Từ điển thú y vần F | Kittens A similar syndrome may be caused by the feline leukaemia virus. Face Flies see under FLIES Facial Deformity see HOLOPROSENCEPHALY Facial Eczema Facial eczema is a synonym used outside the UK for light sensitisation in cattle and sheep. See LIGHT SENSITISATION. Facial Nerve The facial nerve is the 7th of the cranial nerves and supplies the muscles of expression of the face. It is totally a motor nerve. Facial Paralysis In the case of unilateral facial paralysis which very often follows accidents in which the side of the face has been badly bruised. The muscles on one side become paralysed but those on the opposite side are unaffected. This absence of antagonism between the 2 sides results in the upper and lower lips and the muscles around the nostrils becoming drawn over towards the unaffected side and the animal presents an altered facial expression. The ear on the injured side of the head very often hangs loosely and flaps back and forward with every movement of the head and the eyelids on the same side are held half-shut. See also under GUTTURAL POUCH DISEASE LISTERIOSIS. Factory Chimneys Smoke from these may contaminate pastures and cause disease in grazing animals. See FLUOROSIS MOLYBDENUM. Fading Fading is the colloquial name for an illness of puppies leading usually to their death within a few days of birth. Symptoms include progressive weakness which soon makes suckling impossible a falling body temperature and paddling movements. Affected puppies may be killed by their dams. One cause is canine viral hepatitis another is a canine herpesvirus a 3rd may be a blood incompatibility a 4th Bordetella a 5th is hypothermia or chilling in which the puppy s body temperature falls. A possible 6th cause may be Clostridium perfringens infection. Faeces Eating of see COPROPHAGY Fainting Fits Syncope Fainting fits syncope are generally due to cerebral anaemia occurring through weakened pulsation of the heart sudden shock or severe injury. It is most commonly seen
