How does stray voltage affect animals? Stray voltage does not directly affect cows but
indirectly through avoidance behavior. When cows change their behavior it can affect
their performance. Cows may avoid drinking, eating, letting down their milk or entering
stalls. If cows are nervous in the milking parlor, they may not milk out properly, which
can affect production and health. If cows receive a shock when drinking or eating they
may consume less and affect production. Or, if cows receive a shock when they enter an
area, they may avoid that area making management more difficult.