File:Experimental-H-type-and-L-type-bovine-spongiform-encephalopathy-in-cattle-observation-of-two-1746-6148-8-22-S1.ogv

English: H-type BSE (H1) H-type BSE-inoculated steer at 17 mpi (prior to cull), 'nervous form'. This steer displays head shyness in the crush (over-reactivity when approached from the front) and tosses its head in response to touching of the head with artery forceps. It displays mildly apprehensive behaviour, characterised by stopping at grooves or avoiding the drain on the floor (note also the mild startle with twitching of the forelimbs after the animal vocalises in the corridor and trots towards the camera). There is mild hind limb hypermetria. It has considerable difficulty in rising, dragging its body along the floor of the pen over a time period of approximately 2 minutes (rising score 2).