Tunnel ventilation minimizes heat stress

Tunnel ventilation does a better job of reducing heat stress than shade and fans alone, according to research from Mississippi State University. Cows cooled by tunnel ventilation ate about 4 pounds more feed per cow per day and produced nearly 6 pounds more milk per cow per day than cows cooled with shades and fans. The tunnel-ventilated cows also had lower peak body temperatures and slower respiration rates.

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