Time to loss of brain responsiveness following exsanguination in calves.

In the anaesthetised calf the time to loss of visually evoked cortical responsiveness after cutting the common carotid arteries and the jugular veins was 17 seconds. An earlier study showed that the corresponding interval for sheep was 14 seconds. In contrast to suggestions made by other workers, it is concluded that the time necessary for sticking at slaughter to induce brain dysfunction is similar in the two species.