Research Linking Chicken to Bladder Infections Gets National Attention