Just 200 horn flies start to hurt cattle production. It is not unusual to find 3,000 flies per cow, writes Curt Arens. Fly prevention is one of the basic animal stewardship practices. Horn flies can suck as much as a gallon of blood per month per cow. Face flies feed on proteins from the eyes often becoming vectors for pinkeye. Stable flies are just a plain nuisance. They feed … [Read more...]