Final answer:
After parturition, a cow may experience obturator paralysis, which is caused by pressure on the obturator nerves during birth, leading to difficulties with hind leg movement.
Step-by-step explanation:
After parturition, a cow may become partially or totally paralyzed with obturator paralysis. This type of paralysis can occur when there is damage or pressure to the obturator nerves during the birthing process. This nerve can be compressed by the calf's head or body while passing through the birth canal, leading to an inability to control the hind legs properly. The cow may exhibit signs of difficulty standing, spreading of the rear limbs, or dragging the toes. Treatment usually involves providing good footing, assistance in standing, and may include the use of anti-inflammatory medication as prescribed by a veterinarian.