Nutritional disorders signs and symptoms and causes prevention and control

Nutritional disorder is when the feed of an animal is not appropriate nutritional .
or
when the nutrient in the food of a livestock is not in appropriate amount.
(signs and symptoms). .
loss of weight, (2)night blindness,
(3). bleeding in the teeth lesion .
(prevention)
(1). adequate feeding of feed with vitamin.
(2). feeding animals with food that contains carbohydrates.