An evaluation of the effect of a chlortetracycline granular feed additive (Aureomycin~R) on the occurence of slow growth rates in growing swine

摘要

Variation in growth rates has been identified as a major source of loss in efficiently operating all-in:all-out grow/finish barns. This loss is realized as it is rarely justified to maintain a grow/finish barn with only a fraction of is capacity being used to rear slow growing pigs up to their optimal weight. If the pigs do not reach their optimal weight, losses due to opportunity costs and actual sort loss according to packer grids can be quite large, often reaching