Signs of Deficiency/Excess
Anorexia, body weight loss, skin lesions, conjunctivitis, corneal disorders, respira-
tory ailments, increased susceptibility to
Dehydration, Central Nervous System
depression, joint pain.
Rickets, lethargy, loss of muscle tone, bone swelling and bending.
Anorexia, weakness, diarrhea, vomiting, dry and brittle hair, muscle atrophy, dehy- dration.
Degeneration of skeletal muscle, repro-
ductive failure, retinal degeneration.
No reports of naturally occurring deficiencies in dogs.
Failure to grow, weight loss, neurological abnormalities in puppies, damage to the nervous system and heart in adult dogs.
Anorexia, weight loss, muscular weakness
flaking dermatitis, eye lesions.
Anorexia and weight loss in puppies, convulsions, muscle twitching and anemia in adult dogs.
Impairment of motor control and balance, muscle weakness.
Anorexia, weight loss, irritation and inflam-
mation of the lips, cheeks and throat, profuse salivation, bloody diarrhea.
Bloody feces, convulsions.
Erratic food intake, sudden prostration or coma, rapid respiratory and heart rates, convulsions, gastrointestinal symptoms, reduced antibody production.
Appetite loss, lack of white blood cells, anemia, bone marrow changes.
Weight loss, decline in hemoglobin concentration.