Antibiotic use in livestock
Antibiotic use in livestock is the use of antibiotics for any purpose in the husbandry of livestock , which includes treatment when ill ( therapeutic ) , treatment of a group of animals when at least one is diagnosed with clinical infection ( metaphylaxis ) , and preventative treatment ( prophylaxis ) . 
<triplet> Antibiotic use in livestock <subj> antibiotics <obj> subclass of <subj> husbandry <obj> use