| Popis: |
DAIRY cow behavioral responses to alternating and direct current were examined for three body pathways: mouth-to-all hooves, front-to-rear hooves and body-to-all hooves. For mouth-to-all hooves and front-to-rear hooves pathways, response frequency functions were obtained over a range of 0-5 mAAC and 0-6 mADC. At significant levels of response, a higher DC than AC current was needed to obtain the same response. At a 50% response rate, a 34% higher DC current than AC was needed for the front-to-rear path and 22% higher for mouth-to-all hooves. Front-to-rear hooves response rate became statistically significant above 2.0 mAAC and 1.0 mADC. Mouth-to-all hooves response rate became significant above 2 mAAC and 4 mADC. Response rate for a body-to-all hooves pathway with currents from 0-7.5 mAAC and 0-9 mADC were inconclusive. No reliable response pattern was obtained for this body pathway. |
